Re: Microsoft's Dynamic Languages Runtime (DLR)

[Stefan Scholl]

In comp.lang.lisp sturlamolden <[EMAIL PROTECTED]> wrote:
> I am curious to know how it performs in comparison to CPython and an
> efficient compiled Lisp like CMUCL. Speed is a major problem with

You are not allowed to publish .NET benchmarks. :-)


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Re: Microsoft's Dynamic Languages Runtime (DLR)

[Edi Weitz]

On Thu, 3 May 2007 09:20:22 +0200, Stefan Scholl <[EMAIL PROTECTED]> wrote:

> You are not allowed to publish .NET benchmarks. :-)

I'm pretty sure that only applied to their beta releases.

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Re: pack/unpack zero terminated string

[tmp123]

On May 2, 11:13 pm, John Machin <[EMAIL PROTECTED]> wrote:
> On May 3, 12:01 am, Laurent Pointal <[EMAIL PROTECTED]> wrote:
>
>
>
>
>
>
>
> >tmp123a écrit :
>
> > > Hello,
>
> > > Thanks for your time.
>
> > > After review the "struct" documentation, it seems there are no option
> > > to pack/unpack zero terminated strings.
>
> > > By example, if the packed data contains: byte + zero terminated string
> > > + zero terminated string + byte, it seems no possible to unpack it
> > > using "struct".
>
> > > Please, has someone any hint or pointer to another librarian to be
> > > used?
>
> > May look at xstruct too
>
> >http://www.sis.nl/python/xstruct/xstruct.shtml
>
> Hi, Laurent,
>
> It's a reasonable presumption that the OP needs to unpack *variable-
> length* zero-terminated strings, otherwise why is he asking? This
> would need a new format type e.g. "z".
>
> xstruct doesn't appear to offer variable-length strings, and is frozen
> in time (October 1999) -- inspection of the source shows that it is a
> copy of Python 1.5.2 structmodule.c with added stuff.
>
> The OP might like to try a bit of DIY in Python, along the following
> lines:
>
> C:\junk>type unpackz.py
> def getz(strg, start=0):
> zpos = strg.index('\0', start)
> return strg[start:zpos], zpos + 1
>
> def getB(strg, start=0):
> return ord(strg[start]), start + 1
>
> def unpack_BzzB(strg):
> pos = 0
> r0, pos = getB(strg, pos)
> r1, pos = getz(strg, pos)
> r2, pos = getz(strg, pos)
> r3, pos = getB(strg, pos)
> assert pos == len(strg)
> return r0, r1, r2, r3
>
> x = chr(42) + 'foo\0' + 'mumble\0' + '\xff'
> print unpack_BzzB(x)
> print unpack_BzzB('\0' * 4)
>
> C:\junk>unpackz.py
> (42, 'foo', 'mumble', 255)
> (0, '', '', 0)
>
> HTH,
> John

Hello John,

Totally true, the solution you propose is the one I'm using now. The
subject was, before to start from scratch, try to reuse something
existing.

Another possibility was to modify the "struct" package with the new
option, but it seems a mixed C-Python implementation, and I do not
like to start having compatibility problems in the C elements.

Kind regards.

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Re: test

[per9000]

On 2 Maj, 05:19, "Robert Rawlins - Think Blue"
<[EMAIL PROTECTED]> wrote:
[...]

I like comp.lang.python - it is a friendly place. See this post on the
C-list and compare:
http://groups.google.se/group/comp.lang.c/browse_thread/thread/0a4e2e194a6da45b

[:)]-|--<

/Per


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Tomlab Optimization Inc.
http://tomopt.com/tomnet/


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Re: FInd files with .so extension

[mailme . gurpreet]

On May 3, 9:58 am, pradeep nair <[EMAIL PROTECTED]> wrote:
> HI,
>
>  How do i find files with .so extension using python .

Hi pradeep


This piece of code should help you


import os,re

def findfile(filepattern, base = '.'):
regex = re.compile(filepattern)
matches = []
for root,dirs,files in os.walk(base):
for f in files:
  if regex.match(f):
 matches.append(root + '/' + f)
return matches


HAPPY CODING

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Searching for a piece of string

[saif . shakeel]

Hi,
How can i match a part of string and branch to some part of code.
Ex If there is a string like "Timeout" and i want to search only
whether the word "Time" is present in it(which is valid in this
case).so if i have "CastinTime",still this should hold.
   I need to use this in a "if" statement and code.Can someone help me
in this.
   Thanks .

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Re: Searching for a piece of string

[Ant]

On May 3, 8:35 am, [EMAIL PROTECTED] wrote:
> Hi,
> How can i match a part of string and branch to some part of code.
> Ex If there is a string like "Timeout" and i want to search only
> whether the word "Time" is present in it(which is valid in this
> case).so if i have "CastinTime",still this should hold.
>I need to use this in a "if" statement and code.Can someone help me
> in this.
>Thanks .

if "Time" in text:
 # do stuff.

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Re: Searching for a piece of string

[rishi pathak]

s="CastinTime"
if s.find("Time") != -1:
   print "found"
else:
   print "not found"

On 3 May 2007 00:35:57 -0700, [EMAIL PROTECTED] <[EMAIL PROTECTED]>
wrote:


Hi,
How can i match a part of string and branch to some part of code.
Ex If there is a string like "Timeout" and i want to search only
whether the word "Time" is present in it(which is valid in this
case).so if i have "CastinTime",still this should hold.
   I need to use this in a "if" statement and code.Can someone help me
in this.
   Thanks .

--
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--
Regards--
Rishi Pathak
National PARAM Supercomputing Facility
Center for Development of Advanced Computing(C-DAC)
Pune University Campus,Ganesh Khind Road
Pune-Maharastra
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passing an array of variant in vb to a python COM object = win32com bug ?

[vml]

I have a python com object which contains a method to inverse an array
in vb 6 the definition of the class is :

class Fop:
_public_methods_ = [ 'SqVal' ]
def SqVal(self,*val):
#vol=(val[0][0],val[0][1])
#mat1=mat((vol))
#up=linalg.inv(mat1)
return str(val)#up
_reg_verprogid_ = "Python.Fop.3"
_reg_progid_ = "Python.Fop"
_reg_desc_ = "Python Fop"
_reg_clsid_ = "{30BD3490-2632-11cf-AD5B-524153480001}"

I pass to this method an array of variant which is the matrix to
invert like that:
vb6 code :


   Set obj = CreateObject("Python.Fop")
Dim ty(1, 1) As Variant

ty(0, 0) = 1
ty(1, 0) = 2
ty(0, 1) = 3
ty(1, 1) = 4

toto = obj.SqVal(ty)


when I dispaly toto as str(val) I obtain the following tuple "(((1,
3), (2, 4)),)" which is not usable 

Do you have an idea to explain this strange behaviour ?

thank you !

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Re: python,win32com,scipy and vb 6 : no module named scipy

[vml]

On 3 mai, 03:30, "Terry Reedy" <[EMAIL PROTECTED]> wrote:
> scipy is a 3rd party package which I believe you get from the same place,
> more or less, as numpy.

the bug was between the chair and the keyboard;)


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Re: Responding to Trolls [was Re: ignorance and intolerance in computing communties]

[Michele Dondi]

On Thu, 03 May 2007 14:54:21 +1000, Steven D'Aprano
<[EMAIL PROTECTED]> wrote:

>Subject: Responding to Trolls [was Re: ignorance and intolerance in computing 
>communties]

Nope. No way.


Michele
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Re: Video: Professor of Physics, Phd at Cal Tech says: 911 Inside Job

[SuperM]

On 2 May 2007 22:26:07 -0700, [EMAIL PROTECTED] Gave us:

>>
>> >http://www.911blogger.com/node/8101
>>
 What a lard ass...  no wonder the Navy got rid of him.

 And he isn't from cal tech, he "teaches" in Iowa.

  Also, being a physicist, does NOT make him, in any way shape or form,
a structural engineer.

 The guy is an idiot.
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Re: how to use Dispatch to open an application in win32com.client

[Peter Fischer]

Hello Tim,

Thank you for your answer. I just tried, but it didn't work. The reason seems to
be that Google Earth prevents a second instance to run on the same machine.
Maybe for licensing reasons (do you know whether it is legal to bypass this
and how to do this?). So that is no python/COM problem. However, now I will try
to run the two instances on separate machines and to synchronize them via
network. Do you know how to start a second instance on a second machine over the
network in python/COM (DCOM)? Is this possible directly with the win32com
package in python or do I have to install an additional package?

You would greatly help me with an answer,

best regards,

Peter.



Tim Golden <[EMAIL PROTECTED]> wrote:Suspect you want 
win32com.client.DispatchEx which, among
other things, starts a separate instance of the app. (Or
whatever they call the things in COMspeak).

GE_n = win32com.client.DispatchEx ("GoogleEarth.ApplicationGE")

TJG
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Re: Microsoft's Dynamic Languages Runtime (DLR)

[Duncan Booth]

Pascal Costanza <[EMAIL PROTECTED]> wrote:

> That still doesn't explain what DLR actually does. You can implement 
> these languages on top of the JVM as well. You could implement them on 
> any Turing-complete language, for that matter. The interesting question 
> how well integrated such an implementation is.
> 
> However, Jim Hugunin seems to be willing to give more details on his 
> blog - the recent entry gives hints that there is indeed something 
> interesting going on. I'm still waiting for the meat, though...

Watch the video he linked from his blog.

In short, the implementation looks really well integrated. They start with 
an example (in Ruby) which creates a C# control and handles the event it 
generates to call some VB which retrieves a list of strings from the server 
and then passes it to a 3d animation written in JScript. All seamless, and 
all running in the local browser (which in the demo is Safari).

The significant part of the DLR is (I think) that you can have a single 
object e.g. a string, but the methods available on that object vary 
according to the source file from which you are accessing the object. That 
means in pure Python code the string has python methods, but in Python 
using the CLR it gains the CLR methods. Presumably in Ruby code it looks 
like a Ruby string and so on, but (and this is what's new) it is the same 
object, not a bunch of language specific wrappers around the string type.

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Re: Slicing Arrays in this way

[Michael Hoffman]

John Machin wrote:
> On May 3, 10:21 am, Michael Hoffman <[EMAIL PROTECTED]> wrote:
>> Tobiah wrote:
>>
>>>  >>> elegant_solution([1,2,3,4,5,6,7,8,9,10])
>>> [[1, 2], [3, 4], [5, 6], [7, 8], [9, 10]]
>> That's not an array, it's a list. See the array module for arrays
>> (fixed-length, unlike variable-length lists).
> 
> You must have your very own definitions of "fixed-length" and
> "unlike".

Sorry, too much time spent with numarray arrays which are documented to 
have immutable size.
-- 
Michael Hoffman
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Re: Lazy evaluation: overloading the assignment operator?

[Antoon Pardon]

On 2007-05-03, Terry Reedy <[EMAIL PROTECTED]> wrote:
>
> "sturlamolden" <[EMAIL PROTECTED]> wrote in message 
> news:[EMAIL PROTECTED]
>|
>| Python allows the binding behaviour to be defined for descriptors,
>| using the __set__ and __get__ methods. I think it would be a major
>| advantage if this could be generalized to any object, by allowing the
>| assignment operator (=) to be overloaded.
>
> Conceptually, assignment is *not* an operator.  Binary operators take two 
> values (of the same type) and produce a third (usually of either the input 
> type or a boolean) that usually depends on both inputs.  Assignment does 
> nothing of the sort.
>
> In Python, the equal sign is *not* an operator: it is a grammatical symbol. 
> One use of the operator fiction in C is to enable simple chained 
> assignment: a=b=2.  Python does this directly without the fiction.  C's 
> store-and-test usage can be implemented in Python with a 'purse' class.
>
>| One particular use for this would be to implement "lazy evaluation".
>
> Since (in Python, at least) operands are evaluated *before* the 
> operator/function is called, I do not see how.

But they could evaluate to an expression tree instead of the actual
result. This tree could then be evaluate at the moment of assignment.

This is an idea I have been playing with myself in an other context.
You have a class of symbolic names. e.g. First, Last ... You can use
the normal operators to these names, the result will be an expression
tree. So Last - 2 will evaluate to something like

sub
   /   \
Last2

I want to use this in the context of a table (a list like structure
but with arbitrary start index, which can be negative, so tab[-1]
can't refer to the last element).

So I can use this as follows:

   el = tab[Last - 2]

to access the element two places before the last, because the evaluation
of the tree happens in the __getitem__ method.

I could even write something like:

   el = tab[(First + Last) / 2]

To get at the midle element.

-- 
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Re: Refreshing imported modules

[sykora]

On May 2, 7:24 pm, [EMAIL PROTECTED] wrote:
> I have the python interperter opened while editing a module. The
> problem is that when I make changes, the module is not refreshed
> whenever I import it again. I have to re-launch the interpreter, is
> there a way to shortcut this?

I believe you can use the 'reload' command. ie

First import your module :
>>> import module_name


If you want to refresh the module after having changed it,
>>> module_name = reload(module_name)

That should work. However, any variables you have declared which arise
from classes within your module must be redeclared.

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Re: how to use Dispatch to open an application in win32com.client

[Tim Golden]

Peter Fischer wrote:
> Thank you for your answer. I just tried, but it didn't work. The reason seems 
> to
> be that Google Earth prevents a second instance to run on the same machine.
> Maybe for licensing reasons (do you know whether it is legal to bypass this
> and how to do this?). 

Don't know, but common sense tells me it's not a good idea!

> However, now I will try to run the two instances on separate machines 
 > and to synchronize them via network. Do you know how to 
start a second
instance  on a second machine over the network in python/COM 
(DCOM)?
Is this possible directly with the win32com
> package in python or do I have to install an additional package?

Well, funnily enough, you use exactly the same call, but
with a machine name on the end:


import win32com.client

xl = win32com.client.DispatchEx (
   "Excel.Application",
   "other_machine"
)



The trouble now is that, to use COM/DCOM effectively,
you really need to know what to do, not just be a
dabbler like me. On a recent thread, Alex Martelli
recommended Don Box's "Essential COM" which I've
noted down but haven't read:

http://groups.google.com/group/comp.lang.python/msg/f95a2d51b6e84091?hl=en&;

That said, this is Python so even without using DCOM
directly, you have a whole slew of across-the-network
possibilities for interacting between apps on two
machines. Just ask this list and sit back and wait
for the variety of replies!

TJG
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problem with meteo datas

[[EMAIL PROTECTED]]

Messaggio originale
Da: [EMAIL PROTECTED]
Data: 3-mag-2007 
10.02
A: 
Ogg: problem with meteo datas

Hello,
I'm Peter and I'm new in python codying and I'm using parsying 
to 
extract data from one meteo Arpege file.
This file is long file and 
it's composed by word and number arguments like this:

GRILLE EURAT5 
Coin Nord-Ouest : 46.50/ 0.50  Coin Sud-Est : 44.50/ 2.50
MODELE PA 
PARAMETRE P 
 NIVEAU MER 0 ECHEANCE 0.0 DATE 2002030400 NB_POINTS 
25 
   1020.911020.871020.911021.05 1021.13 
   
1020.071020.271020.491020.91 1021.15 
   1019.37
1019.651019.791020.53 1020.77 
   1018.731018.89
1019.191019.83 1020.81 
   1018.051018.191018.75
1019.55 1020.27 
 NIVEAU MER 0 ECHEANCE 3.0 DATE 2002030400 
NB_POINTS 25 
   1019.801019.781019.921020.18 1020.34 
   1018.941019.241019.541020.08 1020.32 
   1018.24
1018.641018.941019.84 1019.98 
   1017.481017.88
1018.281018.98 1019.98 
   1016.621017.081017.66
1018.26 1018.34 
NIVEAU MER 0 ECHEANCE 6.0 DATE 2002030400 
NB_POINTS 25 
   1019.371019.391019.57   

...  .
...
...

