On Tue, 11 Dec 2012 16:08:34 -0500, Dave Cinege wrote:
> On Tuesday 11 December 2012 03:12:19 Steven D'Aprano wrote:
>
>> Is this intended as a ready-for-production class?
>
> For me, yes. In production code.
>
>> py> d = Thesaurus()
>> py> d['
On Tue, 11 Dec 2012 16:08:34 -0500, Dave Cinege wrote:
> On Tuesday 11 December 2012 03:12:19 Steven D'Aprano wrote:
>
>> Is this intended as a ready-for-production class?
>
> For me, yes. In production code.
>
>> py> d = Thesaurus()
>> py> d['
x27;t think that is acceptable here.
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ve just won an award for Most
Cognitive Dissonance Exhibited In The Shortest Time. I'm not sure how you
can yell at somebody that Google users should be dead in one post, and
then nine minutes later say this.
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amba has provided secure, stable and fast file and print
services for all clients using the SMB/CIFS protocol, such as all
versions of DOS and Windows, OS/2, Linux and many others.
Samba is an important component to seamlessly integrate Linux/Unix
Servers and Desktops into Active Directory environm
o
magical and complicated to be interested in using it in production code
as it stands now.
[1] Well, technically there's another way: one might reimplement the
functionality of super() in your own code, and avoid using super() while
having all the usual joys of reinventing the wheel.
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On Wed, 12 Dec 2012 17:18:43 -0700, Michael Torrie wrote:
> Now if we could just get an Exchange replacement that actually doesn't
> suck...
But but but... if it didn't contain sufficient levels of suckage, it
would hardly be a replacement for Exchange, would it?!?!?
:-P
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ch line, or
something else.
Where I expect you *will* see a good benefit is:
* you have many lines to search;
* but only a few actually match the regex;
* the regex is quite complicated, and needs to backtrack a lot;
* but you can eliminate most of the "no match" cases with a simple
substring match.
If you are in this situation, then very likely you will see a big benefit
from a two-pass search:
for line in log:
if any(substr in line for substr in list_of_substrings):
# now test against a regex
Otherwise, maybe, maybe not.
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health to you"
"Best wishes"
"Sincerest regards"
only less formal.
Does the Internet not work where you are? Googling for "define:cheers" or
"definition cheers" should have answered that question.
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Testing testing 1 2 3 4.
I've sent at two posts that appear to have been eaten by the Great Usenet
Monster. Will this fare any better? Time to find out.
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'a final quotation mark'),
'Pi': r('Punctuation, Initial', 'Initial_Punctuation',
'an initial quotation mark'),
'Po': r('Punctuation, Other', 'Other_Punctuation',
'a punctuation mark of other type'),
'Ps': r('Punctuation, Open', 'Open_Punctuation',
'an opening punctuation mark (of a pair)'),
'S' : r('Symbol', 'Symbol', 'Sc | Sk | Sm | So'),
'Sc': r('Symbol, Currency', 'Currency_Symbol', 'a currency sign'),
'Sk': r('Symbol, Modifier', 'Modifier_Symbol',
'a non-letterlike modifier symbol'),
'Sm': r('Symbol, Math', 'Math_Symbol',
'a symbol of mathematical use'),
'So': r('Symbol, Other', 'Other_Symbol', 'a symbol of other type'),
'Z' : r('Separator', 'Separator', 'Zl | Zp | Zs'),
'Zl': r('Separator, Line', 'Line_Separator',
'U+2028 LINE SEPARATOR only'),
'Zp': r('Separator, Paragraph', 'Paragraph_Separator',
'U+2029 PARAGRAPH SEPARATOR only'),
'Zs': r('Separator, Space', 'Space_Separator',
'a space character (of various non-zero widths)'),
}
del r
Usage is then trivially the same as normal dict and attribute access:
py> GC['Ps'].desc
'an opening punctuation mark (of a pair)'
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n self.render_to_response(data, cache, cache_timeout, cache_key)
>
> Then again, maybe the more functional approach is better for its
> simplicity?
