pythonwin64

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

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).

How do I prevent the Python 2.7.3 MSI installer (32 or 64 bot) from deleting the other version.

Side by side worked for me with Python 2.7.2 without problems.

Solution

  • This appears to be working for me on Windows 7 64 bit. Choose one version to be your default installation, e.g. 64 bit, and install it first. Before doing anything else install the other version.

    Specify a different installation directory and in the Customize Python 2.7.3 screen select Register Extensions and select Entire feature will be unavailable.