l):
>>> from inspect import getargspec
>>> getargspec(f)
(['x1', 'x2'], None, None, None)
George
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yield s[i:i+chunksize]
>
> I wrote this because I need to take a string of a really, really long
> length and process 4000 bytes at a time.
>
> Is there a better solution?
There's not any builtin for this, but the same topic came up just three
days ago: http://tinyurl.com/qec2
s = array('c')
while n>0:
s.append('01'[n&1])
n >>= 1
s.reverse()
return s.tostring() or '0'
try: import psyco
except ImportError: pass
else: psyco.bind(fast2bin)
George
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y discovered the joy of obfuscated python thanks to the
Code Golf challenges, here's the shortest non-recursive function I came
up with (all integers, signed):
f=lambda n:'-'[:n<0]+''.join(str(m&1)for m in iter(
lambda x=[abs(n)]:(x[0],x.__setitem__(0,x[0]>>1))[0],0))[::-1]or'0'
Any takers ? ;-)
George
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ow how to program; teaching them DSA, python, **and** stuff like the
> visitor pattern seems impossible.
"Beginning Python - From Novice to Professional" is approachable and
great as a textbook IMO. As a bonus, it covers up to python 2.4, which
very few existing books do.
George
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gs, ints, longs, or tuples
> --
> Does anything stand out which might be fixable?
Search and replace all "EXPAND+FILL" with "EXPAND|FILL" (vertical bar
instead of plus sign). This solves the specific error, though I've no
idea what else may be broken.
George
--
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le purpose of being used in comparisons. No numeric behavior was
implied, i.e. Smallest and Largest are not negative and positive
infinity in the math sense of the word. So I guess the "easily
implemented" refers to this case alone.
George
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Lawrence D'Oliveiro wrote:
> In message <[EMAIL PROTECTED]>, George
> Sakkis wrote:
>
> > Lawrence D'Oliveiro wrote:
> >
> >> Fredrik Lundh wrote:
> >> > you're not the designer...
> >>
> >> I don't have to be.
risk to be caught (with whatever consequences this
implies).
- Yes, you *might* be able to get away with it (at least for some time)
running in stealth mode.
- No, people here are not willing to help you go down this road, you're
on your own.
Hope this helps,
George
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Steve Holden wrote:
> George Sakkis wrote:
> > Neil Cerutti wrote:
> >
> >
> >>On 2006-09-26, Neal Becker <[EMAIL PROTECTED]> wrote:
> >>
> >>>Any suggestions for transforming the sequence:
> >>>
> >>>[1, 2, 3, 4...
t; return izip(*[chain(iterable, repeat(padvalue, n-1))]*n)
That's not quite the same as the previous suggestions; if the last
tuple is shorter than n, it pads the last tuple with padvalue. The OP
didn't mention if he wants that or he'd rather have a shorter last
tuple.
George
--
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erable)
while True:
window = tuple(islice(it,size))
if not window:
break
yield window
George
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[EMAIL PROTECTED] wrote:
> George Sakkis wrote:
> [...]
> > I'd rather have it as a function, not attached to a specific class:
> >
>
> Thanks a lot George, that was what I was looking for. Got to
> understand/appreciate inspect more.
> Of course it works as a
n, not attached to a specific class:
from inspect import getmembers, ismethod
def listMethods(obj):
d = obj.__class__.__dict__
return [name for name,_ in getmembers(obj,ismethod) if name in d]
HTH,
George
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ties.
Or, if you're comfortable studying on your own, you could start with a
book or two that focus on software design and architecture, rather than
language details and small programming recipes. I can't think of any
specific title to suggest off the top of my head but I'm sure you'll
get some good suggestions from others if you ask here.
George
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x27;t really qualify, for any
reasonable definition of "senior".
George
--
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Lawrence D'Oliveiro wrote:
> Fredrik Lundh wrote:
> > you're not the designer...
>
> I don't have to be. Whoever the designer was, they had not properly thought
> through the uses of this function. That's quite obvious already, to anybody
> who works with HTML a lot. So the function is broken and
relevant extract
from the main page:
You may either hardcode the urls of the css files, or parse the page,
extract the css links and normalize them to absolute urls. The first is
simpler but the second is more robust, in case a new css is added or an
existing one is renamed or remov
7;s not just me that thinks this
way.
Best,
George
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robin wrote:
> "George Sakkis" <[EMAIL PROTECTED]> wrote:
>
> >Here's what I came up with:
> >http://rafb.net/paste/results/G91EAo70.html. Tested only on my
> >bookmarks; see if it works for you.