...
... . 
NIVEAU MER 0 ECHEANCE 48.0 DATE 
2002030400 NB_POINTS 25 
   1017.841017.461017.14
1016.86 1016.58 
   1017.281016.901016.461016.48 
1016.34 
   1016.501016.061015.621015.90 1015.72 
   
1015.941015.301014.781014.68 1014.86 
   1015.86
1015.101014.361014.00 1013.90

.
MODELE PA PARAMETRE T 
 NIVEAU HAUTEUR 2 
ECHEANCE 0.0 DATE 2002030400 NB_POINTS 25 
  1.34   
1.51   1.40   0.56   -0.36 
  1.73   1.43   
0.89  -0.16   -0.99 
  2.06   1.39   1.14  
-0.53   -0.99 
  2.12   2.22   2.15   0.76   
-1.16 
  1.67   1.45   1.40   1.260.28 
 
NIVEAU 
HAUTEUR 2 ECHEANCE 3.0 DATE 2002030400 NB_POINTS 25 
  
0.94   1.16   1.03   0.44   -0.41 
  0.95   
0.61   0.22 .

I'am at 
the begginning of computation and for the moment I write this code to 
extract only number data in form of a string:

from pyparsing import *
dec = Combine (Optional( "-" ) + delimitedList( Word( nums ), ".", 
combine=True ))
datas = ZeroOrMore( dec )
f=file("arqal-Arpege.00", 
"r")
g=file("out3", "w")
for line in f:
try:
result = 
datas.
parseString (line) 
add = result
add1 =  ";".join
(add)
print >> g,"(",add1,")"
except ParseException, pe:

print pe

This is the output result in file g=file("out3", 
"w")  

(  )
(  )
(  )
( 1020.91;1020.87;1020.91;1021.05;1021.13 )
( 
1020.07;1020.27;
1020.49;1020.91;1021.15 )
( 1019.37;1019.65;1019.79;
1020.53;1020.77 )
( 
1018.73;1018.89;1019.19;1019.83;1020.81 )
( 
1018.05;1018.19;1018.75;
1019.55;1020.27 )
(  )
( 1019.80;1019.78;
1019.92;1020.18;1020.34 )
( 
1018.94;1019.24;1019.54;1020.08;1020.32 )
( 1018.24;1018.64;1018.94;
1019.84;1019.98 )
( 1017.48;1017.88;1018.28;
1018.98;1019.98 )
( 1016.62;
1017.08;1017.66;1018.26;1018.34 )
(  )
( 
1019.37;1019.39;1019.57;
1019.9;..;



  .;
1016.87)
(  )
( 1017.84;
1017.46;1017.14;1016.86;1016.58 )
( 1017.28;
1016.90;1016.46;1016.48;
1016.34 )
( 1016.50;1016.06;1015.62;1015.90;
1015.72 )
( 1015.94;1015.30;
1014.78;1014.68;1014.86 )
( 1015.86;
1015.10;1014.36;1014.00;1013.90 )

So I don't have any word but the 
problem is that Now I have to put in 
order this numerical datas in a 
type of NESTED matrix emulated by 
python like a nested dictionary :

{  'P ' : { MER 0 : [ (1020.91;
1020.87;;1020.27 ) ; 
(.) ; ( 1019.80;1019.78;;
1018.26;1018.34 ) ]; ..; 
SOL 0 : [ ( ...);.;( ) ] } 
; 'T' : { SOL 0 : 
[(.;..) ; (ECHEANCE 3.0) ; (ECHEANCE 6.0) ; 
(...;) 
];  HAUTEUR 2 :  [(...;..;..) ] } } 
==>>  
{  
'Parameter X' : { Level X : [ (predict step 3 hours 
from +0 to +48 
hours ) ;]} }

>> the bigger shell is fixed by 
Dictionary 
PARAMETER in the example is P= 'Pressure' but thre are many 
of this 
Temperature = T , Wind = U and V ecc... the second nested  
shell is 
setted by another Dictionary NIVEAU MER 0 in the example is 
MER 0 = 
sea level or SOL 0, but can be HAUTER 2,10 (HEIGHT 2,10 METERS)
ecc. (soil level , 1;0 meter from soil) ecc (from French language) 
and after  every Level is associated with a LIST OF TUPLE: [();
();()]  to rappresented every step hours of prediction or 
expiration hours in French language:  ECHEANCE XX.X = predicted hour 
+3.
0 +6.0 until 48H is setted of a list of tuple [(ECHEANCE 3.0);
(ECHEANCE 

assigning to __class__ for an extension type: Is it still possible?

[gregory . lielens]

Hello,

We are currently writing python bindings to an existing C++ library,
and we encountered
a problem that some of you may have solved (or that has found
unsolvable :( ):

A C++ class (let's call it CClass) is binded using classical Python
extension API to _PClass, which is accesible through python without
any
problem. The problem is that I want this class to be extended/
extensible
in python, and expose the python-extended version (PClass) to library
users (_PClass should never be used directly nor be retruned by any
function).
The aim is to leave only performance critical methods in C++ so that
the
binding work is minimal, and develop the other methods in python so
that
  they are easier to maintain/extend.

We thus have something like this

class PClass(_PClass):
   def overide_method(self,...):
 ...
   def new_method(self,...):
 ...

and I can define
a=PClass()
and use my new or overiden method
a.overide_method() a.new_method() as intended...

So far, so good, trouble begin when I have a method from another
class
PClass2 derived from _PClass2 which bind the C++ class CClass2, that
should return objects of type PClass:

Let call this method troublesome_method:

b=_PClass2()
c=b.troublesome_method()
type(c) gives _PClass.

Now I want to define a python class PClass2 for extending methods of
_PClass2 like I have done for _PClass, in particular I want that
PClass2
troublesome_method return objects of type PClass instead of _PClass...

To this end I try something like this

class PClass2(_PClass2):
 ...
 def troubelsome_method(self):
base=_PClass2.troublesome_method(self)
base.__class__=PClass

and I have python complaining about TypeError: __class__ assignment:
only for heap types...

We have then added the Py_TPFLAGS_HEAPTYPE tp_flag, which turn _PClass
into a heap
class and should make this class assignment possible...or so I though:
When the _PClass is turned into a heaptype, assignent to
__class__trigger a test in
python's typeobject.c on tp_dealloc/tp_free witch raise an exception
TypeError: __class__ assignment: '_PClass' deallocator differs from
'PClass'
I have commented out this test, just to check what happen, and just
got an error later on
 TypeError: __class__ assignment: '_PClass' object layout differs from
'PClass'

It seems thus that this approach is not possible, but problem is that
delegation ( embedding a _PClass instance in
PClass (lets say as _base attribute) and automatically forwarding all
methods calls/setattr/getattr to ._base) is far from ideal...
Indeed, we would have to change all other methods that accepted
_PClass, to give them PClass._base, this means wrapping a large
number of methods (from our c++ bindings) for argument-processing...

This is particularly frustrating cause I also have the impression
that
want we want to do was at one time possible in python, let say in
2002-2003, when __class__ was already assignable but before various
safety checks were implemented (assignmenent only for heaptypes, check
on tp_free/tp_dealloc, layout check,...)

Any hint on this problem?
In particular, a list of condition type A and B have to fullfull so
that a=A(); a.__class__=B is possible would be very nice, especially
when A is an extension type (I think the correct term is static type)
while B is defined by a class statement (dynamic type)...This is
something that is not easy to find in the docs, and seems to have
changed quite a lot between revisions 2.2/2.3/2.4/2.5...

Thanks,

Greg.

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32 OS on 64-bit machine

[SamG]

If anyone has a x86_64 machine and is running a 32bit OS on top of
that could you tell me what output would you get for the following
program

#==
import platform
print platform.processor()
print platform.architecture()
#==

Thanks in advance
: )~

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Using Bessel Functions

[amit soni]

Hi,

I want to use Bessel functions in Python. I found on internet that package
Scipy has a function jn(x), but I'm not able to use it. I am importing scipy
and numpy for using it. But i'm getting an error "NameError: name 'j1' is
not defined". Can anyone tell me what is the exact syntax for to use it.

Thank you,
Amit
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Re: Lazy evaluation: overloading the assignment operator?

[sturlamolden]

On May 3, 6:22 am, Charles Sanders <[EMAIL PROTECTED]>
wrote:

> y = a*b+c*d   # Returns a proxy object
>
> x = y[4]  # Computes x = a[4]*b[4] + c[4]*d[4]
>
> v = y.eval()  # Evaluates all elements, returning Xarray
>
> z = ((a+b)*(c+d)).eval()  # Also evaluates all elements

When I suggested this on the NumPy mailing list, I too suggested using
the indexing operator to trigger the computations. But I am worried
that if an expression like

y = a*b+c*d

returns a proxy, it is somehow possible to mess things up by creating
cyclically dependent proxies. I may be wrong about this, in which case
__getitem__ et al. will do the job.


> Whether it would be any faster is doubtful, but it would eliminate
> the temporaries.

The Numexpr compiler in SciPy suggests that it can. It parses an
expression like 'y = a*b+c*d' and evaluates it. Numexpr  is only a
slow prototype written in pure Python, but still it can sometimes give
dramatical speed-ups. Here we do not even need all the machinery of
Numexpr, as Python creates the parse tree on the fly.

Inefficiency of binary operators that return temporary arrays is
mainly an issue when the arrays in the expression is too large to fit
in cache. RAM access can be very expensive, but cache access is
usually quite cheap. One also avoids unnecessary allocation and
deallocation of buffers to hold temporary arrays. Again, it is mainly
an issue when arrays are large, as malloc and free can be rather
efficient for small objects.






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Re: Why are functions atomic?

[Duncan Booth]

[EMAIL PROTECTED] (Alex Martelli) wrote:

>> Is there a reason for using the closure here?  Using function
>> defaults seems to give better performance:
> 
> What measurements show you that...?
> 
...
> 
> brain:~ alex$ python -mtimeit -s'import powi; p=powi.powerfactory1(3)'
> 'p(27)'
> 100 loops, best of 3: 0.485 usec per loop
> 
> brain:~ alex$ python -mtimeit -s'import powi; p=powi.powerfactory2(3)'
> 'p(27)'
> 100 loops, best of 3: 0.482 usec per loop

Your own benchmark seems to support Michael's assertion although the 
difference in performance is so slight that it is unlikely ever to 
outweigh the loss in readability.

Modifying powi.py to reduce the weight of the function call overhead and 
the exponent operation indicates that using default arguments is faster, 
but you have to push it to quite an extreme case before it becomes 
significant:

def powerfactory1(exponent, plus):
   def inner(x):
   for i in range(1000):
   res = x+exponent+plus
   return res
   return inner

def powerfactory2(exponent, plus):
   def inner(x, exponent=exponent, plus=plus):
   for i in range(1000):
   res = x+exponent+plus
   return res
   return inner

C:\Temp>\python25\python -mtimeit -s "import powi; p=powi.powerfactory1
(3,999)" "p(27)"
1 loops, best of 3: 159 usec per loop

C:\Temp>\python25\python -mtimeit -s "import powi; p=powi.powerfactory2
(3,999)" "p(27)"
1 loops, best of 3: 129 usec per loop
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Re: 32 OS on 64-bit machine

[Harald Karner]

SamG wrote:
> If anyone has a x86_64 machine and is running a 32bit OS on top of
> that could you tell me what output would you get for the following
> program
> 
> #==
> import platform
> print platform.processor()
> print platform.architecture()
> #==
> 
> Thanks in advance
> : )~
> 
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\>python
Python 2.5 (r25:51908, Sep 19 2006, 09:52:17) [MSC v.1310 32 bit 
(Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
 >>> import platform
 >>> print platform.processor ()

 >>> print platform.architecture ()
('32bit', 'WindowsPE')
 >>>
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Re: Using Bessel Functions

[Dave]

amit soni  gmail.com> writes:

> Can anyone tell me what is the exact syntax for to use it.
> Thank you,Amit
> 

For example evaluating j1 @ 0

from scipy import special

print special.j1(0)

HTH,
Dave



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Re: 32 OS on 64-bit machine

[SamG]

On May 3, 2:58 pm, Harald Karner <[EMAIL PROTECTED]> wrote:
> SamG wrote:
> > If anyone has a x86_64 machine and is running a 32bit OS on top of
> > that could you tell me what output would you get for the following
> > program
>
> > #==
> > import platform
> > print platform.processor()
> > print platform.architecture()
> > #==
>
> > Thanks in advance
> > : )~
>
> Microsoft Windows XP [Version 5.1.2600]
> (C) Copyright 1985-2001 Microsoft Corp.
>
> C:\>python
> Python 2.5 (r25:51908, Sep 19 2006, 09:52:17) [MSC v.1310 32 bit
> (Intel)] on win32
> Type "help", "copyright", "credits" or "license" for more information.
>  >>> import platform
>  >>> print platform.processor ()
>
>  >>> print platform.architecture ()
> ('32bit', 'WindowsPE')
>  >>>

Thanks, I would be more interested in the output on Linux's or Unix

Thanks again : )~

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Re: 32 OS on 64-bit machine

[king kikapu]

I have at home an AMD Turion 64 and using Ubuntu. You may be
interested on this, i will post here the results when i get back home!

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Re: ignorance and intolerance in computing communties

[fireblade]

> As i have indicated in my post, it is non-trivial to implement a
> function that returns the positive angle of a vector. For example, it
> can be done with sign checking of the coordinate components (in total
> 4 cases, which can be done as 2 levels of nesting if, or simply 4
> if.), and or the evaluation of Min[Abs[ArcCos[x],Abs[ArcSin[x]]], or
> use clever ways with dot product, or ArcTan. It is not a trivial to
> know which algorithm is in general more efficient. (this is important,
> since finding the angle of a vector is a basic function, that may
> needs to be called millions times directly or indirectly) Further,
> consider the inverse trig function, it is likely 99.99% of people with
> a PH D in math wouldn't know how these are actually implemented. So,
> the question of whether calling one of the inverse trig function is
> more robust or efficient than another is a open question. And, besides
> the algorithmic level, the question also entails how the language
> actually implement the inverse trig functions.
>
> Besides efficiency concerns, there's also robustness concerns. For
> example, if the 2 vectors are {1,0} and {0,1}, a simplistic
> implementation will result in division by 0 or similar errors.
> Checking whether one of them lies on the x or y axis means more if
> statements, as well the non-trivial problem of determining if two
> numbers are equal. (e.g. is 0.01 considered equal to 0.0001 )
>
>
>   Xah
>   [EMAIL PROTECTED]
> ∑http://xahlee.org/

Xah could you please post staff related to lisp programming like above
in separate thread from your personal things like someone banning you
from the IRC.

thanks
bobi

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Re: 32 OS on 64-bit machine

[Mattia Gentilini (CNAF)]

SamG ha scritto:
> If anyone has a x86_64 machine and is running a 32bit OS on top of
> that could you tell me what output would you get for the following
> program
I have a Athlon64 X2 with Debian unstable i386:
[EMAIL PROTECTED] pts/0 ~]$ python
Python 2.4.4 (#2, Apr 26 2007, 00:02:45)
[GCC 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
 >>> import platform
 >>> print platform.processor()

 >>> print platform.architecture()
('32bit', '')
 >>>

I also have a MacBook with a Core 2 Duo and Mac OS X 10.4.9 :

[EMAIL PROTECTED] ttyp4 ~/Desktop/ETICS]$ python
Python 2.3.5 (#1, Aug 19 2006, 21:31:42)
[GCC 4.0.1 (Apple Computer, Inc. build 5363)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
 >>> import platform
 >>> print platform.processor()
i386
 >>> print platform.architecture()
('32bit', '')
 >>>

-- 
Mattia Gentilini
Collaborator for ETICS project - http://eu-etics.org/
INFN - CNAF - R&D Division - Bologna, Italy
* Using Mac OS X 10.4.9 powered by Cerebros (Core 2 Duo) *
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Re: How to check if a string is empty in python?

