What about this as a possibility: >>> numpy.intp(0).itemsize == 8 True
-Mark On Tue, Oct 19, 2010 at 7:11 PM, Vincent Davis <[email protected]>wrote: > A little followup from the python list. I thought this was worth sharing > here. > > Quoting Ned Deily, [email protected] > > " > It looks better but <refering to print platform.architecture()>, > unfortunately, it doesn't work correctly on OS X > where a universal build can have both 32-bit and 64-bit executables in > the same file. > > $ arch -x86_64 /usr/local/bin/python2.7 -c 'import sys,platform; > print(sys.maxint,platform.architecture())' > (9223372036854775807, ('64bit', '')) > $ arch -i386 /usr/local/bin/python2.7 -c 'import sys,platform; > print(sys.maxint,platform.architecture())' > (2147483647, ('64bit', '')) > > At the moment, the sys.maxint trick is the simplest reliable test for > Python 2 on OS X. For Python 3, substitute sys.maxsize. > > > Yes that looks like the right way of doing it. Interesting though that > > platform.machine()=i386 and not something about 64. > > >>> print platform.machine() > > i386 > > >>> print platform.architecture() > > ('64bit', '') > > >>> import sys; sys.maxint > > 9223372036854775807 > > Currently on OS X (10.6 and earlier), uname returns 'i386' for any Intel > platform, 32-bit only or 32-bit /64-bit capable. > > $ uname -p > i386 > " > > On Tue, Oct 19, 2010 at 4:25 PM, Vincent Davis <[email protected]> > wrote: > > On Tue, Oct 19, 2010 at 4:13 PM, Jonathan Rocher <[email protected]> > wrote: > >> Hi, > >> > >> If you directly want to know if it is a 32 or 64 bits, you can also use > >> import platform > >> print platform.architecture() > >> > >> Best, > >> Jonathan > >> > >> On Tue, Oct 19, 2010 at 5:09 PM, David Cournapeau <[email protected]> > >> wrote: > >>> > >>> On Wed, Oct 20, 2010 at 6:54 AM, Vincent Davis < > [email protected]> > >>> wrote: > >>> > What is the best/good way to know what version of numpy is running > (32 > >>> > or 64 bit). > >>> > >>> import platform > >>> print platform.machine() > >>> > >>> > Showing my ignorance maybe but does it always match the python > version > >>> > that is running, which can be ask/tested using sys.maxint? > >>> > >>> Yes, I don't know any system which enables you do load a 32 bits > >>> extension into a 64 bits. Neither windows, mac or linux can at least, > >>> > >>> cheers, > >>> > >>> David > > > > on python27 64 bit > > import platform > > print platform.machine() > > i386 > > print platform.architecture() > > ('64bit', '') > > sys.maxint > > 9223372036854775807 > > > > on python2.6 32bit > >>>> import platform > >>>> print platform.machine() > > i386 > >>>> print platform.architecture() > > ('32bit', '') > > sys.maxint > > 2147483647 > > > > And given David's answers if python is 64(or 32) then numpy/scipy is > > the same or not working :-) > > > > Thanks > > Vincent > > > > > >>>> > > > >>> _______________________________________________ > >>> NumPy-Discussion mailing list > >>> [email protected] > >>> http://mail.scipy.org/mailman/listinfo/numpy-discussion > >> > >> > >> > >> -- > >> Jonathan Rocher, > >> Enthought, Inc. > >> [email protected] > >> 1-512-536-1057 > >> http://www.enthought.com > >> > >> > >> _______________________________________________ > >> NumPy-Discussion mailing list > >> [email protected] > >> http://mail.scipy.org/mailman/listinfo/numpy-discussion > >> > >> > > > > > > > > -- > > Thanks > > Vincent Davis > > 720-301-3003 > > > > > > -- > Thanks > Vincent Davis > 720-301-3003 > _______________________________________________ > NumPy-Discussion mailing list > [email protected] > http://mail.scipy.org/mailman/listinfo/numpy-discussion >
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