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Fri Apr 11 23:58:37 CEST 2008 · https://mail.python.org/pipermail/python-dev/2008-April/078580.html

> My question is simple:

It's also off-topic for python-dev, which is about the development
of Python, not the development with Python.

> is there any problem when installing/using both
> 32- and 64-bit Python's on the same machine? I'm more concerned about
> header files (those installed under /usr/include/python-2.x), because as
> far as I could see there's nothing similar to a "#ifdef USE_64BIT" or
> something on them.

You can't install them both into the same prefix (obviously, as they
would overwrite their binary files).

With two installation, use the header files you got from the 32-bit
install for 32-bit extensions/embedding, and the header files you
got from the 64-bit install for 64-bit extensions/embedding. The
only header file that will actually differ is pyconfig.h.

Regards,
Martin

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[Python-Dev] Python 32- and 64-bit living together