[Numpy-discussion] possible bug in seed argument

Travis Oliphant oliphant.travis at ieee.org
Fri Jul 28 11:53:30 CDT 2006


Gary Ruben wrote:
> See below:
>
> Robert Kern wrote:
>   
>> Gary Ruben wrote:
>>     
>>> Should
>>>  >>> seed(1)
>>> act the same as
>>>  >>> seed(array([1]))
>>> in the random module?
>>>       
>> No. They use slightly different mechanisms to seed. The integer uses RandomKit's 
>> seeding routine. I borrowed Python's mechanism for seeding from an array of 
>> integers. Now that it comes up, though, it is probably a good idea to use the 
>> same mechanism for both cases.
>>
>>     
>>> It generates a traceback with the Windows 1.0b1 binary.
>>>       
>> Please always copy-and-paste tracebacks when reporting bugs. It works for me 
>> with r2881; I'll rebuild with a later version and try again.
>>     

I can verify that this now works with numpy 1.0b1 on Python 2.3.  The 
change was using an updated Pyrex for generating mtrand.c (it no longer 
calls PyLong_AsUnsignedLong on integer objects as it did before).

-Travis





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