>
> That URL is dead. Got another?
Yeap, try this
Hi all,
I am a bit perplexed by the following behaviour of the 'is' comparator
>>> x = 2.
>>> x is 2.
False
>>> y = [2., 2.]
>>> y[0] is y[1]
True
My understanding was that every literal is a constructure of an object.
Thus, the '2.' in 'x = 2.' and the '2.' in 'x is 2.' are different objects.
ample code before typing this python-like pseudocode ?
George
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Bruno Desthuilliers wrote:
> I must definitively be dumb, but so far I fail to see how it's better
> than split and rsplit:
I fail to see it too. What's the point of returning the separator since
the caller passes it anyway* ?
George
* unless the separator can be a regex, but
the syntax to do that. (not asking anyone to write my
> code, just looking for a pointer)
>
> Thanks
Hint: dict.get() takes an optional second argument.
George
PS: To make a new thread, don't hit "reply" on an existing thread and
change the subject. Just make a new thread.. duh.
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e:
# default object msg
If you insist though that you'd rather not use functions but only
methods, tough luck; you're better off with Ruby.
George
--
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les/python/path/). Your example could
be rewritten simply as:
from path import path
for html_file in path(start_dir).walkfiles('*.html'):
print 'html file found!'
George
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Calvin Spealman wrote:
> Just once, I would like to see a programming contest that was judged
> on the quality of your code, not the number of bytes you managed to
> incomprehensively hack it down to.
Unfortunately, quality is not as easy to judge as number of bytes. Such
contest would be as craz
)
>
> should turn into
>
> a = ( 1, 2, 3, None, None )
> b = ( 10, 20, None, None, None )
> c = ( 'x', 'y', 'z', 'e', 'f' )
>
> Of course with some len( ) calls and loops this can be solved but
> something tells me t
in izip(*columns):
> print row
>
> Now that is a nice occasion to get acquainted with the itertools module...
Wow, that's the most comprehensive example of itertools (ab)use I have
seen! Awesome!
George
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Michael wrote:
> Robert,
>
> Thanks to you and everyone else for the help. The "s.split('\x00',
> 1)[0] " solved the problem.
And a probably faster version: s[:s.index('\x00')]
George
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t = StringIO(text)
for line in text:
# do something
George
--
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sired
property: the intersections of the subsets should be as small as
possible, or in other words the subsets should be as distinct as
possible.
George
--
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es each covering 1/4*R with zero overlap ?
George
--
http://mail.python.org/mailman/listinfo/python-list
st dots going across the screen would be better
> than nothing.
>
> Does anyone have an example on how to show the progress of the
> upload/download when using ftputil?
You'll probably have more luck asking at
http://codespeak.net/mailman/listinfo/ftputil.
George
--
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quest the certain data need. Does anyone
> know how to do this? I would really appreciate it. Thanks.
This will get you started:
http://www.crummy.com/software/BeautifulSoup/
George
--
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n't tell in advance what "x[0] = 2" will do
without knowing the type of x. A binding OTOH like "x=2" has always the
same semantics: make the name "x" refer to the object "2".
Similarly to "x[0] = 2", something like "x.foo = 2" looks like an
assignment but it's again syntactic sugar for a (different) method
call: x.__setattr__('foo',2). All the above about __setitem__ hold for
__setattr__ too.
HTH,
George
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space between *every* operator in
expressions, group them based on precedence. E.g. instead of "(n *
sigmaSq - sigma * sigma) / (n * n)", I read it easier as "(n*sigmaSq -
sigma*sigma) / (n*n).
HTH,
George
--
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cription it's not really clear what's going on. Also, please
post working code; the snippets you posted were out of context (what is
row?) and not always correct syntactically (split_line(2:4)).
George
--
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file ? The
replies so far seem to imply so and in this case I doubt that you can
do anything more efficient. OTOH, if the same file is to be searched
repeatedly for different strings, an appropriate indexing scheme can
speed things up considerably on average.
George
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u5)]
Python2.5: 2.5c1 (r25c1:51305, Aug 18 2006, 19:18:03) [GCC 4.0.3
(Ubuntu 4.0.3-1ubuntu5)]
IronPython: 1.0.2444 on .NET 2.0.50727.42
Mono JIT compiler version 1.1.17
TLS: normal
GC:Included Boehm (with typed GC)
SIGSEGV: normal
Disabled: none
George
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m__
> self = modproxy()
> def call_with_module(*args,**kwargs):
> return func(self,*args,**kwargs)
> call_with_module.func_name = func.func_name
> return call_with_module
>
> @modmethod
> def MyRoutine(self):
> self.var = 1
>
> MyRoutine()
> print var
This looks quite hackish, both the implementation and the usage; most
people would get confused when they didn't find var's assignment at
global scope. I prefer the the simple global statements if they aren't
that many, otherwise the assignment of the module to self is also fine.
