On a recent trawl of the internet for some Python books, I came across "Python
Interview Questions: Python Certification Review" by ITCOOKBOOK.COM
http://www.itcookbook.com/store/index.php?main_page=product_info&products_id=15
Has anyone used this, or even one of the related books?
While I c
On Wed, 2009-03-04 at 18:02 +, mattia wrote:
> ri = randint(0, len(rw) - 1)
> print("Random index:", rw[ri], ", value:", pop[rw[ri]])
you probably want random.choice(rw)
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d a wrapper to files on disk - then it's just your
OS's limits that hold it back - so python is turing/register complete.
Tim Wintle
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[email protected] wrote:
> Hello All,
> I have a requirement where I've to access folders with
> path lengths >255 ( Windows only supports 255). To do this I've
> created junction points for the folders whose length is > 255. The
problem is my python script is unable to recognize
Maybe I'm missing something obvious here
def A (...):
#set a bunch of variables
x = 1
b = 2
...
Do something with them
def B (...):
#set the same bunch of variables
x = 1
b = 2
...
Do something with them
I want to apply DRY, and extract out the common setting of these variable
As Diez suggests, if you don't want to litter your global namespace, use
a class:
class Foo:
x = 1
b = 2
@classmethod
def A(cls, *args, **kwargs):
do_stuff_with(Foo.x, Foo.b, args, kwargs)
@classmethod
def B(cls,*args, **kwargs):
do_other_stuff_with(Foo.x, Fo
t's not the way
to get interest in your language.
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Limin Fu wrote:
> To Tim Greer and others:
>
> Some people may think this kind of announcement are off topic in a
> group for another language. This is not exactly true. This is still
> about programming, there are so many programmers out there, who knows
> if there would be s
not necessary (but still legal). That seems
to me to work pretty cleanly.
--
Tim Rowe
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On Sat, 2009-03-07 at 12:53 -0800, Sapote wrote:
> I have an incrementing variable disc_num that I could insert in the
> line below to create discspanisoX.iso where X is incrementing...
>
> burn_cmd = "mkisofs -udf -o /home/donkey/discspaniso.iso -graft-
> points --path-list %s" %(temp_list)
On Sat, 2009-03-07 at 21:25 +, Tim Wintle wrote:
> burn_cmd = "mkisofs -udf -o /home/donkey/discspaniso%d.iso
> -graft-points --path-list %s" %(x,temp_list)
obviously I meant to say
burn_cmd = "mkisofs -udf -o /home/donkey/discspaniso%
d.iso-graft-points --pat
i have a program that essentially loops through a textfile file thats
about 800 MB in size containing tab separated data... my program
parses this file and stores its fields in a dictionary of lists.
for line in file:
split_values = line.strip().split('\t')
# do stuff with split_values
curre
Gtk?
> Good job python-dev team.
And especially Guilherme Polo for doing all the tough work as far as I
tell from the issue and the commit logs.
Am I right this was a Google Summer of Code project? If so then thanks
to Google as well for sponsoring it.
Tim Wintle
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Tim Rowe wrote:
>
>I don't think the article is right that "it's silly to have some
>expression/statement groupings indentation based and some grouped by
>enclosing tokens" -- provided it's done right. The OCAML-based
>language F# accepts OCAML enclosing
#x27;s JVM
for 6 and 5, and IBM's JDK for Java 5 all running.
Similarly, on various machines I use CPython 2.3, 2.4, 2.5, 2.6 and
Jython 2.2 for various reasons - and I'm certainly planning on using
PyPy a large amount once it's stable.
I used the Beta of 3.0, but to be honest I ha
osting and arguing with people. That is
why people probably kill filed you (there's no "ban" feature for usenet
itself). I'm going to go out on a limb here and say that you're not as
important as you like to think yourself. Into the killfile you go.
--
Tim Greer, CEO/Foun
r vitriol, and being pleasant to
the unwashed ignorant masses, but that's what it takes. If you don't CARE
whether anyone reads your words, then please feel free to continue with
your current behaviors.
--
Tim Roberts, [email protected]
Providenza & Boekelheide, Inc.
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http://mail
(obviously doesn't change how "environmentally harmful" something is)
Tim Wintle
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Steven D'Aprano wrote:
per wrote:
currently, this is very slow in python, even if all i do is break up
each line using split()
**
and store its values in a dictionary,
**
indexing by one of the tab separated values in the file.