I actually prefer a functional response, up to the point where I'm
passing so many arguments to functions that I can't keep track of what's
what. Then I refactor into a class.
> Hopefully I'm not boring ya'll to death. :D
No worries :-)
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of getting Python 2.7, it runs
under Python 2.4 and gives me system errors.
When I run env directly, it ignores my alias:
steve@ando ~]$ /usr/bin/env python -V
Python 2.4.3
What am I doing wrong?
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> file3", shell = True)
0
py> os.system("cat < file1 > file4")
0
py> quit()
[steve@ando ~]$ cat file2
hello world
[steve@ando ~]$ cat file3
hello world
[steve@ando ~]$ cat file4
hello world
I have run this multiple times, as an unprivileged user, as the root
user, and as sudo. It works perfectly every time.
Please check your code. Perhaps you have over-simplified the problem.
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spective, but I don't think it is wise to
hire somebody who is likely to leave for greener pastures just as you are
starting to rely on them.
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r code. It gives indentation errors, you don't tell us what
modules you're using, and you haven't reduced the example down to the
critical parts that demonstrate the failure.
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te directly in the
body of your email, chances are it is too large to expect people to debug
for you. But you can try adding it as an attachment (.py, not .doc), and
only if you can't do that for some reason, then maybe a paste bin is
appropriate.
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On Sun, 16 Dec 2012 08:59:46 -0800, rurpy wrote:
> Or you could repost from other than GG if you don't mind being a tool of
> someone else's political agenda.
We're all tools of someone's political agenda.
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code without the full traceback is like trying to read a
book by reading only every third page.
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l
problem.
Oh wait, I see you already know this! Sorry for the noise.
*wink*
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;[z]
Suppose you pass x=1, y={} so that x+y fails. What do you expect Python
to do if you tell it not to stop at an exception? What will it print?
What result should it return?
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,
>decrypt(taxpayer.enc_name),
>taxpayer.age,
>taxpayer.occupation
>FROM taxpayer WHERE (taxpayer.id IS NOT NULL);'
>
> Can somebody please help?
Can you do this?
stmnt = r_stmnt
That should do what you are asking.
If that doesn't solve your problem,
y pure accident, you lined up the "else" statement with the for loop,
instead of what you needed:
for line in tm:
... blah blah blah
for word in words:
if word in word_counts: # better name than "dict"
... blah blah blah
else:
...
> for word, count in dict.iteritems():
> print word + ":" + str(count)
And this bit is okay too.
Good luck!
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'ham')
if offset != -1:
lunch = lunch[:offset] + 'spam' + lunch[offset + len('ham'):]
print(lunch)
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nother character
By memory:
s = "a"*10
s = s.replace("a", "b")
or equivalent. Hardly representative of normal string processing, and
likely to be the worst-performing operation on new Unicode strings. And
yet even so, many people reported either a mild slow
e tell you what button to click or command to give?
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arcpy.mapping.MapDocument('CURRENT')
> df = arcpy.mapping.ListDataFrames(mxd, "Layers") [0]
> df.zoomToSelectedFeatures()
How do you expect to zoom to selected features if you have no selected
features? Before this line, you need to select the feature you want to
zoom t
eal" code it's unfortunately not
> possible to pass that number to whatever is going to use it in the
> other file, I have to simulate a kind of global variable
> shared between different files.
Well, I find that hard to believe. "Not convenient"? I could believe
y one of *your* classes, methods, functions, modules and
variables are using non-ASCII names, you will still use ASCII strings for
built-in functions and standard library modules.
> What should a Python user think, if he sees his strings are comsuming
> more memory just because he uses non ascii characters
WRONG!
His strings are consuming just as much memory as they need to. You cannot
fit ten thousand different characters into a single byte. A single byte
can represent only 2**8 = 256 characters. Two bytes can only represent
65536 characters at most. Four bytes can represent the entire range of
every character ever represented in human history, and more, but it is
terribly wasteful: most strings do not use a billion different
characters, and so use of a four-byte character encoding uses up to four
times as much memory as necessary.