[Dustan]

On May 2, 5:50 pm, Steven D'Aprano
<[EMAIL PROTECTED]> wrote:
> On Wed, 02 May 2007 13:35:47 -0700, noagbodjivictor wrote:
> > How to check if a string is empty in python?
> > if(s == "") ??
>
> In no particular order, all of these methods will work:
>
> # test s is equal to another empty string
> if s == "":
>
> # assuming s is a string, test that it is empty
> if not s:
>
> # test s is a string and it is empty
> if isinstance(s, str) and not s:
>
> # test s has length 0
> if len(s) == 0:
>
> # test the length of s evaluates as false
> if not len(s):
>
> # a long way to test the length of s
> if s.__len__() < 1:
>
> # a stupid way to test s is empty
> if bool(s) == False:
>
> # a REALLY stupid way to test s is empty
> if (bool(s) == False) == True:
>
> # test that appending s to itself is itself
> if s+s == s:

Being the slow person that I am, it really did take me this long to
find a mistake.
s+s != 'appending'
s+s == 'concatenation'

> # test that s has none of any character
> if not filter(None, [1 + s.find(chr(n)) for n in range(256)]):
>
> That last one is really only good for wasting CPU cycles.
>
> --
> Steven.


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Re: ascii to unicode line endings

[fidtz]

On 2 May, 17:29, Jean-Paul Calderone <[EMAIL PROTECTED]> wrote:
> On 2 May 2007 09:19:25 -0700, [EMAIL PROTECTED] wrote:
>
>
>
> >The code:
>
> >import codecs
>
> >udlASCII = file("c:\\temp\\CSVDB.udl",'r')
> >udlUNI = codecs.open("c:\\temp\\CSVDB2.udl",'w',"utf_16")
>
> >udlUNI.write(udlASCII.read())
>
> >udlUNI.close()
> >udlASCII.close()
>
> >This doesn't seem to generate the correct line endings. Instead of
> >converting 0x0D/0x0A to 0x0D/0x00/0x0A/0x00, it leaves it as  0x0D/
> >0x0A
>
> >I have tried various 2 byte unicode encoding but it doesn't seem to
> >make a difference. I have also tried modifying the code to read and
> >convert a line at a time, but that didn't make any difference either.
>
> >I have tried to understand the unicode docs but nothing seems to
> >indicate why an seemingly incorrect conversion is being done.
> >Obviously I am missing something blindingly obvious here, any help
> >much appreciated.
>
> Consider this simple example:
>
>   >>> import codecs
>   >>> f = codecs.open('test-newlines-file', 'w', 'utf16')
>   >>> f.write('\r\n')
>   >>> f.close()
>   >>> f = file('test-newlines-file')
>   >>> f.read()
>   '\xff\xfe\r\x00\n\x00'
>   >>>
>
> And how it differs from your example.  Are you sure you're examining
> the resulting output properly?
>
> By the way, "\r\0\n\0" isn't a "unicode line ending", it's just the UTF-16
> encoding of "\r\n".
>
> Jean-Paul

I am not sure what you are driving at here, since I started with an
ascii file, whereas you just write a unicode file to start with. I
guess the direct question is "is there a simple way to convert my
ascii file to a utf16 file?". I thought either string.encode() or
writing to a utf16 file would do the trick but it probably isn't that
simple!

I used a binary file editor I have used a great deal for all sorts of
things to get the hex values.

Dom

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Re: win32com.client Excel Color Porblem

[Ray]

Thanks a lot!!


ici wrote:
> My Excel Template :) + Rows
> 
> # -*- encoding:utf-8 -*-
> import win32com.client
> 
> try: import psyco; psyco.full()
> except ImportError: pass
> 
> try:
> app = win32com.client.Dispatch("Excel.Application.11") # Excel
> 2003
> except com_error:
> try:
> app = win32com.client.Dispatch("Excel.Application.10") # Excel
> XP
> except com_error:
> try:
> app = win32com.client.Dispatch("Excel.Application.9") #
> Excel 2000
> except com_error:
> try:
> app = win32com.client.Dispatch("Excel.Application.8")
> # Excel 97
> except com_error:
> app = win32com.client.Dispatch("Excel.Application") #
> Excel 5.0?
> # Or raise "No Office ..."
> 
> app.Visible = True
> wbk = app.Workbooks.Add()
> app.DisplayAlerts = False
> while wbk.Worksheets.Count > 1:
> wbk.Worksheets[0].Delete()
> wbk.Worksheets[0].Name = "SHIT"
> sht = wbk.Worksheets[0] # Containers starts with 0!
> sht.Name += "$"
> 
> # Rows
> rng = sht.Rows(7)
> rng.Interior.ColorIndex = 6
> sht.Rows(8).Interior.ColorIndex = 8
> # Rows End
> 
> app.DisplayAlerts = True
> wbk.SaveAs(r"c:\temp\test.xls")
> app.Quit()
> 
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Re: assigning to __class__ for an extension type: Is it still possible?

[gregory . lielens]

> We have then added the Py_TPFLAGS_HEAPTYPE tp_flag, which turn _PClass
> into a heap
> class and should make this class assignment possible...

A precision: it seems that just addind Py_TPFLAGS_HEAPTYPE flag in
the
PyTypeObject tp_flags is not all you have to do to turn a static type
into a heap type: indeed, when doing such in the Noddy examples,
I have a segfault when just typing:
n=Noddy()
n

there is an access to the ht_name slot that is apparently non
initialized...

So Maybe the core of the problem is that I do not define the heap type
correctlyDo anybody have (or can tell me where to find) a small
example of an extension module defining a heap class? Similar to the
Noddy examples from the python doc?
I did not find any concrete example of Py_TPFLAGS_HEAPTYPE in the
current doc or on the net...

Best regards,

Greg.

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Re: BUSTED!!! 100% VIDEO EVIDENCE that WTC7 was controlled demolition!! NEW FOOTAGE!!! Ask yourself WHY havn't I seen this footage before?

[Peter Webb]

> Ask yourself WHY havn't I seen this footage before?
> 
> 

OK, why haven't you seen this footage before?


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Re: Microsoft's Dynamic Languages Runtime (DLR)

[antoanjamison]

On May 2, 8:22 pm, sturlamolden <[EMAIL PROTECTED]> wrote:
> On Monday Microsoft announced a new runtime for dynamic languages,
> which they call "DLR". It sits on top of the conventional .NET runtime
> (CLR)  and provides services for dynamically typed languages like
> Python or Lisp (thus the cross-posting). Apparently is is distributed
> under a BSD-like open-source license.
>
> I am curious to know how it performs in comparison to CPython and an
> efficient compiled Lisp like CMUCL. Speed is a major problem with
> CPython but not with .NET or CMUCL, so it will be interesting to see
> how the DLR performs in comparison. It would be great to finally see a
> Python that runs on steroids, but knowing M$ bloatware my expectations
> are not too high.
>
> Has anyone looked at the DLR yet? What are your impression?
>
> Jim Hugunin har written about the DLR in his blog:
>
> http://blogs.msdn.com/hugunin/
>
> To cite one of the comments: "Fuck this microsoft bollocks! You just
> stole the Lisp runtime ideas and fucked them up by stupid it salesman
> lingo." (Khrishna)
>
> Sturla Molden

If I looked at every crup they  promote  I would be braindead by
now.Just look at the DataMining articles at Microsoft research. Piece
of junk IMHO.

Antoan

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Re: ascii to unicode line endings

[Jean-Paul Calderone]

On 3 May 2007 04:30:37 -0700, [EMAIL PROTECTED] wrote:
>On 2 May, 17:29, Jean-Paul Calderone <[EMAIL PROTECTED]> wrote:
>> On 2 May 2007 09:19:25 -0700, [EMAIL PROTECTED] wrote:
>>
>>
>>
>> >The code:
>>
>> >import codecs
>>
>> >udlASCII = file("c:\\temp\\CSVDB.udl",'r')
>> >udlUNI = codecs.open("c:\\temp\\CSVDB2.udl",'w',"utf_16")
>>
>> >udlUNI.write(udlASCII.read())
>>
>> >udlUNI.close()
>> >udlASCII.close()
>>
>> >This doesn't seem to generate the correct line endings. Instead of
>> >converting 0x0D/0x0A to 0x0D/0x00/0x0A/0x00, it leaves it as  0x0D/
>> >0x0A
>>
>> >I have tried various 2 byte unicode encoding but it doesn't seem to
>> >make a difference. I have also tried modifying the code to read and
>> >convert a line at a time, but that didn't make any difference either.
>>
>> >I have tried to understand the unicode docs but nothing seems to
>> >indicate why an seemingly incorrect conversion is being done.
>> >Obviously I am missing something blindingly obvious here, any help
>> >much appreciated.
>>
>> Consider this simple example:
>>
>>   >>> import codecs
>>   >>> f = codecs.open('test-newlines-file', 'w', 'utf16')
>>   >>> f.write('\r\n')
>>   >>> f.close()
>>   >>> f = file('test-newlines-file')
>>   >>> f.read()
>>   '\xff\xfe\r\x00\n\x00'
>>   >>>
>>
>> And how it differs from your example.  Are you sure you're examining
>> the resulting output properly?
>>
>> By the way, "\r\0\n\0" isn't a "unicode line ending", it's just the UTF-16
>> encoding of "\r\n".
>>
>> Jean-Paul
>
>I am not sure what you are driving at here, since I started with an
>ascii file, whereas you just write a unicode file to start with. I
>guess the direct question is "is there a simple way to convert my
>ascii file to a utf16 file?". I thought either string.encode() or
>writing to a utf16 file would do the trick but it probably isn't that
>simple!

There's no such thing as a unicode file.  The only difference between
the code you posted and the code I posted is that mine is self-contained
and demonstrates that the functionality works as you expected it to work,
whereas the code you posted is requires external resources which are not
available to run and produces external results which are not available to
be checked regarding their correctness.

So what I'm driving at is that both your example and mine are doing it
correctly (because they are doing the same thing), and mine demonstrates
that it is correct, but we have to take your word on the fact that yours
doesn't work. ;)

Jean-Paul
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Re: Microsoft's Dynamic Languages Runtime (DLR)

[Duncan Booth]

sturlamolden <[EMAIL PROTECTED]> wrote:

> I am curious to know how it performs in comparison to CPython and an
> efficient compiled Lisp like CMUCL. Speed is a major problem with
> CPython but not with .NET or CMUCL, so it will be interesting to see
> how the DLR performs in comparison. It would be great to finally see a
> Python that runs on steroids, but knowing M$ bloatware my expectations
> are not too high.

The video of Jim Hugunin's talk from MIX has a slide showing how many 
Pystones you get on some different versions of Python. Of course that is 
just one benchmark and not terribly relevant to any real applications, but 
if you do get a similar speedup in real code 'Python that runs on 
steroids' won't be far from the truth.

The claimed figures were 50,000 Pystones for CPython 2.5, and 101,000 for 
the latest IronPython. (He didn't mention it, but I believe Psyco will 
outdo both of these.)
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Re: Comparing bitmap images for differences?

[Dave Johnston]

On May 2, 10:36 am, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
wrote:
> Thanks for the tip for an algorithm - I can see how that could work
> really nicely (and it gives me some ideas for other things, too!)
> Thanks also for the link to the OpenCV bindings.  I'll give 'em a try
> and see what happens.

I did similar stuff for a project at Uni, but for tracking
pedestrians... in (eurgh) Java.
Tad boring, but might help a little bit: http://uni.johnsto.co.uk/crowd/

Unfortunately it only got tested on pre-recorded feeds, not live ones.
The background removal was fun. I think I ended up getting the
background by converting every 5th frame to grayscale, and calculating
the median for each pixel position across the sample. A couple filters
to remove tiny 1 or 2 pixel specks of noise, and then went onto blob
detection for identifying people and tracking their movement across
the entire video.

The same filtering in numpy should be really quite fast indeed!

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Re: passing an array of variant in vb to a python COM object = win32com bug ?

[Gabriel Genellina]

En Thu, 03 May 2007 04:54:43 -0300, vml <[EMAIL PROTECTED]> escribió:

> I have a python com object which contains a method to inverse an array
> in vb 6 the definition of the class is :
>
> class Fop:
> _public_methods_ = [ 'SqVal' ]
> def SqVal(self,*val):
> #vol=(val[0][0],val[0][1])
> #mat1=mat((vol))
> #up=linalg.inv(mat1)
> return str(val)#up
> _reg_verprogid_ = "Python.Fop.3"
> _reg_progid_ = "Python.Fop"
> _reg_desc_ = "Python Fop"
> _reg_clsid_ = "{30BD3490-2632-11cf-AD5B-524153480001}"
>
> I pass to this method an array of variant which is the matrix to
> invert like that:
> vb6 code :
>
>
>Set obj = CreateObject("Python.Fop")
> Dim ty(1, 1) As Variant
>
> ty(0, 0) = 1
> ty(1, 0) = 2
> ty(0, 1) = 3
> ty(1, 1) = 4
>
> toto = obj.SqVal(ty)
>
>
> when I dispaly toto as str(val) I obtain the following tuple "(((1,
> 3), (2, 4)),)" which is not usable 
>
> Do you have an idea to explain this strange behaviour ?

This is the expected behaviour. Writing it completely in Python:

py> def SqVal(*val):
...   return str(val)
...
py> ty=((1,3),(2,4))
py> SqVal(ty)
'(((1, 3), (2, 4)),)'

The *val parameter receives a tuple, whose elements are the positional  
arguments used when calling the function. As you call the function with a  
single argument, val receives a tuple with a single element.
Perhaps you want to write it as:

py> def SqVal(val):
...   print val[0][0]
...   print val[0][1]
...   print val[1][0]
...   print val[1][1]
...
py> SqVal(ty)
1
3
2
4

(Of course, if used as a Fop method, dont forget the "self" parameter)

-- 
Gabriel Genellina
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Re: ascii to unicode line endings

[Jerry Hill]

On 2 May 2007 09:19:25 -0700, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
> The code:
>
> import codecs
>
> udlASCII = file("c:\\temp\\CSVDB.udl",'r')
> udlUNI = codecs.open("c:\\temp\\CSVDB2.udl",'w',"utf_16")
> udlUNI.write(udlASCII.read())
> udlUNI.close()
> udlASCII.close()
>
> This doesn't seem to generate the correct line endings. Instead of
> converting 0x0D/0x0A to 0x0D/0x00/0x0A/0x00, it leaves it as  0x0D/
> 0x0A

That code (using my own local files, of course) basically works for me.

If I open my input file with mode 'r', as you did above, my '\r\n'
pairs get transformed to '\n' when I read them in and are written to
my output file as 0x00 0x0A.  If I open the input file in binary mode
'rb' then my output file shows the expected sequence of 0x00 0x0D 0x00
0x0A.

Perhaps there's a quirk of your version of python or your platform?  I'm running
Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit
(Intel)] on win32

-- 
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Re: Firefighters at the site of WTC7 "Move away the building is going to blow up, get back the building is going to blow up."