If that's the problem, the sol
Gabriel Genellina wrote:
En Fri, 06 Mar 2009 06:52:00 -0200, escribió:
I have succeeded in building Python 2.6.1 from source under Windows XP
by running Visual C++ 2008 Express on the PCbuild/pcbuild.sln file
both from the Visual C++ application as well as from the commandline
[...]
I would li
Diez B. Roggisch wrote:
Hans Larsen schrieb:
Could you help me ?
How could I "take" an elemment from a set or a frozenset
.-) ?
From a string (unicode? Python<3), or from a
tuple,or from a list: Element by index or slice.
From a dict: by k
Tim Golden wrote:
Diez B. Roggisch wrote:
Hans Larsen schrieb:
Could you help me ?
How could I "take" an elemment from a set or a frozenset
.-) ?
From a string (unicode? Python<3), or from a
tuple,or from a list: Element by i
ET wrote:
Using the 'with' keyword didn't work...
Just an aside here for any multiprocessing maintainers
watching ;) . I expect that the "didn't work" here
refers to this bug:
http://bugs.python.org/issue5261
Altho' if the OP cares to clarify, it might be something
else.
TJG
--
http://mail.
've got is the long
shutdown times, which is caused by backing up a copy of _Everything_ to
disk, so that upgrades can happen cleanly - sure that's going to be
fixed though.
Startup time is a bit slow too, but it's designed to be left open all
the time, and it's fairly zippy once it&#
Martin v. Löwis wrote:
In addition, the CVS version of pywin32 which I built in
order to run the msi.py script has a small bug in genpy
which prevents it from generating COM support in the way
in which msi.py does it.
I'm using Python 2.4 to run msi.py; that has always worked
fine for me.
Int
Scott David Daniels wrote:
Tim Golden wrote:
... Anyhow, at the end I have a working Python 2.7a0 running
under Windows.
Do you mean 3.1a0? As far as I know, 2.7a0 requires the use
of the time machine, as it is expected to be 3 months out.
No; 2.7a0 is the version number of the svn HEAD
Martin v. Löwis wrote:
What does the merge do? I can't find mention of it
in the docs.
It merges the msvcrt merge module into the installer (and then
monkey patches it, to revert the msm decision of setting
ALLUSERS). I tried to integrate it originally as a step
after creating the msi. Unfortun
Martin v. Löwis wrote:
merge.py attempts to import config.py but I can't find it...
Just create an empty one.
Won't quite work: merge tries to find full_current_version
which is determined (if None) in msi.py from the rather
involved current version stuff.
I'm going to give up on this for to
ot;, pos)]
'http://youtube.example.com/login.aspx'
Find the first single quote, then get the character range between that
and the next single quote.
Tim
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o that thinks he's incredibly important
and interesting, and just ignores people's requests for him to stop
cross posting. In the end, I've seen worse posters than Xah Lee, but
he's in my killfile.
--
Tim Greer, CEO/Founder/CTO, BurlyHost.com, Inc.
Shared Hosting, Reseller Ho
Martin v. Löwis wrote:
Just create an empty one.
Won't quite work: merge tries to find full_current_version
which is determined (if None) in msi.py from the rather
involved current version stuff.
Only if you don't pass an msi file on the command line. So
I recommend that you do that.
OK.
On Mon, 2009-03-09 at 11:19 +, Lie Ryan wrote:
> Certainly. A programmer that only knows one language would be too
> limited. Try as many programming language as you can, and especially
> look for programming languages that have "obscenely different" paradigm
> than the language you already
to handle 100 hits a second, then CGI is not
appropriate, but let's be honest: the web sites that most of us produce
have to struggle under a devastating load of about 100 hits a day.
At that level of load, CGI is perfectly workable, and it's certainly the
easiest of the choices for develop
Steven D'Aprano wrote:
Tim Chase wrote:
If the constants don't actually share any conceptual commonality,
then SteveH is right, that they really should just be globals.
Surely that's backwards? If the constants don't share any conceptual
commonality, they should be kep
low learning curve -- a reasonable programmer
can become productive in Python very quickly. For one programmer's
experience of learning Python have a look at
http://www.python.org/about/success/esr/ (although I grant that Eric
Raymond might count slightly higher than just a /reasona
Hello,
is there a scipt or any other possibility to create a list of all
undocumente functions (without docstrings) within a package or at least
module?
