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Wed Apr 8 20:30:02 CEST 2009 · https://mail.python.org/pipermail/python-dev/2009-April/088489.html

>>>>> foo = set([1, 65537])
>>>>> foo.pop()
>> 1
>>>>> foo = set([65537, 1])
>>>>> foo.pop()
>> 65537
> 
> You wrote a program to find the two smallest ints that would have a
> hash collision in the CPython set implementation?  I'm impressed.  And
> by impressed I mean frightened.

Well, Mark is the guy who deals with floating point numbers for fun.
*That* should frighten you :-)

Martin

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[Python-Dev] slightly inconsistent set/list pop behaviour