[default]

On 2 May 2007 20:10:20 -0700, Midex <[EMAIL PROTECTED]> wrote:

>LIES LIES LIES LIES LIES

Trying to understand the World Trade Center events is like waking up
to act fifteen of a long Greek Tragedy. It needs a complex fabric of
description to give a full picture. In explaining this crisis, we will
be showing how the situation rests on layers of historical
developments, layers of crises and solutions.

shamelessly taken from:
http://www.againstsleepandnightmare.com/ASAN/ASAN7/ASAN7.html

The World After September 11th, 2001

The Old Mole

By the time you read this, a crisis different from September 11th may
well be foremost in people's minds. Read on. For us today, all the
crises merge to one and we can see the form of Enron's Collapse or the
Iraq War within September 11th and vice-versa. Now, beyond the death
and destruction, the horror of an event like September 11th is the
horror of losing control of your world. This feeling is an extension
of the ordinary experience of being a resident of modern capitalist
society. Here, work, commuting, shopping, and television are
transmitted to you in ways that are beyond any individual or
collective control. 

Damn good read. 
-- 

== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet 
News==
http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ 
Newsgroups
= East and West-Coast Server Farms - Total Privacy via Encryption =
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file Error

[saif . shakeel]

Hi,
I am parsing an xml file,and using raw_input command to ask the
user to enter the file name.Ex

>>>
Enter The ODX File Path:

Suppose my code does not work properly,then in the python idle window
it shows something like this:
>>>
C:\Projects\ODX Import\Sample Files\MiscFiles
\CIM_A3300_diag_spec_sw49.xml
Traceback (most recent call last):
  File "C:\Projects\ODX Import\code_ini\odxparse_mod_off_comm.py",
line 339, in 
process_variant(variant)
  File "C:\Projects\ODX Import\code_ini\odxparse_mod_off_comm.py",
line 285, in process_variant
triplet = triplet + get_did_lengths(iservice,local_service_id)
  File "C:\Projects\ODX Import\code_ini\odxparse_mod_off_comm.py",
line 238, in get_did_lengths
local_min = local_min + ddoref_min[ddorefstring]
KeyError: '_210'

   This is some bug related to code ..thats ok..but when i run
the program immediately again for some other input..then it does not
show the prompt :
>>>
Enter The ODX File Path:

   but instead a blinking prompt which accepts the
filename something like this:
>>>
C:\Projects\ODX Import\Sample Files\MiscFiles\Diagnostic CTS Global
Epsilon TIM V1.4.xml

I want the inputfile prompt to appear regardless of
the error condition.I dont know where the problem lies.Can someone
help me out.
 Thanks

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Re: How to check if a string is empty in python?

[Ant]

On May 3, 5:59 am, [EMAIL PROTECTED] (Alex Martelli) wrote:
> Steven D'Aprano <[EMAIL PROTECTED]> wrote:
> > On Wed, 02 May 2007 21:19:54 -0400, Roy Smith wrote:
>
> > > for c in s:
> > >raise "it's not empty"
>
> > String exceptions are depreciated and shouldn't be used.
>
> >http://docs.python.org/api/node16.html
>
> They're actually deprecated, not depreciated.

In Steven's defence, string exceptions *are* probably worth less, as
there's no longer such a demand for them.

--
Ant...

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Re: Microsoft's Dynamic Languages Runtime (DLR)

[Jean-Paul Calderone]

On 3 May 2007 12:13:49 GMT, Duncan Booth <[EMAIL PROTECTED]> wrote:
>sturlamolden <[EMAIL PROTECTED]> wrote:
>
>> I am curious to know how it performs in comparison to CPython and an
>> efficient compiled Lisp like CMUCL. Speed is a major problem with
>> CPython but not with .NET or CMUCL, so it will be interesting to see
>> how the DLR performs in comparison. It would be great to finally see a
>> Python that runs on steroids, but knowing M$ bloatware my expectations
>> are not too high.
>
>The video of Jim Hugunin's talk from MIX has a slide showing how many
>Pystones you get on some different versions of Python. Of course that is
>just one benchmark and not terribly relevant to any real applications, but
>if you do get a similar speedup in real code 'Python that runs on
>steroids' won't be far from the truth.
>
>The claimed figures were 50,000 Pystones for CPython 2.5, and 101,000 for
>the latest IronPython. (He didn't mention it, but I believe Psyco will
>outdo both of these.)

fwiw, my desktop happens to do 50,000 pystones with cpython 2.4 and 294,000
pystones with cpython 2.4 and psyco.full()

Jean-Paul
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Re: Lazy evaluation: overloading the assignment operator?

[Antoon Pardon]

On 2007-05-03, sturlamolden <[EMAIL PROTECTED]> wrote:
> On May 3, 6:22 am, Charles Sanders <[EMAIL PROTECTED]>
> wrote:
>
>> y = a*b+c*d   # Returns a proxy object
>>
>> x = y[4]  # Computes x = a[4]*b[4] + c[4]*d[4]
>>
>> v = y.eval()  # Evaluates all elements, returning Xarray
>>
>> z = ((a+b)*(c+d)).eval()  # Also evaluates all elements
>
> When I suggested this on the NumPy mailing list, I too suggested using
> the indexing operator to trigger the computations. But I am worried
> that if an expression like
>
> y = a*b+c*d
>
> returns a proxy, it is somehow possible to mess things up by creating
> cyclically dependent proxies. I may be wrong about this, in which case
> __getitem__ et al. will do the job.

How do you expect to handle the following kind of situation:

  while :
x = y
a = ...
b = ...
y = a * x + b 

-- 
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Re: passing an array of variant in vb to a python COM object = win32com bug ?

[vml]

On 3 mai, 14:20, "Gabriel Genellina" <[EMAIL PROTECTED]> wrote:
> En Thu, 03 May 2007 04:54:43 -0300, vml <[EMAIL PROTECTED]> escribió:
>
>
>
> > I have a python com object which contains a method to inverse an array
> > in vb 6 the definition of the class is :
>
> > class Fop:
> > _public_methods_ = [ 'SqVal' ]
> > def SqVal(self,*val):
> > #vol=(val[0][0],val[0][1])
> > #mat1=mat((vol))
> > #up=linalg.inv(mat1)
> > return str(val)#up
> > _reg_verprogid_ = "Python.Fop.3"
> > _reg_progid_ = "Python.Fop"
> > _reg_desc_ = "Python Fop"
> > _reg_clsid_ = "{30BD3490-2632-11cf-AD5B-524153480001}"
>
> > I pass to this method an array of variant which is the matrix to
> > invert like that:
> > vb6 code :
>
> >Set obj = CreateObject("Python.Fop")
> > Dim ty(1, 1) As Variant
>
> > ty(0, 0) = 1
> > ty(1, 0) = 2
> > ty(0, 1) = 3
> > ty(1, 1) = 4
>
> > toto = obj.SqVal(ty)
>
> > when I dispaly toto as str(val) I obtain the following tuple "(((1,
> > 3), (2, 4)),)" which is not usable 
>
> > Do you have an idea to explain this strange behaviour ?
>
> This is the expected behaviour. Writing it completely in Python:
>
> py> def SqVal(*val):
> ...   return str(val)
> ...
> py> ty=((1,3),(2,4))
> py> SqVal(ty)
> '(((1, 3), (2, 4)),)'
>
> The *val parameter receives a tuple, whose elements are the positional
> arguments used when calling the function. As you call the function with a
> single argument, val receives a tuple with a single element.
> Perhaps you want to write it as:
>
> py> def SqVal(val):
> ...   print val[0][0]
> ...   print val[0][1]
> ...   print val[1][0]
> ...   print val[1][1]
> ...
> py> SqVal(ty)
> 1
> 3
> 2
> 4
>
> (Of course, if used as a Fop method, dont forget the "self" parameter)
>
> --
> Gabriel Genellina

I just tried to replace the *val by SqVal(self,val) and call the
method in vb but it crashes down :

"when refilling safe array the sequence must have the same number of
dimension as the existing array"

my python code is now :

 def SqVal(self,val):
##volr=[val[0][0][i] for i in range(size(val,2))]
##voli=[val[0][1][i] for i in range(size(val,2))]
##mat1=mat(volr)+1j*mat(voli)
##up=linalg.pinv(mat1)
##out=up.real.tolist()
##out.extend(up.imag.tolist())
return val

By the way Do you have any idea to debug the com server script ? ( I
would like to know if a can access the value in the function while
calling it from vb 6)




tahnks a lot !


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Re: ascii to unicode line endings

[fidtz]

On 3 May, 13:00, Jean-Paul Calderone <[EMAIL PROTECTED]> wrote:
> On 3 May 2007 04:30:37 -0700, [EMAIL PROTECTED] wrote:
>
>
>
> >On 2 May, 17:29, Jean-Paul Calderone <[EMAIL PROTECTED]> wrote:
> >> On 2 May 2007 09:19:25 -0700, [EMAIL PROTECTED] wrote:
>
> >> >The code:
>
> >> >import codecs
>
> >> >udlASCII = file("c:\\temp\\CSVDB.udl",'r')
> >> >udlUNI = codecs.open("c:\\temp\\CSVDB2.udl",'w',"utf_16")
>
> >> >udlUNI.write(udlASCII.read())
>
> >> >udlUNI.close()
> >> >udlASCII.close()
>
> >> >This doesn't seem to generate the correct line endings. Instead of
> >> >converting 0x0D/0x0A to 0x0D/0x00/0x0A/0x00, it leaves it as  0x0D/
> >> >0x0A
>
> >> >I have tried various 2 byte unicode encoding but it doesn't seem to
> >> >make a difference. I have also tried modifying the code to read and
> >> >convert a line at a time, but that didn't make any difference either.
>
> >> >I have tried to understand the unicode docs but nothing seems to
> >> >indicate why an seemingly incorrect conversion is being done.
> >> >Obviously I am missing something blindingly obvious here, any help
> >> >much appreciated.
>
> >> Consider this simple example:
>
> >>   >>> import codecs
> >>   >>> f = codecs.open('test-newlines-file', 'w', 'utf16')
> >>   >>> f.write('\r\n')
> >>   >>> f.close()
> >>   >>> f = file('test-newlines-file')
> >>   >>> f.read()
> >>   '\xff\xfe\r\x00\n\x00'
>
> >> And how it differs from your example.  Are you sure you're examining
> >> the resulting output properly?
>
> >> By the way, "\r\0\n\0" isn't a "unicode line ending", it's just the UTF-16
> >> encoding of "\r\n".
>
> >> Jean-Paul
>
> >I am not sure what you are driving at here, since I started with an
> >ascii file, whereas you just write a unicode file to start with. I
> >guess the direct question is "is there a simple way to convert my
> >ascii file to a utf16 file?". I thought either string.encode() or
> >writing to a utf16 file would do the trick but it probably isn't that
> >simple!
>
> There's no such thing as a unicode file.  The only difference between
> the code you posted and the code I posted is that mine is self-contained
> and demonstrates that the functionality works as you expected it to work,
> whereas the code you posted is requires external resources which are not
> available to run and produces external results which are not available to
> be checked regarding their correctness.
>
> So what I'm driving at is that both your example and mine are doing it
> correctly (because they are doing the same thing), and mine demonstrates
> that it is correct, but we have to take your word on the fact that yours
> doesn't work. ;)
>
> Jean-Paul

Thanks for the advice. I cannot prove what is going on. The following
code seems to work fine as far as console output goes, but the actual
bit patterns of the files on disk are not what I am expecting (or
expected as input by the ultimate user of the converted file). Which I
can't prove of course.

>>> import codecs
>>> testASCII = file("c:\\temp\\test1.txt",'w')
>>> testASCII.write("\n")
>>> testASCII.close()
>>> testASCII = file("c:\\temp\\test1.txt",'r')
>>> testASCII.read()
'\n'
Bit pattern on disk : \0x0D\0x0A
>>> testASCII.seek(0)
>>> testUNI = codecs.open("c:\\temp\\test2.txt",'w','utf16')
>>> testUNI.write(testASCII.read())
>>> testUNI.close()
>>> testUNI = file("c:\\temp\\test2.txt",'r')
>>> testUNI.read()
'\xff\xfe\n\x00'
Bit pattern on disk:\0xff\0xfe\0x0a\0x00
Bit pattern I was expecting:\0xff\0xfe\0x0d\0x00\0x0a\0x00
>>> testUNI.close()

Dom

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Re: BUSTED!!! 100% VIDEO EVIDENCE that WTC7 was controlled demolition!! NEW FOOTAGE!!! Ask yourself WHY havn't I seen this footage before?

[Eeyore]

Peter Webb wrote:

> > Ask yourself WHY havn't I seen this footage before?
> >
> > 
>
> OK, why haven't you seen this footage before?

Nice response !

Graham


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Re: ascii to unicode line endings

[fidtz]

On 3 May, 13:39, "Jerry Hill" <[EMAIL PROTECTED]> wrote:
> On 2 May 2007 09:19:25 -0700, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
>
> > The code:
>
> > import codecs
>
> > udlASCII = file("c:\\temp\\CSVDB.udl",'r')
> > udlUNI = codecs.open("c:\\temp\\CSVDB2.udl",'w',"utf_16")
> > udlUNI.write(udlASCII.read())
> > udlUNI.close()
> > udlASCII.close()
>
> > This doesn't seem to generate the correct line endings. Instead of
> > converting 0x0D/0x0A to 0x0D/0x00/0x0A/0x00, it leaves it as  0x0D/
> > 0x0A
>
> That code (using my own local files, of course) basically works for me.
>
> If I open my input file with mode 'r', as you did above, my '\r\n'
> pairs get transformed to '\n' when I read them in and are written to
> my output file as 0x00 0x0A.  If I open the input file in binary mode
> 'rb' then my output file shows the expected sequence of 0x00 0x0D 0x00
> 0x0A.
>
> Perhaps there's a quirk of your version of python or your platform?  I'm 
> running
> Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit
> (Intel)] on win32
>
> --
> Jerry

Thanks very much! Not sure if you intended to fix my whole problem,
but changing the read mode to 'rb' has done the trick :)

Dom

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Re: hp 11.11 64 bit python 2.5 build gets error "import site failed"

[bhochstetler]

On May 2, 5:09 pm, "Martin v. Löwis" <[EMAIL PROTECTED]> wrote:
> > "import site failed"
> > OverflowError: signed integer is greater than the maximum.
>
> > This is happening in the convertsimple() routine when it tries to
> > return a signed int:
>
> > ival = PyInt_AsLong(arg)
>
> > the ival is larger than what is defined in INT_MAX.
>
> > Why is this happening in a standard HP 64 bit build?
>
> Can you provide a complete gdb/dbx backtrace?
>
> Some function tries to convert a Python int into a C int,
> using the "i" conversion character. Python int uses C long
> for internal representation, and that particular C long
> happens to be larger than  INT_MAX. This is quite reasonable
> to happen in principle, but shouldn't happen on interpreter
> startup.
>
> So the questions are:
> - what are the callers of convertsimple here? (in particular,
>   where does the call to PyArg_ParseTuple come from?)
> - what is the value of ival?
> - where does that number come from?
>
> The first two questions are best answered with a C debugger.
> Depending on the answer, the third question may nor may not
> need an answer.
>
> Good luck,
> Martin
>
> P.S. If you are asking in the more abstract sense "why is that
> happening to me?", the answer is "because you are using an
> uncommon platform on which Python sees little or no testing".
> To work around, try a 32-bit build, or switch to Solaris,
> OS X, Debian Linux, or (heaven forbid) MS Windows :-)



> - what are the callers of convertsimple here? (in particular,
>   where does the call to PyArg_ParseTuple come from?)
since the debugger locks up when I run, here is a printf call stack of
where things are happening:

import site # precompiled from ...
builtin___import__
PyArg_ParseTupleAndKeywords
vgetargskeywords: positional arg: 0
convertitem
vgetargskeywords: positional arg: 1
convertitem
vgetargskeywords: positional arg: 2
convertitem
vgetargskeywords: positional arg: 3
convertitem
vgetargskeywords: positional arg: 4
convertitem

> - what is the value of ival?
ival: 4294967295

> - where does that number come from?

