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Added a proper random.choice implementation that works with non-sequence iterables.

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Jeremy Fincher 2004-04-17 16:35:31 +00:00
parent 7ef716f406
commit 04876865f1
1 changed files with 17 additions and 0 deletions
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17
src/fix.py
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@ -33,6 +33,8 @@
Fixes stuff that Python should have but doesn't. Fixes stuff that Python should have but doesn't.
""" """
from __future__ import division
__revision__ = "$Id$" __revision__ = "$Id$"
__all__ = [] __all__ = []
@ -44,6 +46,21 @@ import new
import string import string
string.ascii = string.maketrans('', '') string.ascii = string.maketrans('', '')
import random
_choice = random.choice
def choice(iterable):
if isinstance(iterable, list):
return _choice(iterable)
else:
n = 1
ret = None
for x in iterable:
if random.random() < 1/n:
ret = x
n += 1
return ret
random.choice = choice
curry = new.instancemethod curry = new.instancemethod
def ignore(*args, **kwargs): def ignore(*args, **kwargs):