You are imagining that non-ASCII users are being discriminated against,
with their strings being unfairly bloated. But that is not the case.
Their strings would be equally large in a Python wide-build, give or take
whatever overhead of the string object that change from version to
version. If you are not comparing a wide-build of Python to Python 3.3,
then your comparison is faulty. You are comparing "buggy Unicode, cannot
handle the supplementary planes" with "fixed Unicode, can handle the
supplementary planes". Python 3.2 narrow builds save memory by
introducing bugs into Unicode strings. Python 3.3 fixes those bugs and
still saves memory.
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xt of
the language you are using, not some other language. If you are using a
DSL, then normal Python rules don't necessarily apply. <= in particular
looks just like a left-pointing arrow and is an obvious candidate for
overloading.
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ement in, just to satisfy the compiler, you
get the same result:
> def test():
> pass
Also a function which immediately exists and return None.
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and ugly? :-P
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if we did so, it still
wouldn't have anything to do with numeric division.
> Taking a string modulo a tuple doesn't make any sense in itself,
Taking an integer cross an integer doesn't make any sense if you haven't
learned the meaning of the + operator. Why insist that o
ease do
not try to screen-scrape Wikipedia. Instead, use their API for accessing
pages.
http://en.wikipedia.org/wiki/Wikipedia:Creating_a_bot
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in their right mind. To say nothing of 15 year old
websites that use a legacy encoding. And to support those, you may need
to guess the encoding, and for that, chardetect.py is the solution.
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houldn't advertise what it is.) The OP's post
was correctly labelled with an encoding, and not an obscure one:
Content-Type: text/plain; charset=ISO-8859-1
which if I remember correctly is Latin-1. If your newsreader can't handle
that, surely it should default to UTF-8, which
ument for *instance*
methods, not class methods. For class methods, the conventional first
argument is "cls", not "self".
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shared across instances, what Python users usually
call an "instance attribute" or even just "attribute".
As I see it, it is not Python being inconsistent. What do you consider is
inconsistent by *avoiding* the use of "class variable" to mean an
attribute or member attached to a class?
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On Tue, 25 Dec 2012 16:19:21 -0800, Rick Johnson wrote:
> On Tuesday, December 25, 2012 4:56:44 PM UTC-6, Steven D'Aprano wrote:
>
>> Rick, what makes you think that this is logically inconsistent?
>> "Method" is the accepted name for functions attached to clas
ooked at the
_strptime.py source code and nothing stands out to explain why the
_strptime function might not be defined. So that seems like a question
about mod_wsgi. I suggest you start here:
http://code.google.com/p/modwsgi/wiki/WhereToGetHelp
If you do get an answer, please post it here a
s sharp
edge, and who should have been responsible to do so?
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rgument on counter-factuals (assumptions about English language which
are not, in fact, true) then even if your reasoning is utterly logical in
every step, the conclusion is still dubious.
[1] Ah who am I kidding?
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one" and
> "two".
I'm afraid you're going to be disappointed. There is no possible way for
one() and two() as shown above to report different names, because they
are the same function object.
py> two = lambda : "one"
py> one = two
py> one is two
True
py&g
Spanish Inquisition!"
...
py> name = "spam"
py> func = globals()[name]
py> func()
'NOBODY expects the Spanish Inquisition!'
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return x[0][2]
def invert(n):
if n != 0:
return 1/n
else:
me = get_current_function_name()
raise ZeroDivisionError('divide by zero error in func %s' % me)
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On Thu, 27 Dec 2012 07:32:16 -0600, Tim Chase wrote:
> Depending on where in the code you are, the same function object also
> has a local name of "fn". It's madness until you understand it, and
> then it's beauty :)
"This is madness!"
