I'm an occasional user of Python and have a degree in computer science.
Almost every freaking time I use Python, I go through PSH (Python Setup
Hell). Sometimes a wrong version is installed. Sometimes it's a path issue.
Or exe naming confusion: python, python3, phthon311, etc. Or library
compatibil
Anyone know how to get the caption of the window currently in focus in
whatever app is in use? If I am using Excel, for example, I want my
python app to know that Excel is currently being used.
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Never mind ...
wHnd = win32gui.GetForegroundWindow()
Caption = win32gui.GetWindowText (wHnd)
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I'm trying to move a function into pyrex for speed. The python side
needs to pass a list to the pyrex function. Do I need to convert to
array or something so pyrex can generate tight code? I'm not clear how
to do this.
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Thanks for your comments.
> You probably didn't expect the Inquisition...
Correct ;-)
> 1. What is your speed requirement and how far short of that are you at the
> moment?
~10 times faster.
> 2. Are you sure there is no Python or third-party module that does what you
> want?
Yes.
> 3. Is
> Is it substantially faster with psyco than without? If psyco is performing
> its magic on the critical section of code already, you are going to lose
> that when switching to Pyrex.
Yes but from what I read Pyrex can be a lot faster than psyco under the
right circumstances.
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> cunningly concealed in the last place one would think of finding it: under
> the heading "Mailing List" on the Pyrex home page :-)
Hmmm - maybe I should try the scroll bar occassionally ;-)
> Do you mean alist[x:x+n] == alist[y:y+n] ?
OK, probably you an Skip are right - let's see if I missed
Pickling an instance of a class, gives "can't pickle instancemethod
objects". What does this mean? How do I find the class method creating
the problem?
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> How about you post the complete stack trace of the exception?
Exception in Tkinter callback
Traceback (most recent call last):
File "C:\program files\python\lib\lib-tk\Tkinter.py", line 1345, in
__call__
return self.func(*args)
File "C:\Public\world.py", line 1832, in BtnGo
DoBtnGo()
> I'd suggest that "pop" could be your culprit. ...What is pop? A function or
> an instance method?
Neither. pop is an instance of a class, like:
class X:
...
pop = X ()
pop surely is the culprit but it has arrays of objects, etc., and I
don't know what to look for.
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> Here's a thought: comment out every attribute in your class, and then try
> pickling it. If it succeeds, uncomment just *one* attribute, and try
> pickling again. Repeat until pickling fails.
Was trying to avoid that but you motivated me to do so and now I found
the probem.
In a utility routine
> and change "-lmsvcrt" to "-lmsvcr71".
But then I get this error: Python was built with version 7.1 of Visual
Studio, and extensions need to be built with the same version of the
compiler, but it isn't installed.
I want to use mingw.
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Thanks. I had done that but it seems I had to remove "install". Now it
works.
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Still problems :-(
I have a directory c:\data\code\test\pyrex containing:
build_and_install.bat:
"C:\program files\Python\python.exe" setup.py build_ext
--compiler=mingw32
pause
setup.py:
from distutils.core import setup
from distutils.extension import Extension
from Pyrex.Distutils import build
Thanks but now another problem :-(
Examples in books show importing a global so why does below give:
AttributeError: 'module' object has no attribute 'globalvar'
primes.pyx:
from run import globalvar
def prime(int kmax):
result = [run.globalvar]
...
run.py:
from primes import prime
globalvar =
Has anyone found a good link on exactly how to speed up code using
pyrex? I found various info but the focus is usually not on code
speedup.
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I'm not planning to write C functions. My understanding is that by
using cdefs in the python code one can gain substantial speed. I'm
trying to find a description of how to modify python code in more
detail so it runs fast under pyrex.
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> main point of Pyrex is ease of wrapping, not of speeding-up.
Supposedly the primes example is 50 times faster.
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> I never had an opportunity to do any more sophisticated math than simple
> adding,
multiplying, subtracting and dividing.
Neither is the primes example doing anything more sophisticated than
basic arithmetic but it's 50 times faster.
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Anyone have experience with string pattern matching?
I need a fast way to match variables to strings. Example:
string - variables
abcaaab - xyz
abca - xy
eeabcac - vxw
x matches abc
y matches a
z matches aab
w maches ac
v maches ee
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Anyone know how to create a draggable divider between two Tkinter
windows?
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That did the trick - thanks.
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Thanks for the interesting and detailed analysis. In my case I don't
need all possible answers by rather the first "greedy" match. Seems
like there might be some recursive approach.
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>You can do this with a regular expression...
I tried the plain RE approach and found it no faster than my
direct-coded version. Anyone have any ideas on how to code this problem
elegantly without RE? My code is long and cumbersome - 200 lines! Speed
is my primary concern but low LOC would be nice
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