I recently upgraded to numpy 1.0 from 1.0b5.   I noticed that numpy.argmax behavior is very strange on object arrays.  See below:
 
(Pdb) numpy.__version__
'1.0'
(Pdb) numpy.argmax(numpy.array([2, 3], dtype=object))
0
(Pdb) numpy.argmax(numpy.array([2, 3], dtype=int))
1
(Pdb) numpy.argmax(numpy.array([2, 3], dtype=object), axis=0)
0
 
 
I would expect the argmax to behave the same on the dtype=int and dtype=object examples but it doesn't.  Am I missing some subtelty or is this just a bug?  1.0 is the most recent version, right?
 
--Tom
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