George
--
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> def MyRoutine():
> global var
> var = 1
>
> MyRoutine()
> print var
>
>
> # --- Module 2.py
> # 'Self' module processing
> import sys
> var = 0
> self = sys.modules[__name__]
>
> def MyRoutine():
> self.var = 1
>
> MyRoutine()
> print var
What's wrong with
def MyRoutine():
return 1
var = MyRoutine()
?
George
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oripel wrote:
> Thanks Paddy - you're showing normal use of function attributes.
> They're still hidden when wrapped by an uncooperative decorator.
The decorator module may be helpful in defining cooperative decorators:
http://www.phyast.pitt.edu/~micheles/python/documentat
ne reasons (complexity,portability,performance), so you'd better not
go down this road.
George
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Francach wrote:
> Hi George,
>
> Firefox lets you group the bookmarks along with other information into
> directories and sub-directories. Firefox uses header tags for this
> purpose. I'd like to get this grouping information out aswell.
>
> Regards,
> Martin.
Her
Paddy wrote:
> George Sakkis wrote:
> > It's always striked me as odd that you can express negation of a single
> > character in regexps, but not any more complex expression. Is there a
> > general way around this shortcoming ? Here's an example to illustrate a
>
Francach wrote:
> George Sakkis wrote:
> > Francach wrote:
> > > Hi,
> > >
> > > I'm trying to use the Beautiful Soup package to parse through the
> > > "bookmarks.html" file which Firefox exports all your bookmarks into.
> > >
ls. Has anybody got a couple of longer examples using
> Beautiful Soup I could play around with?
>
> Thanks,
> Martin.
from BeautifulSoup import BeautifulSoup
urls = [tag['href'] for tag in
BeautifulSoup(open('bookmarks.html')).findAll('a')]
Regards,
George
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#x27;m aware of re.split, but
that's not the point; this is just an example. Besides re.split returns
a list, not an iterator]
George
--
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ve objects rather than
> 'small code snippets'. Requiring source code input and passing arguments by
> string substitution makes it too painful for interactive work. The need to
> specify the number of repeats is an additional annoyance.
timeit is indeed somewhat cumbersome
; It could be written as::
Sure, it *could*; whether it *should* is a different issue. I can't
imagine a case for absolute *need* of lambda, but there are several
cases where it is probably the best way, such as the one of this
thread.
George
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Michael Spencer wrote:
> George Sakkis wrote:
> > Michael Spencer wrote:
> >
> >> Here's a small update to the generator that allows optional handling of
> >> the head
> >> and the tail:
> >>
> >> def chunker(s, chun
ld buf
s = " this . is a . test to . check if it . works . well . it looks .
like ."
for p in chunker(s.split(), keep_last=True, keep_first=True):
print p
George
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>>> y = x
>>> x = [s.replace('a', 'b') for s in x] # rebind to new list
>>> y is x
False
2)
>>> x = ["a","123a","as"]
>>> y = x
>>> x[:] = [s.replace('a', 'b')
Neil Cerutti wrote:
> On 2006-09-04, George Sakkis <[EMAIL PROTECTED]> wrote:
> > x=raw_input('\nType a number from 1 to 20')
> > try:
> > x = int(x)
> > if x<1 or x>20: raise ValueError()
> > except ValueError:
> > D
ber not in [1,20]), handle the second one as "Do_C" instead of
raising ValueError.
HTH,
George
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s?
>
> Thanks,
> Alan Isaac
Numeric/Numpy is ideal for this:
from Numeric import array
def slicelist(nestedlist,index):
a = array(nestedlist,'O')
# return the slice a[:,:,...,:,index]
fullindex = [slice(None)] * len(a.shape)
fullindex[-1] = index
return a[fullindex].tolist()
George
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; with 'b':
>
> x = map(lambda foo: foo.replace('a', 'b'), x)
Or more pythonically:
x = [s.replace('a', 'b') for s in x]
George
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Jean-Paul Calderone wrote:
> On 3 Sep 2006 09:20:49 -0700, [EMAIL PROTECTED] wrote:
> >Are you using the str.isspace() method? I don't use it, so if most
> >people don't uses it, then it may be removed from Py 3.0.