Thanks for your help in advance.
Regards,
Timmie
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t
fractions that can be expressed exactly in decimal can end up as
recurring decimals in binary. 0.8 looks nice and tidy, but in binary
(if I get this right) it's 0.1100110011001100..., recurring ad
infinitum. The computer has to truncate it somewhere.
--
Tim Rowe
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Thanks so much. I will try this.
May you also have a look at:
creating a list of all imported modules
http://www.nabble.com/creating-a-list-of-all-imported-modules-to22418347.html
Do you have an idea?
Thanks & regards,
Timmie
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personal blog medium, so all of his thoughts and feelings are
continually posted in places they don't belong -- and he doesn't care).
--
Tim Greer, CEO/Founder/CTO, BurlyHost.com, Inc.
Shared Hosting, Reseller Hosting, Dedicated & Semi-Dedicated servers
and Custom Hosting. 24/7 support,
t seem to know much about Perl or Python
and he posts a lisp post to these groups? Sounds like he indeed
doesn't know what LISP is).
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Tim Greer, CEO/Founder/CTO, BurlyHost.com, Inc.
Shared Hosting, Reseller Hosting, Dedicated & Semi-Dedicated servers
and Custom Hosting. 24/7 support,
I would be thankfukl if you answer to the following easy question:
How can I read from a .csv file in Python and save the data in a array
or dictionary.
I suspect your teacher expects you to use the "csv" module[1] in
the standard library.
-tkc
[1]
http://docs.python.org/library/csv.html
Tim Golden wrote:
Martin v. Löwis wrote:
Just create an empty one.
Won't quite work: merge tries to find full_current_version
which is determined (if None) in msi.py from the rather
involved current version stuff.
Only if you don't pass an msi file on the command line. So
I reco
Hello,
how do I create a list of all modules imported by my module/script and
which are present in the namespace?
I am looking for something like %who in Ipython.
My aim is to create a file for the documentation that shows all
dependencies of my script on external (3rd party) libraries.
T
o groups that hold no relevance, as if they
are your personal blog. Usenet is not a blog.
> Also, thanks to many supporters over the past years.
I'm sure.
> Truly Your Superior,
I'd think anyone superior to me would understand how to use usenet
properly.
I'm being
Martin v. Löwis wrote:
AFAICT, it only complained about errors in merging _Validation.
I'm not sure whether I get the same errors (I would have to
check); those errors can safely be ignored.
Good.
I also see that it fails to add custom actions into
InstallExecuteSequence. I find that puzzling
[email protected] wrote:
4 / 5.0
0.84
0.8 * 5
4.0
Start here:
http://docs.python.org/tutorial/floatingpoint.html
Play with these:
>>> 4/5.0
0.84
>>> print 4/5.0
0.8
>>> print repr(4/5.0)
0.84
>>> str(4/5.0)
'0.8'
>>> repr(4/5.0)
'0.8000
Martin v. Löwis wrote:
BTW what are your feelings on a patch to msi.py to change the
names of the directories it's looking for to pick up the Tk
licenses? It's a bit of a grey area since the only "canonical"
reference I can find is the externals checkout from within
tools\buildbot: you might as w
On Mon, 2009-03-09 at 21:28 -0700, Luis Gonzalez wrote:
> C'mon guys, Xha Lee always wins, because fools like you get mad at him
> instead of ignoring him.
Here here!
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[email protected] wrote:
Given a webpage test.html that has a form with a cgi script, how can
you determine inside the cgi script the name of the webpage that
invoked the script?
I have many different html pages that use a common cgi script for form
processing and want to determine the n
Martin v. Löwis wrote:
First, it relies on config.py whose existence msi.py
optionally ignores.
Feel free to create a patch for that.
http://bugs.python.org/issue5467
TJG
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Martin v. Löwis wrote:
I also see that it fails to add custom actions into
InstallExecuteSequence. I find that puzzling - apparently,
it tries to merge the twice. Are you sure you didn't run it
twice? It will certainly fail the second time.
Just to confirm: I'm certainly only running this once
Tim Golden wrote:
However, the .msi installs (and Python
runs) without issue on a virgin VirtualXP. And it passes the basic test
suite ok.
