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INFO: Python on 64-bit Vista

This article explains how to get Python working with XSI on 64-bit Vista systems. Note that you must use Python 2.6, because on 64-bit Vista, XSI cannot support older versions of Python.

1. Download PythonAMD64.zip (http://community.softimage.com/downloads.php?do=file&id=83).

   PythonAMD64.zip contains the files required to install Python 2.6 and pywin32 for both Intel and AMD 64-bit processor.

2. Turn off User Account Control (http://technet2.microsoft.com/WindowsVista/en/library/0d75f774-8514-4c9e-ac08-4c21f5c6c2d91033.mspx?mfr=true) (UAC).
   1. Click Start, and then click Control Panel.
   2. In Control Panel, click User Accounts.
   3. In the User Accounts window, click User Accounts.
   4. In the User Accounts tasks window, click Turn User Account Control on or off.
   5. If UAC is currently configured in Admin Approval Mode, the User Account Control message appears. Click Continue.
   6. Clear the Use User Account Control (UAC) to help protect your computer check box, and then click OK.
   7. Click Restart Now to apply the change right away, or click Restart Later and close the User Accounts tasks window.
3. Install the Visual C++ 2005 and 2008 Redistributables:
   • vcredist_x86.exe
   • vcredist_x64.exe
4. Install Python 2.6
   • python-2.6a3.amd64.msi
5. Add the python folder installation (e.g. C:\python26) to the PATH environment variable as the installer won't do it by default.
6. Install pywin32
   • pywin32-210.9.win-amd64.exe
7. Replace <python folder>\Lib\site-packages\win32com\client\genpy.py with the copy of genpy.py supplied with PythonAMD64.zip.

   NOTE: Required since string constants are not exposed to scripting. A bug has been logged to the pywin32 team for this.

8. Turn UAC back on.