It is coming from the call to PyInt_AsLong. In that function there is
a call to:
PyInt_AS_LONG((PyIntObject*)op)
which returns the value of ival.

I wish we could just skip this port, but it is required for our
product that we have HP 64 bit. This did not happen with python 2.3.1
or 2.0.

Thanks for the help.

Brad

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Re: file Error

[Gabriel Genellina]

En Thu, 03 May 2007 09:39:37 -0300, <[EMAIL PROTECTED]> escribió:

> Hi,
> I am parsing an xml file,and using raw_input command to ask the
> user to enter the file name.Ex
>

> Enter The ODX File Path:
>
> Suppose my code does not work properly,then in the python idle window
> it shows something like this:
> [...traceback...]
> I want the inputfile prompt to appear regardless of
> the error condition.I dont know where the problem lies.Can someone
> help me out.

- IDLE is a development environment - don't use it to actually run your  
program in production.

- Instead of asking the user to type the file name, accept it as a  
parameter, that's what almost everyone else does in the world... It has  
many advantages: you can associate your program with the filename  
extension, you can use the "Send to..." menu, you can run it inside a  
batch file, you can drop a file over your program to be processed, etc.

-- 
Gabriel Genellina
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Re: Handling Infinite Loops on Server Applications

[Gabriel Genellina]

En Wed, 02 May 2007 21:38:52 -0300, Paul Kozik <[EMAIL PROTECTED]> escribió:

> I'm working with a small server program I'm writing for a small video
> game. The main class constructor starts a thread that handles socket
> connections, which itself starts new threads for each user connection.

And what's the purpose of the main thread then?

> The actual server program itself however needs to wait in the
> background, but continue looping as not to close the running threads.
> The problem is, simply running a [while True: pass] main loop in this
> style eats precious CPU cycles (and for nothing). If it waits for
> input, such as a socket.accept() or raw_input(), this problem does not
> occur (obviously because it's not constantly looping).

Exactly. Use the network handling thread as the main thread, by example.

> What would be the best way to handle this, perhaps in a fashion
> similar to how most server programs are handled (with arguments such
> as [apache start], [apache stop])? Any guides towards this type of
> application development?

See the asyncore module, or any of the predefined servers in the Python  
library.

-- 
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Re: file Error

[saif . shakeel]

On May 3, 6:09 pm, "Gabriel Genellina" <[EMAIL PROTECTED]> wrote:
> En Thu, 03 May 2007 09:39:37 -0300, <[EMAIL PROTECTED]> escribió:
>
> > Hi,
> > I am parsing an xml file,and using raw_input command to ask the
> > user to enter the file name.Ex
>
> > Enter The ODX File Path:
>
> > Suppose my code does not work properly,then in the python idle window
> > it shows something like this:
> > [...traceback...]
> > I want the inputfile prompt to appear regardless of
> > the error condition.I dont know where the problem lies.Can someone
> > help me out.
>
> - IDLE is a development environment - don't use it to actually run your  
> program in production.
>
> - Instead of asking the user to type the file name, accept it as a  
> parameter, that's what almost everyone else does in the world... It has  
> many advantages: you can associate your program with the filename  
> extension, you can use the "Send to..." menu, you can run it inside a  
> batch file, you can drop a file over your program to be processed, etc.
>
> --
> Gabriel Genellina

Thanks for the replyHow do i accept the filename is a
parameter and avoid the error.Can you elaborate.

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SQLObject 0.7.6

[Oleg Broytmann]

Hello!

I'm pleased to announce the 0.7.6 release of SQLObject.

What is SQLObject
=

SQLObject is an object-relational mapper.  Your database tables are described
as classes, and rows are instances of those classes.  SQLObject is meant to be
easy to use and quick to get started with.

SQLObject supports a number of backends: MySQL, PostgreSQL, SQLite, and
Firebird.  It also has newly added support for Sybase, MSSQL and MaxDB (also
known as SAPDB).


Where is SQLObject
==

Site:
http://sqlobject.org

Mailing list:
https://lists.sourceforge.net/mailman/listinfo/sqlobject-discuss

Archives:
http://news.gmane.org/gmane.comp.python.sqlobject

Download:
http://cheeseshop.python.org/pypi/SQLObject/0.7.6

News and changes:
http://sqlobject.org/docs/News.html


What's New
==

News since 0.7.5


Bug Fixes
-

* Fixed a longstanding bug with .select() ignoring 'limit' parameter.

* Fixed a bug with absent comma in JOINs.

* Fixed sqlbuilder - .startswith(), .endswith() and .contains() assumed
  their parameter must be a string; now you can pass an SQLExpression:
  Table.q.name.contains(func.upper('a')), for example.

* Fixed a longstanding bug in sqlbuilder.Select() with groupBy being a
  sequence.

* Fixed a bug with Aliases in JOINs.

* Yet another patch to properly initialize MySQL connection encoding.

* Fixed a minor comparison problem in test_decimal.py.

Docs


* Added documentation about 'validator' Col constructor option.

* More documentation about orderBy.

For a more complete list, please see the news:
http://sqlobject.org/docs/News.html

Oleg.
-- 
 Oleg Broytmannhttp://phd.pp.ru/[EMAIL PROTECTED]
   Programmers don't die, they just GOSUB without RETURN.
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Re: passing an array of variant in vb to a python COM object = win32com bug ?

[Larry Bates]

vml wrote:
> On 3 mai, 14:20, "Gabriel Genellina" <[EMAIL PROTECTED]> wrote:
>> En Thu, 03 May 2007 04:54:43 -0300, vml <[EMAIL PROTECTED]> escribió:
>>
>>
>>
>>> I have a python com object which contains a method to inverse an array
>>> in vb 6 the definition of the class is :
>>> class Fop:
>>> _public_methods_ = [ 'SqVal' ]
>>> def SqVal(self,*val):
>>> #vol=(val[0][0],val[0][1])
>>> #mat1=mat((vol))
>>> #up=linalg.inv(mat1)
>>> return str(val)#up
>>> _reg_verprogid_ = "Python.Fop.3"
>>> _reg_progid_ = "Python.Fop"
>>> _reg_desc_ = "Python Fop"
>>> _reg_clsid_ = "{30BD3490-2632-11cf-AD5B-524153480001}"
>>> I pass to this method an array of variant which is the matrix to
>>> invert like that:
>>> vb6 code :
>>>Set obj = CreateObject("Python.Fop")
>>> Dim ty(1, 1) As Variant
>>> ty(0, 0) = 1
>>> ty(1, 0) = 2
>>> ty(0, 1) = 3
>>> ty(1, 1) = 4
>>> toto = obj.SqVal(ty)
>>> when I dispaly toto as str(val) I obtain the following tuple "(((1,
>>> 3), (2, 4)),)" which is not usable 
>>> Do you have an idea to explain this strange behaviour ?
>> This is the expected behaviour. Writing it completely in Python:
>>
>> py> def SqVal(*val):
>> ...   return str(val)
>> ...
>> py> ty=((1,3),(2,4))
>> py> SqVal(ty)
>> '(((1, 3), (2, 4)),)'
>>
>> The *val parameter receives a tuple, whose elements are the positional
>> arguments used when calling the function. As you call the function with a
>> single argument, val receives a tuple with a single element.
>> Perhaps you want to write it as:
>>
>> py> def SqVal(val):
>> ...   print val[0][0]
>> ...   print val[0][1]
>> ...   print val[1][0]
>> ...   print val[1][1]
>> ...
>> py> SqVal(ty)
>> 1
>> 3
>> 2
>> 4
>>
>> (Of course, if used as a Fop method, dont forget the "self" parameter)
>>
>> --
>> Gabriel Genellina
> 
> I just tried to replace the *val by SqVal(self,val) and call the
> method in vb but it crashes down :
> 
> "when refilling safe array the sequence must have the same number of
> dimension as the existing array"
> 
> my python code is now :
> 
>  def SqVal(self,val):
> ##volr=[val[0][0][i] for i in range(size(val,2))]
> ##voli=[val[0][1][i] for i in range(size(val,2))]
> ##mat1=mat(volr)+1j*mat(voli)
> ##up=linalg.pinv(mat1)
> ##out=up.real.tolist()
> ##out.extend(up.imag.tolist())
> return val
> 
> By the way Do you have any idea to debug the com server script ? ( I
> would like to know if a can access the value in the function while
> calling it from vb 6)
> 
> 
> 
> 
> tahnks a lot !
> 
> 
Debugging COM objects is best done using logging module or at least
writing to a file during processing.  You can review the log file
to see what was going on.

-Larry
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Re: How to check if a string is empty in python?

[Roy Smith]

In article <[EMAIL PROTECTED]>,
 Ant <[EMAIL PROTECTED]> wrote:

> On May 3, 5:59 am, [EMAIL PROTECTED] (Alex Martelli) wrote:
> > Steven D'Aprano <[EMAIL PROTECTED]> wrote:
> > > On Wed, 02 May 2007 21:19:54 -0400, Roy Smith wrote:
> >
> > > > for c in s:
> > > >raise "it's not empty"
> >
> > > String exceptions are depreciated and shouldn't be used.
> >
> > >http://docs.python.org/api/node16.html
> >
> > They're actually deprecated, not depreciated.
> 
> In Steven's defence, string exceptions *are* probably worth less, as
> there's no longer such a demand for them.

You just wait until they start showing up on Antiques Roadshow :-)
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SQLObject 0.8.3

[Oleg Broytmann]

Hello!

I'm pleased to announce the 0.8.3 release of SQLObject.


What is SQLObject
=

SQLObject is an object-relational mapper.  Your database tables are described
as classes, and rows are instances of those classes.  SQLObject is meant to be
easy to use and quick to get started with.

SQLObject supports a number of backends: MySQL, PostgreSQL, SQLite, and
Firebird.  It also has newly added support for Sybase, MSSQL and MaxDB (also
known as SAPDB).


Where is SQLObject
==

Site:
http://sqlobject.org

Development:
http://sqlobject.org/devel/

Mailing list:
https://lists.sourceforge.net/mailman/listinfo/sqlobject-discuss

Archives:
http://news.gmane.org/gmane.comp.python.sqlobject

Download:
http://cheeseshop.python.org/pypi/SQLObject/0.8.3

News and changes:
http://sqlobject.org/News.html


What's New
==

News since 0.8.2


Bug Fixes
-

* Fixed a longstanding bug with .select() ignoring 'limit' parameter.

* Fixed a bug with absent comma in JOINs.

* Fixed sqlbuilder - .startswith(), .endswith() and .contains() assumed
  their parameter must be a string; now you can pass an SQLExpression:
  Table.q.name.contains(func.upper('a')), for example.

* Fixed a longstanding bug in sqlbuilder.Select() with groupBy being a
  sequence.

* Fixed a bug with Aliases in JOINs.

* Yet another patch to properly initialize MySQL connection encoding.

* Fixed a minor comparison problem in test_decimal.py.

Docs


* Added documentation about 'validator' Col constructor option.

* Added an answer and examples to the FAQ on how to use sqlmeta.createSQL.

* More documentation about orderBy.

For a more complete list, please see the news:
http://sqlobject.org/News.html

Oleg.
-- 
 Oleg Broytmannhttp://phd.pp.ru/[EMAIL PROTECTED]
   Programmers don't die, they just GOSUB without RETURN.
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Re: BUSTED!!! 100% VIDEO EVIDENCE that WTC7 was controlled demolition!! NEW FOOTAGE!!! Ask yourself WHY havn't I seen this footage before?

[MooseFET]

On May 2, 10:24 pm, Major Quaternion Dirt Quantum
<[EMAIL PROTECTED]> wrote:
> maybe, "pulled" is just a firefighteresque synonym
> for gravity doing its thing -- still not subsumed
> in the Standard Model of physicists, so, There.  y'know,
> sort of like, how it is, pilots refer to going "out" and "in,"
> instead of up & down.

You can also try "pull" as a term for a general alarm that says get
everyone out of there.  It could be from "pull the alarm" a term for
triggering an alarm manually or "pull the troops out" a term for
getting soldiers out of a location.

[.]

> thus:
> if you can't prove that all Fermat numbers are pairwise coprime,
> again!


But  but  I've got a video of someone saying it.  That
*proves* it doesn't it.


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Re: My Python annoyances

[Ben Collver]

I rewrote my code in Python and I found myself running into many of the 
same hassles that I run into with other languages: inaccurate and 
incomplete documentation, a maze of little platform-specific quirks to 
work around in the base classes, and a macho community of users.

The python web site recommended Dive Into Python, so I learned by 
reading that.  It has several examples that don't work because the 
Python base classes have changed behavior.  I should have taken that as 
lesson.

I tried to write portable Python code.  The zlib CRC function returned 
different results on architectures between 32 bit and 64 bit 
architectures.  I filed a bug report.  It was closed, without a comment 
from the person who closed it.  I get the unspoken message: bug reports 
are not welcome.

I installed Cygwin on a Windows machine.  I try to quit from an 
interactive Python session.  It tells me that on my platform, I must 
press Control-Z to exit.  I press Control-Z and it makes Python a 
background process.

I tried to use the XML.minidom.  The documentation here is minimal as 
well.  So I read up on other web sites.  It turns out that the interface 
has changed quite a bit from the documentation I found on other web 
sites.  Where are the much loved docstrings?  In 2.3 minidom, they are 
sparse and cryptic.

Between 2.4 and 2.5, tempfile returns a different type of object.  My 
code cannot have a single test, it has check for type(obj) == file or 
obj.__class__ == tempfile._TemporaryFileWrapper.

I decided to make a tkinter front-end for a Python program.  I decided 
to go with tkinter because it is included with many Python 
installations, so it maximizes the chance for my program to run out of 
the box.

The tkinter documentation on the Python site mainly consists of loose 
notes and links to other sites.  The documentation on other sites is 
great, if you already know how to use tkinter.  I ran into bugs in 
TkAqua which make the grid layout unusable for me.  So I will need to 
ask potential users to install Xcode, X11, and mac ports, if they want 
to run my program.

In short, there is plenty of room for improvement.  Admittedly these are 
not problems with the language definition.  But I downloaded a Python 
distribution, and the problems are Python specific.
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Re: Python user group in Portland, OR?

[Ben Collver]

bradallen wrote:
> I would be happy to meet with you and any other Portland Python
> programmers to talk about ideas for organizing a user group.
> There is also some good discussion about it on the Python Advocacy
> the mailing list, because PSF has begun an effort to foster and
> promote
> user groups.

I don't use Ruby, but I read the blog of a dude in Portland who went to 
the Ruby user group.  He said that the programmers there spent as much 
time talking about Python and Perl as they did about Ruby, so you might 
be interested in that.

Ben
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Sybase module 0.38 released

[Sébastien Sablé]

WHAT IS IT:

The Sybase module provides a Python interface to the Sybase relational
database system.  It supports all of the Python Database API, version
2.0 with extensions.