I lied. test_zipfile fails because the new(ish) zipdir.zip doesn't
get carried across to the install. Patched in:
http://bugs.python.org/issue547
Scott David Daniels wrote:
Tim Golden wrote:
... Anyhow, at the end I have a working Python 2.7a0 running
under Windows.
Do you mean 3.1a0? As far as I know, 2.7a0 requires the use
of the time machine, as it is expected to be 3 months out.
If you do get an installer built, even having a
2009/3/8 Tim Roberts :
> Tim Rowe wrote:
>>
>>I don't think the article is right that "it's silly to have some
>>expression/statement groupings indentation based and some grouped by
>>enclosing tokens" -- provided it's done right. The OCAML-bas
[email protected] wrote:
Hello all,
I am writing a python script which has to access deep paths
then supported normally by the Windows OS (>255). So I am appending "\
\?\" to do so. But when I use the path in the above fashion with
os.chdir() it is unable to recognize my folder a
[email protected] wrote:
On Mar 11, 11:08 am, Tim Golden wrote:
[email protected] wrote:
Hello all,
I am writing a python script which has to access deep paths
then supported normally by the Windows OS (>255). So I am appending "\
\?\" to do so. But when I
Here is my code snippet which you will be interested in:
Indeed.
file = ur'\\?\C:\\TestDataSet\DeepPaths
\DeepPathLevel01\DeepPathLevel02\DeepPathLevel03\DeepPathLevel04\DeepPathLevel05\DeepPathLevel06\DeepPathLevel07\DeepPathLevel08\DeepPathLevel09\DeepPathLevel10\DeepPathLevel11\DeepPathLeve
[email protected] wrote:
On Mar 11, 5:19 pm, Tim Golden wrote:
Here is my code snippet which you will be interested in:
Indeed.
file = ur'\\?\C:\\TestDataSet\DeepPaths
\DeepPathLevel01\DeepPathLevel02\DeepPathLevel03\DeepPathLevel04\DeepPathLe
vel05\DeepPathLevel06\DeepPathLe
[email protected] wrote:
On Mar 11, 6:41 pm, Tim Golden wrote:
[email protected] wrote:
On Mar 11, 5:19 pm, Tim Golden wrote:
Here is my code snippet which you will be interested in:
Indeed.
file = ur'\\?\C:\\TestDataSet\DeepPaths
\DeepPathLevel01\DeepPathLe
[email protected] wrote:
Hello all,
I got a suspicion on the behaviour of os.rename
(src,dst).If the src is the path of a file and dst is a new filename
this os.rename() function is infact creating a new file with the dst
name in the current working directory and leaving the src
[email protected] wrote:
On Mar 11, 7:17 pm, Tim Golden wrote:
[email protected] wrote:
On Mar 11, 6:41 pm, Tim Golden wrote:
[email protected] wrote:
On Mar 11, 5:19 pm, Tim Golden wrote:
Here is my code snippet which you will be interested in:
Indeed.
file = ur
Hendrik van Rooyen wrote:
"Tim Golden" wrote:
Well, a little bit of experimentation shows that you can
*create* paths this deep (say, with os.mkdir). But you
can't actually set the current directory to it. So the
Is this also true if you try to go there by a succession
of
27;ll have to change it to something like '/'.join.
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Providenza & Boekelheide, Inc.
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>>> r"a\"
SyntaxError: EOL while scanning string literal (, line 1)
It seems the parser is interpreting the backslash as an escape
character in a raw string if the backslash is the last character.
Is this expected?
Yep...as documented[1], "even a raw string cannot end in an odd
number of b
Scott David Daniels wrote:
Tim Golden wrote:
Scott David Daniels wrote:
Tim Golden wrote:
... Anyhow, at the end I have a working Python 2.7a0 running
under Windows.
Do you mean 3.1a0? As far as I know, 2.7a0 requires the use
of the time machine, as it is expected to be 3 months out.
If
nate) problems caused by dot and comma
confusion..
--
Tim Rowe
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ness in
presenting those numbers. If "Finance users and non-professional
programmers find the locale approach to be frustrating, arcane and
non-obvious" then by all means propose a way of making it simpler and
clearer, but not a bodge that will increase the amount of bad software
in the w
in my_file:
chromosome = reference_dict.setdefault(chromosome,chromosome)
list_of_coordinates.append((chromosome,posn))
(or something like that)
Tim Wintle
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While Kurt gave some excellent ideas for using numpy, there were
some missing details in your original post that might help folks
come up with a "work smarter, not harder" solution.