"N
On Thu, 27 Dec 2012 10:09:01 -0500, Roy Smith wrote:
> In article <[email protected]>,
> Steven D'Aprano wrote:
>
>> On Wed, 26 Dec 2012 23:46:31 -0800, Abhas Bhattacharya wrote:
>>
>> >> > two = lamba : &quo
personal preference for a
specific IDE, then good for them, I certainly wouldn't tell them that
they shouldn't use it.
[1] KDE 3 only. KDE 4 is unspeakable. Gedit from Gnome 2 is almost a good
substitute.
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hing else. You need to run the
"easy_install BeautifulSoup4" command from the system shell, not Python.
Try that, and if there's another error, please copy and paste the exact
command you used, and the full error message.
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do so is with the unittest module:
# after defining the class above
import unittest
unittest.main()
which then prints:
py> unittest.main()
No handlers could be found for logger "__main__"
.
--
Ran 1 test in 0.045s
t level is WARNING, which means that only events of this level
and above will be tracked, unless the logging package is configured to do
otherwise.
[end quote]
http://docs.python.org/dev/howto/logging.html
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s, but they can't do everything, and
very often even if they can do something they shouldn't because it makes
the code inefficient or unreadable.
There's nothing wrong with a two or three liner.
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ethod.
I don't believe that talking about the constructor __new__ is so
complicated that we should ignore the actual error and go of on a wild-
goose chase about the initialiser __init__, especially since adding an
__init__ method to the class *won't solve the problem*.
Sorry Chris, I t
y when I change a lot of my mappings.
It seems to me, that by the time I would have searched for the right
command to use, decided which of the (multiple) matching commands is the
right one, then used the command, it would have been quicker and less
distracting to have just done the editing by hand. But now I'm just
repeating myself.
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the line number.
Assuming that your functions and methods are not obnoxiously huge, I
think having a good class browser which lets you jump directly to
functions or methods is *far* more useful than line numbers, in this
context.
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t, then match:
py> 'Straße'.casefold()
'strasse'
Curiously, there is an uppercase ß in old German. In recent years some
typographers have started using it instead of SS, but it's still rare,
and the official German rules have ß transform into SS and vice versa.
I
pylint may still complain, but you can ignore it. By deleting the name
"format", that will unshadow the builtin format.
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96 to an n-dash character, you need to identify the
encoding to use.
(Aside: and *stop* using it. It is 2013 now, anyone who is not using
UTF-8 is doing it wrong. Legacy encodings are still necessary for legacy
data, but any new data should always using UTF-8.)
CP 1252 is one possible encoding,
hile being in scipy source directory; please
exit the scipy source tree first, and relaunch your python interpreter.
Do you understand what a source directory is? It is a directory (a
folder) with the source code in it. Leave the scipy directory, and re-
start Python, then try importing sci
On Wed, 02 Jan 2013 00:49:36 +0100, someone wrote:
> On 01/01/2013 12:49 PM, Steven D'Aprano wrote:
> > On Tue, 01 Jan 2013 12:00:32 +0100, someone wrote:
> >
> >> See this code (understand why I commented out first line):
> >>
> >> # from OpenG
explicitly going against PEP 8.
> You shouldn't have to use those underscores very often. After all,
> there is seldom a need for a non-const global value, right? Don't think
> of it as a pylint problem, but as a hint from pylint that perhaps you
> should use fewer globals.
That at least is good advice.
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__.py)?
It's defined in the C source code for the CPython compiler. Look in
future.c.
http://hg.python.org/cpython/file/944e86223d1f/Python/future.c
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e it as "var[0]", "var[1]" etc.
var = ['banana', 'apple', 'mango']
print var[0] # prints 'banana'
print var[1] # prints 'apple'
print var[2] # prints 'mango'
Of course "var" is not a very good variable name. "fruit" or "fruits"
would be better.
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Error("'import' prohibited")
for c in '_"\'.':
if c in expr:
raise ParseError('prohibited char %r' % c)
if len(expr) > 120:
raise ParseError('expression too long')
globals = {'__builtins__': None}
locals = symbolTable
return eval(expr, globals, locals) # fingers crossed!