The module is available here:

http://downloads.sourceforge.net/python-sybase/python-sybase-0.38.tar.gz

The module home page is here:

http://python-sybase.sourceforge.net/


CHANGES SINCE 0.38pre2:

* Corrected bug in databuf_alloc: Sybase reports the wrong maxlength
for numeric type - verified with Sybase 12.5 - thanks to patch
provided by Phil Porter


MAJOR CHANGES SINCE 0.37:

* This release works with python 2.5

* It also works with sybase 15

* It works with 64bits clients

* It can be configured to return native python datetime objects

* The bug "This routine cannot be called because another command
structure has results pending." which appears in various cases has
been corrected

* It includes a unitary test suite based on the dbapi2.0 compliance
test suite
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pyscripter to slow

[Gigs_]

I have some problem with pyscripter.
Sometimes when I type pyscripter get to slow (i type 10 chars and pyscripter 
needs 5 seconds to complete this). This happens mostly on deleting some chars.

It is very frustrating.

Does someone have same situation?

btw
My comp is

amd athlon x2 4000 2mb cache
sapphire am2rd580adv 3200 ati chipset
2GB corsair xm2
sapphire x1650 pro 256mb

windows vista
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newbie: copy base class fields

[tmp123]

Hello,

Thanks for your time.

The following small program gives an error:

#!/usr/bin/python
#

class A:
  def __init__(self):
self.v1=1

  def __repr__(self):
 return "v1=%d\n" % self.v1

class B(A):
  def __init__(self,a):
self=a
self.v2=2

  def __repr__(self):
 return A.__repr__(self) + ("v2=%d\n" % self.v2)

x=A()
print x

y=B(x)
print y



$ ./prueba.pl
v1=1

Traceback (most recent call last):
  File "./prueba.pl", line 23, in 
print y
  File "./prueba.pl", line 17, in __repr__
return A.__repr__(self) + ("v2=%d\n" % self.v2)
  File "./prueba.pl", line 9, in __repr__
return "v1=%d\n" % self.v1
AttributeError: B instance has no attribute 'v1'


It seems that the statement "self=a" is not the correct way to copy
all the fields of the base class from the __init__ argument to the new
object.

Of course, it is not an option to copy one by one all the fields of
class A inside the __init__ of B.

Several variants of the program produces similar results.

Please, could someone explain which way is the correct way?

Thanks a lot.

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Re: SQLObject 0.8.3

[Jorge Godoy]

Oleg Broytmann <[EMAIL PROTECTED]> writes:

> * Fixed sqlbuilder - .startswith(), .endswith() and .contains() assumed
>   their parameter must be a string; now you can pass an SQLExpression:
>   Table.q.name.contains(func.upper('a')), for example.

Oleg,


this made me think: is it possible to call a function in a schema other
than public in PostgreSQL?  For example if I had myschema.myfunction and
wanted to use it I can't do "func.myschema.myfunction"...  Is there
something like a "dbName" for func? :-)


-- 
Jorge Godoy  <[EMAIL PROTECTED]>
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Re: My Python annoyances

[Paul Boddie]

On 3 Mai, 15:49, Ben Collver <[EMAIL PROTECTED]> wrote:
> I rewrote my code in Python and I found myself running into many of the
> same hassles that I run into with other languages: inaccurate and
> incomplete documentation, a maze of little platform-specific quirks to
> work around in the base classes, and a macho community of users.

I'm sorry to hear about that. If by "macho" you mean people who insist
that things are good enough as they are, and that newcomers should
themselves adapt to whatever they may discover, instead of things
being improved so that they are more intuitive and reliable for
newcomers and experienced developers alike, then I'd certainly be
interested in undermining that culture.

> The python web site recommended Dive Into Python, so I learned by
> reading that.  It has several examples that don't work because the
> Python base classes have changed behavior.  I should have taken that as
> lesson.

Really Dive Into Python should be a sufficient guide, and it was
perhaps the best introduction to the language when it was written. It
is very unfortunate that the language has changed in a number of ways
(and exhibits continued change) whilst effort into documenting what is
already there remains neglected amongst the people making all the
changes.

> I tried to write portable Python code.  The zlib CRC function returned
> different results on architectures between 32 bit and 64 bit
> architectures.  I filed a bug report.  It was closed, without a comment
> from the person who closed it.  I get the unspoken message: bug reports
> are not welcome.

Can you provide the bug identifier? Bug reports are generally welcome,
and despite complaints about patch reviews, I've found people
reviewing things I've submitted.

> I installed Cygwin on a Windows machine.  I try to quit from an
> interactive Python session.  It tells me that on my platform, I must
> press Control-Z to exit.  I press Control-Z and it makes Python a
> background process.

Yes, Ctrl-Z exits Python in the standard Windows edition. Since Cygwin
provides a POSIX-like environment, Ctrl-D should be used instead. If
the documentation is wrong, a bug report or patch should be filed
against the software.

> I tried to use the XML.minidom.  The documentation here is minimal as
> well.  So I read up on other web sites.  It turns out that the interface
> has changed quite a bit from the documentation I found on other web
> sites.  Where are the much loved docstrings?  In 2.3 minidom, they are
> sparse and cryptic.

I really don't know what to say about the PyXML/xmlcore situation. I
don't use ElementTree and hardly use PyXML or minidom, but something
really should have been done about the maintenance of the established
libraries rather than declaring them as legacy items and pretending
that they don't exist.

> Between 2.4 and 2.5, tempfile returns a different type of object.  My
> code cannot have a single test, it has check for type(obj) == file or
> obj.__class__ == tempfile._TemporaryFileWrapper.

Try using isinstance or relying on "deeper" knowledge of how the
object will be used.

> I decided to make a tkinter front-end for a Python program.  I decided
> to go with tkinter because it is included with many Python
> installations, so it maximizes the chance for my program to run out of
> the box.
>
> The tkinter documentation on the Python site mainly consists of loose
> notes and links to other sites.  The documentation on other sites is
> great, if you already know how to use tkinter.  I ran into bugs in
> TkAqua which make the grid layout unusable for me.  So I will need to
> ask potential users to install Xcode, X11, and mac ports, if they want
> to run my program.

Take a look at the python.org Wiki for links to other resources on
Tkinter:

http://wiki.python.org/moin/TkInter

Or consider other graphical frameworks:

http://wiki.python.org/moin/GuiProgramming

> In short, there is plenty of room for improvement.  Admittedly these are
> not problems with the language definition.  But I downloaded a Python
> distribution, and the problems are Python specific.

My opinions, already expressed, include the observation that the core
development community is more interested in extending the language
than in strengthening the standard library (and its documentation). It
should be noted that the proposed standard library reorganisation,
which is a very conservative affair, has actually been postponed until
after the release of Python 3.0a1 according to a message I read
recently. And yet, if you read people's lists about what they "hate"
about Python (amongst actual users of Python), guess which thing
almost always comes up?

http://www.google.com/search?q=%22things+I+hate+about+Python%22

Paul

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How to replace the last (and only last) character in a string?

[Johny]

Let's suppose
s='12345 4343 454'
How can I replace the last '4' character?
I tried
string.replace(s,s[len(s)-1],'r')
where 'r' should replace  the last '4'.
But it doesn't work.
Can anyone explain why?

Thanks
L.

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Re: newbie: copy base class fields

[Marc 'BlackJack' Rintsch]

In <[EMAIL PROTECTED]>, tmp123 wrote:

> The following small program gives an error:
> 
> #!/usr/bin/python
> #
> 
> class A:
>   def __init__(self):
> self.v1=1
> 
>   def __repr__(self):
>  return "v1=%d\n" % self.v1
> 
> class B(A):
>   def __init__(self,a):
> self=a
> self.v2=2
> 
>   def __repr__(self):
>  return A.__repr__(self) + ("v2=%d\n" % self.v2)
> 
> x=A()
> print x
> 
> y=B(x)
> print y
> 
> 
> 
> $ ./prueba.pl
> v1=1
> 
> Traceback (most recent call last):
>   File "./prueba.pl", line 23, in 
> print y
>   File "./prueba.pl", line 17, in __repr__
> return A.__repr__(self) + ("v2=%d\n" % self.v2)
>   File "./prueba.pl", line 9, in __repr__
> return "v1=%d\n" % self.v1
> AttributeError: B instance has no attribute 'v1'
> 
> 
> It seems that the statement "self=a" is not the correct way to copy
> all the fields of the base class from the __init__ argument to the new
> object.

This binds the local name `self` to the same object that is bound to `a`. 
Now you have lost the reference to the instance, so the next line sets the
attribute `v2` on the object passed to the constructor of the `B` object.

> Of course, it is not an option to copy one by one all the fields of
> class A inside the __init__ of B.
> 
> Several variants of the program produces similar results.
> 
> Please, could someone explain which way is the correct way?

Call the `__init__()` of `A`:

class B(A):
def __init__(self, a):
A.__init__(self)
self.v2 = 2

Ciao,
Marc 'BlackJack' Rintsch
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Re: sqlite for mac?

[Daniel Nogradi]

> > >> Does sqlite come in a mac version?
> >
> > > The interface (pysqlite) is part of the python 2.5 standard library
> > > but you need to install sqlite itself separately (as far as I
> > > remember) fromwww.sqlite.org
> >
> > http://developer.apple.com/documentation/MacOSX/Conceptual/OSX_Techno...
> >
>
> I downloaded pysqlite, ran the setup script, and tested the
> installation and everything worked fine.  However, if I try to import
> either sqlite, sqlite2, or sqlite3 into a python program, I get an
> error saying there's no such module.
>
> I assume that means pysqlite cannot see the installation of SQlite
> that came preinstalled on my mac.  My python book says to download the
> SQlite source where automatic code generation has already been
> performed.  I did that.  Then my book says says to follow the
> instructions in the README file.  However, the download only has two
> files:  sqlite3.c and sqlite3.h.  As a result, I don't know what to
> do.

If all tests ran fine then pysqlite can see your sqlite installation.
How are you importing sqlite? It's usually something like "from
pysqlite2 import dbapi2 as sqlite" not simply "import sqlite". If you
go to the test directory where everything works you can see how those
modules import it and that should definitely work for you as well.

HTH,
Daniel
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Re: ascii to unicode line endings

[Marc 'BlackJack' Rintsch]

In <[EMAIL PROTECTED]>, fidtz wrote:

 import codecs
 testASCII = file("c:\\temp\\test1.txt",'w')
 testASCII.write("\n")
 testASCII.close()
 testASCII = file("c:\\temp\\test1.txt",'r')
 testASCII.read()
> '\n'
> Bit pattern on disk : \0x0D\0x0A
 testASCII.seek(0)
 testUNI = codecs.open("c:\\temp\\test2.txt",'w','utf16')
 testUNI.write(testASCII.read())
 testUNI.close()
 testUNI = file("c:\\temp\\test2.txt",'r')
 testUNI.read()
> '\xff\xfe\n\x00'
> Bit pattern on disk:\0xff\0xfe\0x0a\0x00
> Bit pattern I was expecting:\0xff\0xfe\0x0d\0x00\0x0a\0x00
 testUNI.close()

Files opened with `codecs.open()` are always opened in binary mode.  So if
you want '\n' to be translated into a platform specific character sequence
you have to do it yourself.

Ciao,
Marc 'BlackJack' Rintsch
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Re: How to replace the last (and only last) character in a string?

[kyosohma]

On May 3, 9:27 am, Johny <[EMAIL PROTECTED]> wrote:
> Let's suppose
> s='12345 4343 454'
> How can I replace the last '4' character?
> I tried
> string.replace(s,s[len(s)-1],'r')
> where 'r' should replace  the last '4'.
> But it doesn't work.
> Can anyone explain why?
>
> Thanks
> L.

I think the reason it's not working is because you're doing it kind of
backwards. For one thing, the "string" module is deprecated. I would
do it like this:

s = s.replace(s[len(s)-1], 'r')

Although that is kind of hard to read. But it works.

Mike

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getmtime in 2.5 reports GMT instead of local time

[Josef Dalcolmo]

Hello,

I have tried this only on Windows XP.

in Python 2.4 os.path.getmtime() used to return an integer representing
the local time.

in Python 2.5 os.path.getmtime() reports a float representing the GMT of the
file's modification time.

Since I could not find any documentation to this behavioural change, I am asking
here: was this change intentional? Is it going to stay? Windows reports
the same time for the file as Python 2.4 used to. So I am tempted to
call this a bug, but wanted some feedback from the developers,
before filing a bug report.


If you want to test this, make sure your local time differs from GMT,
then do:

import os, time
print time.ctime(os.path.getmtime('foo.txt'))

on a file foo.txt, once with Python 2.4 then with Python 2.5, 
and you should see what I mean.

- Josef


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Library Naming

[Trans]

I'm taking a pole on how best to name programming library packages. If
you have a second, please have a look.

  http://7ranscode.blogspot.com/2007/05/library-poll.html

Thanks,
T.

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Re: newbie: copy base class fields

[tmp123]

On May 3, 4:29 pm, Marc 'BlackJack' Rintsch <[EMAIL PROTECTED]> wrote:
>
> > #!/usr/bin/python
> > #
>
> > class A:
> >   def __init__(self):
> > self.v1=1
>
> >   def __repr__(self):
> >  return "v1=%d\n" % self.v1
>
> > class B(A):
> >   def __init__(self,a):
> > self=a
> > self.v2=2
>
> >   def __repr__(self):
> >  return A.__repr__(self) + ("v2=%d\n" % self.v2)
>
> > x=A()
> > print x
>
> > y=B(x)
> > print y
>
> > $ ./prueba.pl
> > v1=1
>
> > Traceback (most recent call last):
> >   File "./prueba.pl", line 23, in 
> > print y
> >   File "./prueba.pl", line 17, in __repr__
> > return A.__repr__(self) + ("v2=%d\n" % self.v2)
> >   File "./prueba.pl", line 9, in __repr__
> > return "v1=%d\n" % self.v1
> > AttributeError: B instance has no attribute 'v1'
>


Hello Marc,

Thanks for your help.

I'm sorry, I've not correctly explained the subject. It is need to
init class B with the current value of the A instance, not with the
initial ones. A best example is:

x=A()
print x

x.v1=3

y=B(x)
print y

at the end, y.v1 must be equal to 3.

Sorry again.


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Re: How to replace the last (and only last) character in a string?

[Johny]

On May 3, 4:37 pm, [EMAIL PROTECTED] wrote:
> On May 3, 9:27 am, Johny <[EMAIL PROTECTED]> wrote:
>
> > Let's suppose
> > s='12345 4343 454'
> > How can I replace the last '4' character?
> > I tried
> > string.replace(s,s[len(s)-1],'r')
> > where 'r' should replace  the last '4'.
> > But it doesn't work.
> > Can anyone explain why?
>
> > Thanks
> > L.
>
> I think the reason it's not working is because you're doing it kind of
> backwards. For one thing, the "string" module is deprecated. I would
> do it like this:
>
> s = s.replace(s[len(s)-1], 'r')
>
> Although that is kind of hard to read. But it works.
>
> Mike


Mike it does NOT work for me.
>>> s.replace(s[len(s)-1], 'r')
'123r5 r3r3 r5r'

I need only the last character to be replaced


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Re: How to replace the last (and only last) character in a string?

[Marc 'BlackJack' Rintsch]

In <[EMAIL PROTECTED]>, Johny wrote:

> Let's suppose
> s='12345 4343 454'
> How can I replace the last '4' character?
> I tried
> string.replace(s,s[len(s)-1],'r')
> where 'r' should replace  the last '4'.
> But it doesn't work.
> Can anyone explain why?

Because you can't change strings.  Any function or method that "changes" a
string returns a new and modified copy.  So does the `string.replace()`
function.  And you don't bind the result to a name, so it is "lost".

