[Numpy-discussion] numpy.int32 is not subclass of int, but numpy.int64 is
Andrew.MACKEITH at 3ds.com
Mon Nov 14 15:18:36 EST 2011
Could someone explain this?
An instance of numpy.int32 is not an instance of int or numpy.int.
An instance of numpy.int64 is an instance of int and numpy.int.
I don't know if it is a bug in my linux build.
Python 2.6.2 (r262:71600, Jul 8 2010, 11:49:56)
[GCC 4.1.2 20070115 (SUSE Linux)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy
>>> a = numpy.array((1,2,3))
>>> isinstance(a, int)
>>> isinstance(a, numpy.int)
>>> seven = numpy.int64(7)
>>> isinstance(seven, numpy.int)
>>> isinstance(seven, int)
>>> five = numpy.int32(5)
>>> isinstance(five, numpy.int)
>>> isinstance(five, int)
>>> issubclass(numpy.int64, numpy.int)
>>> issubclass(numpy.int32, numpy.int)
>>> import sys
>>> import platform
>>> print platform.platform()
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