How do I install Python 2.7.3 32 bit and 64 bit on Windows side by side

Question

I have Windows Vista 64.

I have some projects requiring Python 2.7.3 64 bit and others requiring Python 2.7.3 32 bit (because some extensions do not work in 64 bit).

Answer 1

While installing 2nd python, for Register Extensions select "Entire feature will be unavailable" option. Python 64 Installation path will be in registry "HKLM:SOFTWARE\Python\PythonCore\2.7\InstallPath"

Python 64 bit PythonPath will be in "HKLM:SOFTWARE\Python\PythonCore\2.7\PythonPath"

Python 32 Installation path will be in registry "HKLM:SOFTWARE\Wow6432Node\Python\PythonCore\2.7\InstallPath"

Python 32 bit PythonPath will be in "HKLM:SOFTWARE\Wow6432Node\Python\PythonCore\2.7\PythonPath"