This is shorter than using `replace()`:

In [9]: s = '12345 4343 454'

In [10]: s = s[:-1] + 'r'

In [11]: s
Out[11]: '12345 4343 45r'

BTW most things in the `string` module are deprecate because they are
available as methods on string objects.

Ciao,
Marc 'BlackJack' Rintsch
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Re: How to replace the last (and only last) character in a string?

[jay graves]

On May 3, 9:27 am, Johny <[EMAIL PROTECTED]> wrote:
> Let's suppose
> s='12345 4343 454'
> How can I replace the last '4' character?
> I tried
> string.replace(s,s[len(s)-1],'r')
> where 'r' should replace  the last '4'.
> But it doesn't work.
> Can anyone explain why?

Instead of doing it that way, you should use slicing.

>>> s='12345 4343 454'
>>> s = s[:-1] + 'r'
>>> print s
12345 4343 45r
>>>

See
http://docs.python.org/tut/node5.html#strings

HTH.
Jay Graves


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Re: ignorance and intolerance in computing communties

[Xah Lee]

Xah Lee wrote:
«
...
“Ignorance And Intolerance In Online Computing Communities”
http://xahlee.org/Netiquette_dir/ignorance_intolerance.html

...  As i have indicated in my post, it is non-trivial to implement a
function that returns the positive angle of a vector
»

I have now coded this. I think it is probably the most algorithmically
optimal, and rather much simpler than i originally thought. Here's the
Mathematica code:

vectorAngle[{a1_, a2_}] := Module[{x, y},
{x, y} = {a1, a2}/Sqrt[a1^2 + a2^2] // N;
If[x == 0 && y == 0, "fucked",
  If[x == 0, [EMAIL PROTECTED] === 1, π/2, -π/2],
If[y == 0, [EMAIL PROTECTED] === 1, 0, π],
  [EMAIL PROTECTED] === 1, [EMAIL PROTECTED], 2 π - [EMAIL PROTECTED]
  ]
]
  ]
]

Btw, if we can use any Mathematica's buildin function, this is
actually just
vectorAngle2[{a1_, a2_}] := Arg@(Complex @@ {a1, a2})

I'm still interested, if someone would show the source code, of how
Perl, Python, or Lisp or Java, implement the function that finds the
angle of a complex number.

Originally, i was also hoping perhaps there's some math trick by dot
product or combination of trig functions, that obviates the need to
check which quadrant the vector is in ...

  Xah
  [EMAIL PROTECTED]
∑ http://xahlee.org/

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Re: newbie: copy base class fields

[Alex Martelli]

tmp123 <[EMAIL PROTECTED]> wrote:
   ...
> It seems that the statement "self=a" is not the correct way to copy
> all the fields of the base class from the __init__ argument to the new
> object.

Indeed, it isn't.  Assigning to self just rebinds the name 'self' as a
local variable of method B.__init__ -- really useless.

> Of course, it is not an option to copy one by one all the fields of
> class A inside the __init__ of B.
> 
> Several variants of the program produces similar results.
> 
> Please, could someone explain which way is the correct way?

Somebody else suggested you call A.__init__ from inside B.__init__, and
that is correct if what you want to do is "freshly initialize the B
instance as an A".  However, from the fact that you pass to B.__init__
an argument 'a', it looks as if what you're trying to do is indeed copy
each of a's instance variables to self (it's hard to read your mind from
the code you've posted, but if I had to guess that would be by guess),
where a is an instance of A that's not necessarily "freshly
initialized".

In this case, you might for example start B.__init__ with:
self.__dict__.update(a.__dict__)

This is not very elegant or solid, but at least it's short and fast:-).

A better way would require having _somewhere_ a list or tuple with the
names of all the instance variables you know you want to copy; if that
list of names was for example B._names_to_copy,
for name in self._names_to_copy:
value = getattr(a, name)
setattr(self, name, value)
IS elegant and robust.  The advantages of explicitly controlling what
names you're copying (rather than blindly taking whatever happens to be
there) are similar to those of avoiding "from wherever import *": you
avoid accidental name pollution.  The advantages of using getattr and
setattr (rather than blindly working on the __dict__s) are those of
working correctly and transparently with properties and other similar
kinds of descriptors, rather than just "raw" instance variables.


Alex
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Re: How to replace the last (and only last) character in a string?

[Matimus]

On May 3, 7:44 am, Johny <[EMAIL PROTECTED]> wrote:
> On May 3, 4:37 pm, [EMAIL PROTECTED] wrote:
>
>
>
> > On May 3, 9:27 am, Johny <[EMAIL PROTECTED]> wrote:
>
> > > Let's suppose
> > > s='12345 4343 454'
> > > How can I replace the last '4' character?
> > > I tried
> > > string.replace(s,s[len(s)-1],'r')
> > > where 'r' should replace  the last '4'.
> > > But it doesn't work.
> > > Can anyone explain why?
>
> > > Thanks
> > > L.
>
> > I think the reason it's not working is because you're doing it kind of
> > backwards. For one thing, the "string" module is deprecated. I would
> > do it like this:
>
> > s = s.replace(s[len(s)-1], 'r')
>
> > Although that is kind of hard to read. But it works.
>
> > Mike
>
> Mike it does NOT work for me.>>> s.replace(s[len(s)-1], 'r')
>
> '123r5 r3r3 r5r'
>
> I need only the last character to be replaced

Its not working because str.replace:

[docstring]
Help on method_descriptor:

replace(...)
S.replace (old, new[, count]) -> string

Return a copy of string S with all occurrences of substring
old replaced by new.  If the optional argument count is
given, only the first count occurrences are replaced.
[/docstring]

Notice the "all occurrences of substring" part. Strings are immutable,
so there isn't really any replace, either way you are going to be
creating a new string. So the best way to do what (I think) you want
to do is this...

[code]
>>> s = '12345 4343 454'
>>> s = s[:-1]+'r'
>>> s
'12345 4343 45r'
[/code]

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Re: Can I use Python instead of Joomla?

[walterbyrd]

On May 2, 5:38 pm, Bruno Desthuilliers
<[EMAIL PROTECTED]> wrote:

> You're mixing apples, fishes, and cars here. Joomla is a content
> management system, Django a framework and Python a language.

Yes, I know, but they are all ways to create a website. If I wanted a
site which included galleries, forums, etc. and I didn't want to re-
invent the wheel, I could:

1) Use joomla or drupal, and possible end up "fighting the framework"
to get just what I want.

2) Cooble together a web-site with various scripts, either developed
by others, or myself.

I would like to work with django, and include some python stuff. But,
the PHP environments seem to have a much richer assortment of pre-
written scripts.

If I want to include my own applications, I could develop those apps
with a popular PHP MVC called "CakePHP" and include those into joomla
or drupal. I don't know if there is anything like that with Python
development.

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Re: newbie: copy base class fields

[Jerry Hill]

On 3 May 2007 07:14:04 -0700, tmp123 <[EMAIL PROTECTED]> wrote:
> Of course, it is not an option to copy one by one all the fields of
> class A inside the __init__ of B.

Is it okay to copy them all at once?  Like this:

class B(A):
def __init__(self, a):
self.__dict__.update(a.__dict__)
self.v2 = 2

That will copy all of the attributes of instance a into the new instance.

-- 
Jerry
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Re: 32 OS on 64-bit machine

[MrJean1]

$ python
Python 2.5c1 (r25c1:51305, Sep 12 2006, 08:39:50)
[GCC 3.2.3 20030502 (Red Hat Linux 3.2.3-54)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import platform
>>> print platform.processor()
x86_64
>>> print platform.architecture()
('64bit', 'ELF')
>>>

This is an Opteron box running 64-bit RedHat Enterprise Lunix release
3 update 7, not 32-bit.

$ uname -a
Linux localhost.localdomain 2.4.21-40.EL #1 Thu Feb 2 22:20:41 EST
2006 x86_64 x86_64 x86_64 GNU/Linux

/Jean Brouwers



On May 3, 2:10 am, SamG <[EMAIL PROTECTED]> wrote:
> If anyone has a x86_64 machine and is running a 32bit OS on top of
> that could you tell me what output would you get for the following
> program
>
> #==
> import platform
> print platform.processor()
> print platform.architecture()
> #==
>
> Thanks in advance
> : )~

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Re: ignorance and intolerance in computing communties

[Ignoramus12143]

It is not that difficult to those of us who know math. Obvious analogy
to the function below exists in 'perl'. 

double vectorAngle( double x, double y ) 
{
  double r2 = x*x+y*y;
  if( r2 == 0 ) return -10; // error case

  int quadrant = x > 0 ? (y >= 0 : 0 : 3) : (y > 0 ? 1 : 2);

  return pi/2 * quadrant + asin( abs(y)/sqrt( r2 ) );
} 
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Re: Microsoft's Dynamic Languages Runtime (DLR)

[Alex Martelli]

Duncan Booth <[EMAIL PROTECTED]> wrote:

> means in pure Python code the string has python methods, but in Python
> using the CLR it gains the CLR methods. Presumably in Ruby code it looks
> like a Ruby string and so on, but (and this is what's new) it is the same
> object, not a bunch of language specific wrappers around the string type.

So is it changeable (making Python code using it deeply unhappy) or
unchangeable (making Ruby or Javascript code similarly unhappy)?  The
idea of just having one string type across languages is fascinating, but
I'm not sure it can work as stated due to different semantics such as
mutable vs immutable...


Alex
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_csv.Error: string with NUL bytes

[fscked]

Anyone have an idea of what I might do to fix this? I have googled adn
can only find some random conversations about it that doesn't make
sense to me.

I am basically reading in a csv file to create an xml and get this
error.

I don't see any empty values in any fields or anything...

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Re: My Python annoyances

[kyosohma]

On May 3, 9:27 am, Paul Boddie <[EMAIL PROTECTED]> wrote:
> On 3 Mai, 15:49, Ben Collver <[EMAIL PROTECTED]> wrote:
>
> > I rewrote my code in Python and I found myself running into many of the
> > same hassles that I run into with other languages: inaccurate and
> > incomplete documentation, a maze of little platform-specific quirks to
> > work around in the base classes, and a macho community of users.
>
> I'm sorry to hear about that. If by "macho" you mean people who insist
> that things are good enough as they are, and that newcomers should
> themselves adapt to whatever they may discover, instead of things
> being improved so that they are more intuitive and reliable for
> newcomers and experienced developers alike, then I'd certainly be
> interested in undermining that culture.
>
> > The python web site recommended Dive Into Python, so I learned by
> > reading that.  It has several examples that don't work because the
> > Python base classes have changed behavior.  I should have taken that as
> > lesson.
>
> Really Dive Into Python should be a sufficient guide, and it was
> perhaps the best introduction to the language when it was written. It
> is very unfortunate that the language has changed in a number of ways
> (and exhibits continued change) whilst effort into documenting what is
> already there remains neglected amongst the people making all the
> changes.
>
> > I tried to write portable Python code.  The zlib CRC function returned
> > different results on architectures between 32 bit and 64 bit
> > architectures.  I filed a bug report.  It was closed, without a comment
> > from the person who closed it.  I get the unspoken message: bug reports
> > are not welcome.
>
> Can you provide the bug identifier? Bug reports are generally welcome,
> and despite complaints about patch reviews, I've found people
> reviewing things I've submitted.
>
> > I installed Cygwin on a Windows machine.  I try to quit from an
> > interactive Python session.  It tells me that on my platform, I must
> > press Control-Z to exit.  I press Control-Z and it makes Python a
> > background process.
>
> Yes, Ctrl-Z exits Python in the standard Windows edition. Since Cygwin
> provides a POSIX-like environment, Ctrl-D should be used instead. If
> the documentation is wrong, a bug report or patch should be filed
> against the software.
>
> > I tried to use the XML.minidom.  The documentation here is minimal as
> > well.  So I read up on other web sites.  It turns out that the interface
> > has changed quite a bit from the documentation I found on other web
> > sites.  Where are the much loved docstrings?  In 2.3 minidom, they are
> > sparse and cryptic.
>
> I really don't know what to say about the PyXML/xmlcore situation. I
> don't use ElementTree and hardly use PyXML or minidom, but something
> really should have been done about the maintenance of the established
> libraries rather than declaring them as legacy items and pretending
> that they don't exist.
>
> > Between 2.4 and 2.5, tempfile returns a different type of object.  My
> > code cannot have a single test, it has check for type(obj) == file or
> > obj.__class__ == tempfile._TemporaryFileWrapper.
>
> Try using isinstance or relying on "deeper" knowledge of how the
> object will be used.
>
> > I decided to make a tkinter front-end for a Python program.  I decided
> > to go with tkinter because it is included with many Python
> > installations, so it maximizes the chance for my program to run out of
> > the box.
>
> > The tkinter documentation on the Python site mainly consists of loose
> > notes and links to other sites.  The documentation on other sites is
> > great, if you already know how to use tkinter.  I ran into bugs in
> > TkAqua which make the grid layout unusable for me.  So I will need to
> > ask potential users to install Xcode, X11, and mac ports, if they want
> > to run my program.
>
> Take a look at the python.org Wiki for links to other resources on
> Tkinter:
>
> http://wiki.python.org/moin/TkInter
>
> Or consider other graphical frameworks:
>
> http://wiki.python.org/moin/GuiProgramming
>
> > In short, there is plenty of room for improvement.  Admittedly these are
> > not problems with the language definition.  But I downloaded a Python
> > distribution, and the problems are Python specific.
>
> My opinions, already expressed, include the observation that the core
> development community is more interested in extending the language
> than in strengthening the standard library (and its documentation). It
> should be noted that the proposed standard library reorganisation,
> which is a very conservative affair, has actually been postponed until
> after the release of Python 3.0a1 according to a message I read
> recently. And yet, if you read people's lists about what they "hate"
> about Python (amongst actual users of Python), guess which thing
> almost always comes up?
>
> http://www.google.com/search?q=%22things+I+hate+about+Python%22
>
> Paul

I agr

Re: How to replace the last (and only last) character in a string?

[Grant Edwards]

On 2007-05-03, Johny <[EMAIL PROTECTED]> wrote:
> Let's suppose
> s='12345 4343 454'
> How can I replace the last '4' character?

>>> s = '12345 4343 454'
>>> s = s[:-1] + 'X'
>>> s
'12345 4343 45X'

-- 
Grant Edwards   grante Yow! Where's th' DAFFY
  at   DUCK EXHIBIT??
   visi.com
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Re: problem with meteo datas

[Paul McGuire]

On May 3, 4:08 am, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote:
> Messaggio originale
> Da: [EMAIL PROTECTED]
> Data: 3-mag-2007
> 10.02
> A: <[EMAIL PROTECTED]>
> Ogg: problem with meteo datas
>
> Hello,
> I'm Peter and I'm new in python codying and I'm using parsying
> to
> extract data from one meteo Arpege file.
> This file is long file and
> it's composed by word and number arguments like this:
>
> GRILLE EURAT5
> Coin Nord-Ouest : 46.50/ 0.50  Coin Sud-Est : 44.50/ 2.50
> MODELE PA
> PARAMETRE P
>  NIVEAU MER 0 ECHEANCE 0.0 DATE 2002030400 NB_POINTS
> 25
>1020.911020.871020.911021.05 1021.13
>
> 1020.071020.271020.491020.91 1021.15
>1019.37
> 1019.651019.791020.53 1020.77
>1018.731018.89
> 1019.191019.83 1020.81
>1018.051018.191018.75
> 1019.55 1020.27
>  NIVEAU MER 0 ECHEANCE 3.0 DATE 2002030400
> NB_POINTS 25
>1019.801019.781019.921020.18 1020.34
>1018.941019.241019.541020.08 1020.32
>1018.24
> 1018.641018.941019.84 1019.98
>1017.481017.88
> 1018.281018.98 1019.98
>1016.621017.081017.66
> 1018.26 1018.34
> NIVEAU MER 0 ECHEANCE 6.0 DATE 2002030400
> NB_POINTS 25
>1019.371019.391019.57  
> 

Peter -

Your first attempt at pyparsing is a good step - just get something
working!  You've got a first pattern working that detects and extracts
all decimal numbers.  (I think you are the first one to model a
decimal number as a delimited list of integers with "." as the
delimiter.)