> >
> >I usually need to know if a string contains some non-spaces (not space
> >cl
in x:
for subelem in flatten(elem):
yield subelem
Or if you want to modify the argument list in place, as in Neil's
solution:
def flatten_in_place(x):
x[:] = flatten(x)
George
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the bill:
http://aspn.activestate.com/ASPN/search?query=progress+bar&x=0&y=0§ion=PYTHONCKBK&type=Subsection
HTH,
George
--
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oll one on your own, e.g. using a
recursive generator; in fact, if you had searched for "flatten" in the
google group of c.l.py, you'd find this: http://tinyurl.com/ndobk
George
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samir wrote:
> Saluton!
>
> Being a fond of Python, I had this idea: Why not making Python a Unix
> shell?
It's been done; it's called "IPython":
http://ipython.scipy.org/doc/manual/manual.html
George
--
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nix. YMMV
>
> Peace,
> ~Simon
>
I agree with this-- just try it. When I've helped others move code, I
found the biggest problem was when they had hardcoded file paths instead of
using os.path mechanisms.
--
Harry George
PLM Engineering Architecture
--
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you need more than csv, start writing to to
the OpenOffice.org formats, either with your own code or via PyUNO.
Then use OOo itself or a MS-sponsored ODF reader to translate to Excel
format. This should be a maintainable approach over time (but a lot
more complex than just csv).
--
Harry George
fter language, decade
after decade, platform after platform. Use your brain cells form
something useful, like learning new technologies and new
algorithms.
--
Harry George
PLM Engineering Architecture
--
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but TurboGears uses json-py.
https://sourceforge.net/projects/json-py/
--
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PLM Engineering Architecture
--
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ommon util.py in a package called "globals".
That could get really confusing. You might make it a standalone
package, or maybe use "utilities" or "common".
--
Harry George
PLM Engineering Architecture
--
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ot;I don't write _ so I don't need
[whatever language feature enables writing it]". It is important,
however, to be aware of the limitation and make your choice
deliberately.
George
--
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--
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A SAX parser can notify a text node by calling any number of times the
characters method so you need to accumulate all the information you
receive on the characters method and output the text when you get a
notification different than characters.
Best Regards,
George
is Smith's
assertions to the contrary).
It seems to me that the code complexity of such a super-duper
inferencing system would make its bug free implementation quite
difficult and I personally would be less inclined to trust a compiler
that used it than one having a less capable (but easie
static type
checker does the conversion automatically, then obviously types are
not static and can be changed at runtime.
Either way you've failed to prevent a runtime problem using a purely
static analysis.
George
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using the embedding
libraries and bindings.
--
Harry George
PLM Engineering Architecture
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On Mon, 26 Jun 2006 13:02:33 -0600, Chris Smith <[EMAIL PROTECTED]>
wrote:
>George Neuner wrote:
>
>> I worked in signal and image processing for many years and those are
>> places where narrowing conversions are used all the time - in the form
>> of floating
On Sun, 25 Jun 2006 14:28:22 -0600, Chris Smith <[EMAIL PROTECTED]>
wrote:
>George Neuner wrote:
>> >Undecidability can always be avoided by adding annotations, but of
>> >course that would be gross overkill in the case of index type widening.
>>
>>
On Sun, 25 Jun 2006 13:42:45 +0200, Joachim Durchholz
<[EMAIL PROTECTED]> wrote:
>George Neuner schrieb:
>> The point is really that the checks that prevent these things must be
>> performed at runtime and can't be prevented by any practical type
>> analysis perfo
r complete. Again, implementations went in
both directions. Some allowed either method by switch, but the type
compatibility issue continued to plague Pascal until standard
conforming compilers emerged in the mid 80's.
George
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--
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implement. By then
you should have a much better idea of what modules to look for.
George
--
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o a waiting page, hopefully I can figure
them out once I have one working.
George
> George Sakkis wrote:
> > I'm trying to use mechanize to fill in a "find a flight" form and then
> > get back the results, but I'm not sure how to make it wait until the
> > result
I'm trying to use mechanize to fill in a "find a flight" form and then
get back the results, but I'm not sure how to make it wait until the
results page appears; the response after submitting the form is the
"please wait while we are searching for your flights" page.
