New submission from Jurko Gospodnetić: When running the Python Windows installer 'for all users', the 32-bit installation and the 64-bit installation each gets a separate registration in the Windows registry. E.g. under:
HKEY_LOCAL_MACHINE\Software\Python\PythonCore\3.4 and: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Python\PythonCore\3.4 However, when running the installer 'for the current user only', the 32-bit and the 64-bit installation both use the same Windows registry key: HKEY_CURRENT_USER\Software\Python\PythonCore\3.4 Note that a 64-bit installation does not automatically uninstall a previous 32-bit installation in either case, or vice versa. As I understand it, whichever installation you use, you should be able to run a specific Python interpreter using the py.exe runner, as in: py.exe -3.4 py.exe -3.4-32 As it stands now - both of those run the same interpreter when they have been installed 'for the current user only', although when running 'py.exe -3.4-32' the runner will make an extra check and reject running the Python executable if the 64-bit version was installed last. So: 1. If you install the 64-bit version first and then the 32-bit version, both 'py.exe -3.4' & 'py.exe -3.4-32' run the 32-bit executable. 2. If you install the 32-bit version first and then the 64-bit version, 'py.exe -3.4' runs the 64-bit version, and 'py.exe -3.4-32' exits with an error. ---------- components: Installation, Windows messages: 213045 nosy: Jurko.Gospodnetić priority: normal severity: normal status: open title: Windows 'for current user' installation - 32/64-bit registrations overwrite each other versions: Python 3.3, Python 3.4 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue20883> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