The next step is to start looking for some higher-level text groups or
patterns.  Your data is well structured as an n-level hierarchy, that
looks to me like:

- model+parameter
  - level
- nb_points
  - level
- nb_points
  - level
- nb_points
- model+parameter
  - level
- nb_points
  - level
- nb_points
  ...

You can build your pyparsing grammar from the ground up, first to
parse individual terminal expressions (such as decimal numbers which
you already have), and then buld up to more and more complex
structures within your data.

The first thing to change about your approach is to start looking at
this data as a whole, instead of line by line.  Instead of extracting
this first line of 5 point values:

   1020.911020.871020.911021.05 1021.13

look at this as one piece of a larger structure, a data set for a
given niveau:

 NIVEAU MER 0 ECHEANCE 0.0 DATE 2002030400 NB_POINTS 25
   1020.911020.871020.911021.05 1021.13
   1020.071020.271020.491020.91 1021.15
   1019.371019.651019.791020.53 1020.77
   1018.731018.891019.191019.83 1020.81
   1018.051018.191018.751019.55 1020.27

So let's create a parser for this structure that is the next step up
in the data hierarchy.

NIVEAU, ECHEANCE, DATE, and NB_POINTS are helpful labels for marking
the data, but not really important to return in the parsed results.
So I will start by creating definitions for these labels which will
parse them, but leave out (suppress) them from the returned data:

NIVEAU, ECHEANCE, DATE, NB_POINTS = \
map(Suppress,"NIVEAU ECHEANCE DATE NB_POINTS"
 .split())

You stated that there are several options for what a niveau identifier
can look like, so this should be its own expression:

niveau_ref = Literal("MER 0") | Literal("SOL 0") | \
Combine(Literal("HAUTEUR ") + eurodec)

(I defined eurodec as you defined dec, but with a comma delimiter.)

I'll also define a dateString as a Word(nums) of exactly 14 digits,
but you can come back to this later and refine this as you like (build
in parse-time conversion for example).

dateString = Word(nums,exact=14)

And then you can create an expression for a full niveau's-worth of
data:

niveau = NIVEAU + niveau_ref +
 ECHEANCE + dec +
 DATE + dateString +
 NB_POINTS + countedArray(dec)

Notice that we can use the pyparsing built-in countedArray to capture
all of the data point values, since NB_POINTS gives the number of
points to follow, and these are followed immediately by the points
themselves.  Pyparsing will convert all of these into a nice n-element
list for us.

You astutely requested that these values should be accessible like
values in a dict, so we do this in pyparsing by adding results names:

niveau = NIVEAU + niveau_ref.setResultsName("niveau") + \
 ECHEANCE + dec.setResultsName("echeance") + \
 DATE + dateString.setResultsName("date") + \
 NB_POINTS + countedArray(dec).setResultsName("nb_points")

Now you should be able to search through your data file, extracting
all of the niveaux (?) and their related data:

f=file("arqal-Arpege.00", "r")
fdata = f.read() # read the entire file, instead of going line-by-
line
for n in niveau.searchString(fdata):
print n.niveau

Article on wxPython ToolKit for Mac OS X

[miah_gbg]

Hi there!

Just wanted to let people know in this group that I have recently
(April 24th) published an introductory article on wxPython and Mac OS
X. It is available here: http://www.macdevcenter.com/

Hope someone finds it useful.

Regards,

Jeremiah

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Re: ignorance and intolerance in computing communties

[Frank Buss]

Xah Lee wrote:

> I'm still interested, if someone would show the source code, of how
> Perl, Python, or Lisp or Java, implement the function that finds the
> angle of a complex number.

So you have forgotten to cross-post to comp.lang.java :-)

I think at least for strict floating-point Java uses the netlib: 

http://www.netlib.org/fdlibm/e_atan2.c

For normal floating-point calculations I assume Java uses something like
FPATAN on x86'er computers:

http://www.ews.uiuc.edu/~cjiang/reference/vc107.htm

But you can download the source code of the JVM to verify it yourself:

https://openjdk.dev.java.net/

-- 
Frank Buss, [EMAIL PROTECTED]
http://www.frank-buss.de, http://www.it4-systems.de
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Re: Any way to refactor this?

[John Salerno]

Steven D'Aprano wrote:

> Bruno's code has two micro-optimizations. The first is to avoid
> looking up visual.cylinder each time (six times the number of loops) and
> instead only look it up once.

Oh I see. I was thinking the optimization had something to do with 
*calling* the function less often, but that's different from the actual 
lookup I suppose. :)
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Organizing code - import question

[Brian Blais]

Hello,

I am trying to organize some of my code, and am having a little trouble with 
the 
import logic.  I find I often have something like:

MyPackage/
Part1/ # wants to use functions in Common/
  __init__.py  # does "from MyClass1 import MyClass1", etc,...
  MyClass1.py
  MyClass1a.py  # depends on MyClass1
  MyClass1b.py  # depends on MyClass1

Part2/  # wants to use functions in Common/
  __init__.py  # does "from MyClass2 import MyClass2", etc,...
  MyClass2.py   # depends on MyClass1 also, such as containing a list of 
MyClass1
  MyClass2a.py  # depends on MyClass2
  MyClass2b.py  # depends on MyClass2

Common/
  __init__.py  # does "import fun1,fun2", etc,...
  fun1.py
  fun2.py



So I have some common utilities that both classes want to access, and I have 
two 
separate class definitions, of which one depends on the other.  In MyClass2.py, 
I 
can't seem to do:

import Common.fun1

or

from Part1.MyClass1 import MyClass1


I think I am either missing some syntax/path thing, or I am thinking about the 
organization in entirely the wrong way.  Currently, as a hack, I am simply 
copying 
the code from Common into the other two directories, and making a link to the 
Part1 
directory in the Part2 so I can import it.  There must be a better way, yes?


thanks,

Brian Blais

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  http://web.bryant.edu/~bblais
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New York City Python Users Group Meeting - Tuesday May 8th

[John Clark]

Greetings!

The next New York City Python Users Group meeting is this Tuesday, May 8th,
6:30pm at at the Millennium Partners office at 666 Fifth Avenue (53rd St.
and 5th Ave.) on the 8th Floor. We welcome all those in the NYC area who are
interested in Python to attend. However, we need a list of first and last
names to give to building security to make sure you can gain access to the
building. RSVP to [EMAIL PROTECTED] to add your name to the list. 

More information can be found on the yahoo group page:

 
http://tech.groups.yahoo.com/group/nycpython/

Hope to see you there!

-John

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Re: Firefighters at the site of WTC7 "Move away the building is going to blow up, get back the building is going to blow up."

[malibu]

On May 3, 12:18 am, Eric Gisse <[EMAIL PROTECTED]> wrote:
> On May 2, 10:14 pm, malibu <[EMAIL PROTECTED]> wrote:
>
> > On May 2, 9:46 pm, Eric Gisse <[EMAIL PROTECTED]> wrote:
>
> > > On May 2, 7:10 pm, Midex <[EMAIL PROTECTED]> wrote:
>
> > > [...]
>
> > > I guess the explanation that people were looking at the building and
> > > watching its' structure deform is too rational.
>
> > Also, that was a Larry Silverstein impostor who
> > said they were going to 'pull it'.
>
> ...maybe if you read the context, it would make a little more rational
> sense. Fucking nutter.
>
> > And the only reason he took out huge amounts
> > of extra insurance on the buildings two months
> > before this happened was because of global
> > warming, because we all know a little bit of heat
> > will bring down steel buildings.
>
> A little heat and major structural damage.
>
>
>
> > John

Gee, I'll bet all those explosions in the
subfloors of WTC1 + WTC2 did some
structural damage also!

Come to think of it.

When the firefighters got there, all the glass
on the street floors was blown out.

Shock wave from the plane hitting
80 floors up?

Janitors and such coming up from the basement levels
bleeding and dazed.

Jet fuel trickling down the elevator shafts being ignited
by someone's roach? And exploding?
Severing the three-foot thick steel columns?
All  5 dozen of them?
(That's mighty fine primo, pardner!)

Your brain got structural damage?
Dropped on your head as a kid?

Don't put that fire iron too close
to the flames, honey. It'll melt
and deform!

John

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Re: Organizing code - import question

[Carlos Hanson]

On May 3, 8:41 am, Brian Blais <[EMAIL PROTECTED]> wrote:
> Hello,
>
> I am trying to organize some of my code, and am having a little trouble with 
> the
> import logic.  I find I often have something like:
>
> MyPackage/
> Part1/ # wants to use functions in Common/
>   __init__.py  # does "from MyClass1 import MyClass1", etc,...
>   MyClass1.py
>   MyClass1a.py  # depends on MyClass1
>   MyClass1b.py  # depends on MyClass1
>
> Part2/  # wants to use functions in Common/
>   __init__.py  # does "from MyClass2 import MyClass2", etc,...
>   MyClass2.py   # depends on MyClass1 also, such as containing a list of 
> MyClass1
>   MyClass2a.py  # depends on MyClass2
>   MyClass2b.py  # depends on MyClass2
>
> Common/
>   __init__.py  # does "import fun1,fun2", etc,...
>   fun1.py
>   fun2.py
>
> So I have some common utilities that both classes want to access, and I have 
> two
> separate class definitions, of which one depends on the other.  In 
> MyClass2.py, I
> can't seem to do:
>
> import Common.fun1
>
> or
>
> from Part1.MyClass1 import MyClass1
>
> I think I am either missing some syntax/path thing, or I am thinking about the
> organization in entirely the wrong way.  Currently, as a hack, I am simply 
> copying
> the code from Common into the other two directories, and making a link to the 
> Part1
> directory in the Part2 so I can import it.  There must be a better way, yes?
>
> thanks,
>
> Brian Blais
>
> --
> -
>
>   [EMAIL PROTECTED]
>  http://web.bryant.edu/~bblais

It looks like you need __init__.py in MyPackage.  Then you can import
starting with MyPackage.  For example, you might use one of the
following:

  import MyPackage
  from MyPackage.Common import *
  etc

--
Carlos Hanson

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Re: ignorance and intolerance in computing communties

[Roel Schroeven]

Xah Lee schreef:
> Xah Lee wrote:
> «
> ...
> “Ignorance And Intolerance In Online Computing Communities”
> http://xahlee.org/Netiquette_dir/ignorance_intolerance.html
> 
> ...  As i have indicated in my post, it is non-trivial to implement a
> function that returns the positive angle of a vector
> »
> 
> I have now coded this. I think it is probably the most algorithmically
> optimal, and rather much simpler than i originally thought. Here's the
> Mathematica code:
> 
> vectorAngle[{a1_, a2_}] := Module[{x, y},
> {x, y} = {a1, a2}/Sqrt[a1^2 + a2^2] // N;
> If[x == 0 && y == 0, "fucked",
>   If[x == 0, [EMAIL PROTECTED] === 1, π/2, -π/2],
> If[y == 0, [EMAIL PROTECTED] === 1, 0, π],
>   [EMAIL PROTECTED] === 1, [EMAIL PROTECTED], 2 π - [EMAIL PROTECTED]
>   ]
> ]
>   ]
> ]

I might be wrong of course, but can't you just use atan2? Only problem 
is that it returns negative angles for quadrants 3 and 4, but that is 
easily solved. In Python:

from math import atan2, pi, fmod
def vectorAngle(x, y):
 return fmod(atan2(y, x) + 2*pi, 2*pi)

No conditionals in sight.

-- 
If I have been able to see further, it was only because I stood
on the shoulders of giants.  -- Isaac Newton

Roel Schroeven
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Re: pyscripter to slow

[Larry Bates]

Gigs_ wrote:
> I have some problem with pyscripter.
> Sometimes when I type pyscripter get to slow (i type 10 chars and
> pyscripter needs 5 seconds to complete this). This happens mostly on
> deleting some chars.
> 
> It is very frustrating.
> 
> Does someone have same situation?
> 
> btw
> My comp is
> 
> amd athlon x2 4000 2mb cache
> sapphire am2rd580adv 3200 ati chipset
> 2GB corsair xm2
> sapphire x1650 pro 256mb
> 
> windows vista

I see this when pyscripter is trying to resolve autocomplete to show
me the underlying arguments to a function.  You should probably post
back to their website instead of here.

-Larry
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Re: _csv.Error: string with NUL bytes

[Larry Bates]

fscked wrote:
> Anyone have an idea of what I might do to fix this? I have googled adn
> can only find some random conversations about it that doesn't make
> sense to me.
> 
> I am basically reading in a csv file to create an xml and get this
> error.
> 
> I don't see any empty values in any fields or anything...
> 

You really should post some code and the actual traceback error your
get for us to help.  I suspect that you have an ill-formed record in
your CSV file.  If you can't control that, you may have to write your
own CSV dialect parser.

-Larry
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Re: _csv.Error: string with NUL bytes

[fscked]

On May 3, 9:11 am, Larry Bates <[EMAIL PROTECTED]> wrote:
> fscked wrote:
> > Anyone have an idea of what I might do to fix this? I have googled adn
> > can only find some random conversations about it that doesn't make
> > sense to me.
>
> > I am basically reading in a csv file to create an xml and get this
> > error.
>
> > I don't see any empty values in any fields or anything...
>
> You really should post some code and the actual traceback error your
> get for us to help.  I suspect that you have an ill-formed record in
> your CSV file.  If you can't control that, you may have to write your
> own CSV dialect parser.
>
> -Larry

Certainly, here is the code:

import os,sys
import csv
from elementtree.ElementTree import Element, SubElement, ElementTree

def indent(elem, level=0):
i = "\n" + level*"  "
if len(elem):
if not elem.text or not elem.text.strip():
elem.text = i + "  "
for elem in elem:
indent(elem, level+1)
if not elem.tail or not elem.tail.strip():
elem.tail = i
else:
if level and (not elem.tail or not elem.tail.strip()):
elem.tail = i

root = Element("{Boxes}boxes")
myfile = open('test.csv', 'rb')
csvreader = csv.reader(myfile)

for boxid, mac, activated, hw_ver, sw_ver, heartbeat, name, address,
phone, country, city, in csvreader:
mainbox = SubElement(root, "{Boxes}box")
mainbox.attrib["city"] = city
mainbox.attrib["country"] = country
mainbox.attrib["phone"] = phone
mainbox.attrib["address"] = address
mainbox.attrib["name"] = name
mainbox.attrib["pl_heartbeat"] = heartbeat
mainbox.attrib["sw_ver"] = sw_ver
mainbox.attrib["hw_ver"] = hw_ver
mainbox.attrib["date_activated"] = activated
mainbox.attrib["mac_address"] = mac
mainbox.attrib["boxid"] = boxid

indent(root)

ElementTree(root).write('test.xml', encoding='UTF-8')

The traceback is as follows:

Traceback (most recent call last):
  File "createXMLPackage.py", line 35, in ?
for boxid, mac, activated, hw_ver, sw_ver, heartbeat, name,
address, phone, country, city, in csvreader:
_csv.Error: string with NUL bytes
Exit code: 1 , 0001h

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