Clearly, you're not loading it into memory just for giggles --
surely you're *doing* something with it once it's
I've had this trouble before, how do I find the details of how "in"
works in the documentation. E.g. the details of:-
if string in bigstring:
It's tough to find those generic keywords. It happens to be
documented a bit here:
http://docs.python.org/library/operator.html#operator.contain
Colin J. Williams wrote:
Piet van Oostrum wrote:
[email protected] (t) wrote:
t> I've had this trouble before, how do I find the details of how "in"
t> works in the documentation. E.g. the details of:-
t> if string in bigstring:
t> It gets a mention in the "if" section but not a l
jkn wrote:
On Mar 14, 7:00 am, Tim Golden wrote:
Well, this may not solve the OP's problem, but the current
(2.7a0) .chm file has a much better index for operators and
keywords. And "in" is in there. If you're interested in
comparing, there's a copy here:
http
Colin J. Williams wrote:
Tim Golden wrote:
Colin J. Williams wrote:
Piet van Oostrum wrote:
[email protected] (t) wrote:
t> I've had this trouble before, how do I find the details of how "in"
t> works in the documentation. E.g. the details of:-
t> if strin
John Nagle wrote:
Any idea when PyWin32 will be available for Python 3.x?
John Nagle
Release 213 is out already:
http://sourceforge.net/project/showfiles.php?group_id=78018&package_id=79063&release_id=661475
I think it's still considered a little bit beta. There have been
How can I convert the following string:
'AAR','ABZ','AGA','AHO','ALC','LEI','AOC',
EGC','SXF','BZR','BIQ','BLL','BHX','BLQ'
into this sequence:
['AAR','ABZ','AGA','AHO','ALC','LEI','AOC',
EGC','SXF','BZR','BIQ','BLL','BHX','BLQ']
Though several other options have come through:
>>> s = "'
John Nagle wrote:
That "wizard" won't even install unless Python 3.0 is "in the
registry", which apparently means "installed as the default Python".
No, it just means "installed somewhere". I have 6 different
versions of Python installed on this box. The choice of
which is "the default" is m
John Nagle wrote:
Well, of some other packages I use:
MySQLdb: "Python versions 2.3-2.5 are supported."
Ref: http://sourceforge.net/projects/mysql-python
M2Crypto: Latest version is for Python 2.6.
Ref: http://chandlerproject.org/bin/view/Projects/MeTooCrypto
Somebody
ike a Unix command line, resulting in
ls c:windowsystem32qqq.dll
--
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Providenza & Boekelheide, Inc.
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all of the strange variations on JPEG,
PNG, and GIF. You REALLY do not want to try to reimplement all of that.
--
Tim Roberts, [email protected]
Providenza & Boekelheide, Inc.
--
http://mail.python.org/mailman/listinfo/python-list
ou worry about
> the format that you want to display it in.
Nothing in the proposal being considered addresses any of that.
--
Tim Rowe
--
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On Sun, 2009-03-15 at 10:39 -0700, John Posner wrote:
> (My apologies if the thread has already covered this.) I believe I understand
> the WHAT in this situation, but I don't understand the WHY ...
> Is there a beneficial effect of silently creating the instance attribute,
> which outweighs the
On Mon, 2009-03-16 at 04:02 +, Tim Wintle wrote:
> On Sun, 2009-03-15 at 10:39 -0700, John Posner wrote:
Doh, reply out of thread there - I meant to reply to Rhodi's comment
further down.
