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Top Forums Shell Programming and Scripting Python: generateeuro-millions combinations Post 302512873 by alister on Monday 11th of April 2011 07:27:11 PM
Old 04-11-2011
Quote:
Originally Posted by sk1418
Code:
from itertools import combinations

Nicely done. I seldom hack in python (usually only when I need to tweak a tool to add/fix a feature), so I don't know it or its libraries very well. Still, after googling itertools and finding that the module is implemented in C, I'm confident your solution is as fast as it gets using python.
http://svn.python.org/view/python/tr...89&view=markup

I also came across some python code that's very similar to what I wrote earlier, heh.
http://docs.python.org/library/itert...s.combinations

Amusingly, I just tried to time the itertools approach on my machine, but since the only python I have installed is 2.5.1 (it's not my main machine), itertools is not available (it's new in 2.6). It's an old OSX Tiger macbook that I don't use much.

Regards,
Alister

Last edited by alister; 04-11-2011 at 08:32 PM..
 

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UPDATE-PYTHON-MODULES(8)				      System Manager's Manual					  UPDATE-PYTHON-MODULES(8)

NAME
update-python-modules - byte-compile python modules SYNOPSIS
update-python-modules [options] [package.public [...]] DESCRIPTION
The update-python-modules command is part of the python-support bundle. update-python-modules is responsible for the byte-compilation of python modules. When used in byte-compilation mode, it will byte-compile modules references in the files given on the command line. When used in installation mode, it will byte-compile them once for each installed python version, and will make them available for all of them. At each invocation, with or without arguments, update-python-modules will check for installed python versions, and will build or remove modules according to new or removed versions since the last time it was run. ARGUMENTS
Arguments must be files or directories located in the /usr/share/python-support directory. Depending on their extension, they are treated differently. package.public A file listing public modules to install for each version. These modules must lie in /usr/share/pyshared or /usr/lib/pyshared. package.private A file listing private modules to byte-compile for one Python version. package/ A legacy directory hierarchy of public modules. The C extensions and portions that change with the Python version are to be found in /usr/lib/python-support/pythonX.Y/package/. package.dirs A legacy file listing directories where to find private modules. OPTIONS
-h, --help Show summary of options. -v, --verbose Detail all actions while they are performed. -b, --bytecompile Only accept to work on private modules. When given this option, update-python-modules will fail if passed references to public mod- ules. -i, --install Only accept to work on public modules. When given this option, update-python-modules will fail if passed references to public mod- ules. -c, --clean Clean modules instead of installing them. -a, --rebuild-all Rebuild all private modules. This is necessary when the default python version was changed, for example. -f, --force-rebuild-all Clean all modules (public and private), and rebuild them. FILES
/usr/lib/pymodules/pythonX.Y/ These directories contain the byte-compiled modules for version pythonX.Y. SEE ALSO
/usr/share/doc/python-support/README.gz AUTHOR
Josselin Mouette <joss@debian.org>. 18 Feb 2009 UPDATE-PYTHON-MODULES(8)
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