[Numpy-discussion] possible bug in seed argument

Gary Ruben gruben at bigpond.net.au
Fri Jul 28 08:22:52 CDT 2006


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.

Thanks Robert,
Here it is for reference. Not a very deep traceback:

 >>> seed(1)

Traceback (most recent call last):
   File "<pyshell#2>", line 1, in -toplevel-
     seed(1)
   File "mtrand.pyx", line 311, in mtrand.RandomState.seed
SystemError: C:\sf\python\dist23\src\Objects\longobject.c:240: bad 
argument to internal function




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