Message 150756 - Python tracker

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Author	lemburg
Recipients	Arfrever, Huzaifa.Sidhpurwala, Mark.Shannon, PaulMcMillan, Zhiping.Deng, alex, barry, benjamin.peterson, christian.heimes, dmalcolm, eric.araujo, georg.brandl, gvanrossum, jcea, lemburg, pitrou, terry.reedy, v+python, vstinner
Date	2012-01-06.17:59:39
SpamBayes Score	0.0005037032
Marked as misclassified	No
Message-id	<4F073682.6050005@egenix.com>
In-reply-to	<4F072943.8090603@egenix.com>

Content
Here's an example of hash-attack.patch finding an on-purpose programming error (hashing all objects to the same value): http://stackoverflow.com/questions/4865325/counting-collisions-in-a-python-dictionary (see the second example on the page for @Winston Ewert's solution) With the patch you get: Traceback (most recent call last): File "testcollisons.py", line 20, in <module> d[o] = 1 KeyError: 'too many hash collisions'

Here's an example of hash-attack.patch finding an on-purpose
programming error (hashing all objects to the same value):

http://stackoverflow.com/questions/4865325/counting-collisions-in-a-python-dictionary
(see the second example on the page for @Winston Ewert's solution)

With the patch you get:

Traceback (most recent call last):
  File "testcollisons.py", line 20, in <module>
    d[o] = 1
KeyError: 'too many hash collisions'

History
Date	User	Action	Args
2012-01-06 17:59:40	lemburg	set	recipients: + lemburg, gvanrossum, barry, georg.brandl, terry.reedy, jcea, pitrou, vstinner, christian.heimes, benjamin.peterson, eric.araujo, Arfrever, v+python, alex, dmalcolm, Mark.Shannon, Zhiping.Deng, Huzaifa.Sidhpurwala, PaulMcMillan
2012-01-06 17:59:39	lemburg	link	issue13703 messages
2012-01-06 17:59:39	lemburg	create