unutbu <[EMAIL PROTECTED]> added the comment:
Georg, please forgive me. I thought a sample size of 3 was much too small to
make a claim about the typical case, but it appears after doing a computer
experiment that I was wrong:
#!/usr/bin/env python
from __future__ import division
import timeit
import random
repeat=100
num=100
def test_func():
l=1
for idx in range(10000):
l=l*idx
timer=timeit.Timer('test_func()','from __main__ import test_func')
data=timer.repeat(repeat=repeat,number=num)
def test_timer():
sample=random.sample(data,3)
minval=min(sample)
onerun=random.choice(data)
return 1 if minval<onerun else 0
successes=[test_timer() for idx in range(repeat)]
print "Those runs for which the claim in the documentation is true:",successes
s=sum(successes)
l=len(successes)
print "probability that the claim is true: %s/%s = %s"%(s,l,s/l)
Returns:
% timeit-statistics.py
Those runs for which the claim in the documentation is true: [0, 0, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1,
1, 1, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 1, 1, 1, 0, 1]
probability that the claim is true: 74/100 = 0.74
I'm satisfied the documentation is correct, and I'm really sorry for wasting
your time.
_______________________________________
Python tracker <[EMAIL PROTECTED]>
<http://bugs.python.org/issue3318>
_______________________________________
_______________________________________________
Python-bugs-list mailing list
Unsubscribe:
http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
