Will 32bit and 64bit Python collide?

Possible Duplicate:
Can I install Python 2.7.1 64bit along side of an exsiting 32bit install on OS X?

I have a MacBook Pro running 10.7.3 Lion with Python 2.7 64bit installed by default. I need a program called VPython for a physics class I am in and VPython site says it doesnt work with 64 bit Python. So I was wondering if i had both 32 bit and 64bit Python 2.7 on my MacBook, if they would collide or cause problems. I know i could do Python 3.1 version of VPython, but I think most of the instructions the professor gives us is for Python 2.7. Thanks for any help regarding this.

Solution

Without installing another python you can switch between the default 32/64 bits using env:

$ python -c 'import sys; print sys.maxint'
9223372036854775807
$ export VERSIONER_PYTHON_PREFER_32_BIT=yes
$ python -c 'import sys; print sys.maxint'
2147483648

See man python on OSX.

You can also execute the binary with arch -i386:

$ /usr/bin/python2.7 -c 'import sys; print sys.maxint'
9223372036854775807
$ arch -i386 /usr/bin/python2.7 -c 'import sys; print sys.maxint'
2147483648