I can't think of any way to break out of these restrictions, but that may
just mean I'm not smart enough.
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>
> Will ast.literal_eval do what you want?
No. Grant needs to support variables, not just literal constants, hence
the symbol table.
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+1 QOTW
Thank you for sharing this with us.
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s://secure.graphpad.com/guides/prism/6/statistics/index.htm
http://www.webapps.cee.vt.edu/ewr/environmental/teach/smprimer/outlier/outlier.html
http://stats.stackexchange.com/questions/38001/detecting-outliers-using-standard-deviations
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On Mon, 07 Jan 2013 02:29:27 +, Oscar Benjamin wrote:
> On 7 January 2013 01:46, Steven D'Aprano
> wrote:
>> On Sun, 06 Jan 2013 19:44:08 +, Joseph L. Casale wrote:
>>
>>> I have a dataset that consists of a dict with text descriptions and
>>>
namedtuple;
There is one standard built-in mapping type:
dict
plus at least two more in the standard library, defaultdict and
ordereddict;
etc. You can read the docs more easily than I can copy the types out.
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ht re.match('h.$', 'hbxihi') will match ‘hi’ ,but it does not .so
> why ?
re.match only matches at the *start* of the string, so "h.$" tries to
match:
* start of string
* literal h
* any character
* end of string
You want re.search, which will search the en
or annoy those you are asking for help.
(Apologies to anyone on the "tutor" mailing list who has already seen
this message earlier today.)
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ren't there, or missing the
patterns which are there. At best line fitting by eye is prone to honest
errors; at worst, it is open to the most deliberate abuse. We have eyes
and brains that evolved to spot the ripe fruit in trees, not to spot
linear trends in noisy data, and fit
asonable by eyeballing it.
[1] Or if your data is so accurate and noise-free that you hardly have to
care about errors, since there clearly is one and only one straight line
that passes through all the points.
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On Tue, 08 Jan 2013 06:43:46 +1100, Chris Angelico wrote:
> On Tue, Jan 8, 2013 at 4:58 AM, Steven D'Aprano
> wrote:
>> Anyone can fool themselves into placing a line through a subset of non-
>> linear data. Or, sadly more often, *deliberately* cherry picking fake
>&
ve a line pointing more
or less in the right direction. But for anything where accuracy is
required, line fitting by eye is down in the pits of things not to do,
right next to "making up the answers you prefer".
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t;Pfff, facts, you can prove anything that's even remotely true with
facts!"
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example code
that demonstrates your problem. Or, in this case, *fails* to demonstrate
the problem.
import re
haystack = "aaa\naaa /*xxxThis is a test comment \nxxx*/aaa\naaa\n"
needle = "This is a test comment"
pattern = re.compile(r'/\*.*?'+ needle + '.*?\*/&#x
would do but using
only Python.
https://duckduckgo.com/?q=python%20wget
Or you could search for "python call external command" and then use wget
as that external command.
https://duckduckgo.com/?q=python%20call%20external%20command
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number 8:
http://www.tiobe.com/index.php/content/paperinfo/tpci/index.html
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t feeling."
If you are going to criticise TIOBE's methodology, and then make your own
claims for language popularity, you really need to demonstrate that your
methodology is better.
> Javascript
> may not be glamorous but it is *the* glue that makes the web run.
And web development is a tiny fraction of all software development.
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methods. Write your own function to decide whether or not
something passed, then count how many times it passed:
count = 0
for n in range(5):
count += self.run_some_test() # returns 0 or 1, or a fuzzy score
if count < some_cut_off:
self.fail()
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operator will fail, without any need for a separate
> test.
You don't even need tests for the code that includes the ternary
operator. The module simply won't compile in Python 2.4, you get a
SyntaxError when you try to import it or run it.
You don't need PyLint to check for *illegal syntax*. Python already does
that.