> Is there any actual advantage to self.attribute picking up
> Class.attribute instea
[email protected] wrote:
hi all,
Is there any way to identify the File system type of a drive
in python in Windows? Some thing like:
C:\ -- NTFS
D:\ -- FAT32..
import win32api
import win32file
def file_system (drive_letter):
return win32api.GetVolumeInformation (
win32fil
not sure from what version, but certainly in 2.6 and on, you can improve
the syntax slightly:
b = iter(a)
b.next()
This syntax (also my preferred version) has been available since
at least 2.3
-tkc
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Jorgen Grahn wrote:
On Sun, 15 Mar 2009 22:47:54 -0700, Chris Rebert wrote:
On Sun, Mar 15, 2009 at 10:24 PM, [email protected]
wrote:
Hi all,
I have to write an application which does a move and copy of a
file from a remote machine to the local machine. I tried something
like:
fi
Am I missing something basic, or is this the canonical way:
with open(filename,"rb") as f:
buf = f.read(1)
while len(buf) > 0
# do something
buf = f.read(1)
That will certainly do. Since read() should simply return a
0-length string
def chunk_file(fp, chunksize=1):
s = fp.read(chunksize)
while s:
yield s
s = fp.read(chunksize)
Ah. That's the Pythonesque way I was looking for.
That's not pythonic unless you really do need to use
chumk_file() in a lot of places (IMO, more than 3 or 4). If it
only
I've an application where I need to create 50K files spread
uniformly across 50 folders in python. The content can be the name of
file itself repeated 10 times.I wrote a code using normal for loops
but it is taking hours together for that. Can some one please share
the code for it using
On Wed, 2009-03-18 at 11:13 -0700, Mike Driscoll wrote:
> On Mar 18, 1:09 am, "Gabriel Genellina"
> > Any decent installer is able to register a program so it runs on startup
> > (InnoSetup, by example). Anyway, if you want to it it yourself,
> > see:http://msdn.microsoft.com/en-us/library/bb77
sql = ''' INSERT INTO table (column1,column2, ...) VALUES ( %s,
%s, ); '''
for row in rows:
connection.cursor.execute(sql % (row[0],row[1],))
connection.corsur.commit()
but something binary in a cell, the pgdb says it is not in utf-8
format, or something like this.
I know it's a newbi
Bruno Desthuilliers wrote:
Tim Chase a écrit :
(if your columns in your CSV happen to match the order of your INSERT
statement, you can just use
execute(sql, tuple(row))
Or more simply:
cursor.execute(sql, row)
that's always annoyed me with the mxODBC drivers I've
us
[email protected] wrote:
>
>In Python 3 those lines become shorter:
>
>for k, v in a.items():
>{k: v+1 for k, v in a.items()}
That's a syntax I have not seen in the 2-to-3 difference docs, so I'm not
familiar with it. How does that cause "a" to be updat
Oops ,
for RIA there is always pyjamas (gwt for python ;-)
T
On Mar 19, 7:52 pm, Tim Hoffman wrote:
> Hi
>
> Well zope has quite a few of these out of the box and have been around
> for a bit longer than some of the java options.
>
> Specifically persistence (ZODB persistence
DB-API 2.0 has cursor.executemany() to make this differentiation
at the API level. mxODBC will lift this requirement in the next
version, promised :-)
glad to hear...will executemany() take an arbitrary iterable? My
(albeit somewhat-antiquated) version balked at anything that
wasn't a list/t
Hi
Well zope has quite a few of these out of the box and have been around
for a bit longer than some of the java options.
Specifically persistence (ZODB persistence in zope is pretty much
completely autmomatic)
you can inplement web services with it (xmlrpc out of the box, though
I assume you me
Caveat: none of the solutions (including mine) deal with the case of
the field being longer than the width. You might want to throw an
exception.
Alternatively, you can just crop the results. Tweaking MRAB's
elegant solution:
field_widths = [14, 6, 18, 21, 21, 4, 6]
infile = open("input.
optimum for all possible applications, each one has
different compromises. You've just discovered one of Python's.
--
Tim Rowe
--
http://mail.python.org/mailman/listinfo/python-list
2009/3/20 Hendrik van Rooyen :
> A joke based on the Monty Python series is BY DEFINITION not stupid!
But may get /too/ silly.
--
Tim Rowe
--
http://mail.python.org/mailman/listinfo/python-list
[email protected] wrote:
Hello all,
Is there any way to list out all the properties (name,
type, size) and attributes( Accesstime, mod time, archived or readonly
etc) of a folder and its contents recursively. Should I need ot go
inside each and every directory to list them? This
Tino Wildenhain wrote:
Tim Golden wrote:
...
and do the following:
from winsys import fs
for f in fs.flat ("c:/temp"):
f.dump ()
^ eeek!
Was the k! for the space before the bracket
(which, for some unaccountable reason disturbs
some people)? Or for the idea of du
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