[Numpy-discussion] Problem installing NumPy with Python 3.2.2/MacOS X 10.7.2

Benjamin Root ben.root at ou.edu
Fri Dec 16 18:43:56 EST 2011

On Friday, December 16, 2011, McNicol, Adam <amcnicol at longroad.ac.uk> wrote:
> Hi There,
> I am very new to numpy and have really only started investigating it as
one of my students needs some functionality from matplotlib. I have managed
to install everything under Windows for work in class but I use a Mac at
home and have been struggling all night to get it to build and install.
> I should mention that I am using Python 3.2.2 both in school and at home
and it isn't an option to use Python 2.7 as all of the rest of my class is
taught in Python 3. I also have the most recent version of Xcode installed.
> I have installed the correct build of gcc-4.2 with Fortran (gcc-4.2
(Apple build 5666.3) with GNU Fortran 4.2.4 for Mac OS X 10.7 (Lion)) from
> I then followed the install instructions but the build fails with the
following message:
>   File "numpy/core/setup.py", line 271, in check_types
>     "Cannot compile 'Python.h'. Perhaps you need to "\
> SystemError: Cannot compile 'Python.h'. Perhaps you need to install
> I have got no idea what to do with this error message. Any help would be
much appreciated.
> Kind Regards,
> Adam.


Just a quick comment about matplotlib and py3k.  We have not yet released a
version for py3k.  Support is currently being worked on in the development
branch, but I have no clue about the level of testing it has received for
windows and macs.

Just a heads-up.

Ben Root
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