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rt lib::gui::tkinter::dialogs.SimpleDialog as Blah
Before thinking about the syntax, you need to think about the behaviour,
identify what actual problem you hope to solve, and how you hope to solve
it. Not just throw random syntax around and hope that it's "obvious".
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y, it should generate approximately equal numbers
of "male" and "female" values. So he writes a unit test to check that the
numbers are roughly equal.
This is an appropriate test, although as I already suggested earlier,
unit tests are not well suited for non-deterministic testing.
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a module as a
singleton, I need to use one syntax; if I use a custom type as a
singleton, I have to use different syntax. Whichever choice I make
*today*, if the implementation changes, the required syntax changes and
my code will break.
[1] Well, almost. There are ways to accidentally or deliberately confuse
the import machinery.
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whether it is a function, a
method, a class or something else. The implementation could change, and
you need not care.
If you actually do care what the type of simpledialog is, you can find
out easily:
type(lib.gui.simpledialog)
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tbird.net/larks/tmovies.html
For the benefit of those who don't have web access at the moment, or who
don't like to click on random links they don't know anything about, would
you like to say a few words describing what "text movies" are, and how
you think these m
It will take time. Calculations don't just happen instantly,
the more work you have to do the longer they take.
The last alternative is to ask on a specialist numpy list. But I expect
they will probably tell you the same thing.
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On Sun, 13 Jan 2013 20:01:21 -0800, subhabangalore wrote:
> there are other solution of converting back the matrix to graph should I
> try that?
Yes.
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this one is TKO in round 3.
A template is certainly not correct for class-based OOP languages like
Python, since it implies *copying*. It might be more appropriate for
prototype-cased OOP languages like Javascript.
[...]
> Now since "methods" and "functions" (PyWart on these terms coming soon!)
Oh I can barely contain my excitement.
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On Sun, 13 Jan 2013 21:22:57 -0800, Rick Johnson wrote:
> On Saturday, January 12, 2013 12:45:03 AM UTC-6, Steven D'Aprano wrote:
>> On Fri, 11 Jan 2013 20:34:20 -0800, Rick Johnson wrote:
>> > [...]
>> So what do you do for, say, os.path? According to the first
chool follows the "Don't feed the trolls"
> motto and ignores him, the other trolls him right back.
I object to that characterisation. I am not dishonestly making
provocative statements when I engage with Rick.
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gt; site-packages that does not exist? Subdirs of site-packages that are not
> included in sys.path?) What is python doing there, and why? And, more
> importantly, how can this be corrected?
What's the value of the environment variable PYTHONPATH?
Do you have a PYTHONSTARTUP s
er method simply looks up an attribute with the same name, and
calls it as a function with whatever args and kwargs it gets.
Does this help?
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> dict_ = {}
py> thingy = type(name, bases, dict_)
py> isinstance(thingy, type)
True
py> thingy
Classes are instances of type. That is reality in Python.
Classes are objects just like ints and strings and lists. This is a
fundamental design choice of Python. Deal with it.
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that are etiher None, or the number of tests that were
> failed.
Why set them to None when no tests failed? If no tests failed, why not
just use 0?
That is, instead of the counters being "the number of failures, or None",
they could be "the number of failures".
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ath and just pay attention to
the file name. If you don't know which directory the file is in, printing
the full path is essential.
On the other hand, abbreviating the path gains you practically nothing
when you know where the file is, and costs you a lot when you don't.
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e a it was the dict d.
Then make it a dict:
class C(dict):
def some_other_methods(self):
pass
my_dict = C(key="value") # or C({"key": "value"})
print len(my_dict)
print my_dict['key']
my_dict.some_other_methods()
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e with a single underscore
> indicates that the variable should be treated as
> ‘private’. ...
Please do not send HTML emails to this newsgroup.
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NTINEL = object()
def param(arg=SENTINEL):
nonlocal default
if arg is SENTINEL:
return default
else:
default = arg
return arg
if name is not None:
param.__name__ = name
return param
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