Dennis Lee Bieber wrote:
> On 22 Jun 2006 22:55:00 -0700, "George Sakkis" <[EMAIL PROTECTED]>
> declaimed the following in comp.lang.python:
>
>
> > Ok, I'll try once more: What does __setitem__ have to do with
> > **iterability**, not mutability or i
Dennis Lee Bieber wrote:
> On 22 Jun 2006 16:48:47 -0700, "George Sakkis" <[EMAIL PROTECTED]>
> declaimed the following in comp.lang.python:
>
> > What does __setitem__ have to do with iterability ?
>
> It confirms that the object is indexable, and muta
kinda defeats the purpose of
> the negative subscripts anyway.
>
> Is there some magic I'm missing here? Wouldn't it actually be better for
> Python to treat 0 as a special case here, so that x[-2:0] and x[-2:]
> generated the same result?
>
> --Tim
x[-2:None]
I
Bruno Desthuilliers wrote:
> George Sakkis a écrit :
> > This is ok - in theory. In practice I've found that e.g. strings are
> > more often than not handled as scalars although they are typically
> > iterables.
> >>> hasattr('', '__ite
hen Guido's planning to work that stuff into Python? The last post
> I noticed from him on the topic was from 2005. At least back then he
> sounded pretty into it.
I wouldn't count on it if I was to start a project sometime soon.
George
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"Both remote (PC-based) and autonomous (robot-based) execution
scenarios can be developed using a selection of programming languages,
including those in Microsoft Visual Studio® and Microsoft Visual
Studio Express languages (Visual C#® and Visual Basic® .NET),
JScript® and Microsoft IronPython 1.0
p://okmij.org/ftp/Haskell/types.html#branding
That was interesting, but the authors' method still involves runtime
checking of the array bounds. IMO, all they really succeeded in doing
was turning the original recursion into CPS and making the code a
little bit clearer.
George
--
for ema
On Wed, 21 Jun 2006 16:12:48 + (UTC), Dimitri Maziuk
<[EMAIL PROTECTED]> wrote:
>George Neuner sez:
>> On Mon, 19 Jun 2006 22:02:55 + (UTC), Dimitri Maziuk
>><[EMAIL PROTECTED]> wrote:
>>
>>>Yet Another Dan sez:
>>>
>>>... Requ
David Hirschfield wrote:
> Having email trouble...
>
Having bathroom trouble... can I help myself at your house entrance ?
Didn't think so...
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s. The runtime computation of an illegal index
value is not prevented by narrowing subtypes and cannot be statically
checked.
George
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--
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e often than not handled as scalars although they are typically
iterables. Also tuples may or may not be considered as iterables,
depending on what they are used for. The definition of scalar is
application-dependent, that's why there is not an isscalar() builtin.
George
--
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R.
>
> Cheers,
> Bryan Rasmussen
Harvestman (http://harvestman.freezope.org/) is your best bet.
George
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elf,inspect.ismethod):
if name.startswith('dump_'):
method()
def dump_f(self):
print 'The test method'
def dump_g(self):
print 'Hello user'
if __name__ == '__main__':
Foo()
George
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On 19 Jun 2006 13:53:01 +0200, [EMAIL PROTECTED] (Torben Ægidius
Mogensen) wrote:
>George Neuner writes:
>
>> On 19 Jun 2006 10:19:05 +0200, [EMAIL PROTECTED] (Torben Ægidius
>> Mogensen) wrote:
>
>> >I expect a lot of the exploration you do with incomplete progr
I am, however, going to ask what
information you think type inference can provide that substitutes for
algorithm or data structure exploration.
George
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a wrote:
> subway is pythons ruby on rails competitor
> pls tell me if u hav any expereinces
> thanks
u wanna know reils n subway ur so kewl omg! no expereinces watsoevah,
sori dud
PS: If you want to be taken seriously, put at least some effort to make
a readable english sentence. This is comp.
nor new style instances if __getstate__
returns a false valse, without any further justification. Any pointers
on the rationale for making a special case just out of the blue ?
George
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Duncan Booth wrote:
> Fredrik Lundh wrote:
>
> > George Sakkis wrote:
> >
> >> It shouldn't come as a surprise if it turns out to be slower, since
> >> the nested function is redefined every time the outer is called.
> >
> > except that it i
without such constructs, and use the profiler to find out.
It shouldn't come as a surprise if it turns out to be slower, since the
nested function is redefined every time the outer is called. If you
actually call the outer function a lot, you'd better profile it.
George
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else ;)
> If you have comma separated list '1,,2'.split(',') naturally returns
> ['1', '', '2']. I think you can get what you want with a simple regexp.
No need for regexp in this case, just use None to specify one or more
whitespace chars as
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