February 19, 2003 | Fredrik Lundh
Some Python distributions add information to the Windows registry when installed. This information is used by certain tools, such as the win32allinstaller and Windows installers generated by the distutils (dead link)package.
If you’re using an unregistered Python environment, you’ll usually end up with an empty list of alternatives on the installer’s “Select Python installation to use” screen.
The following script registers the current interpreter. The script should work for Python 2.0 and later.
Note that there can be only one registered interpreter for each major Python release (e.g. 2.0, 2.1, 2,2 etc).
Register a Python Interpreter # # script to register Python 2.0 or later for use with win32all # and other extensions that require Python registry settings # # written by Joakim Löw for Secret Labs AB / PythonWare # # source: # http://www.pythonware.com/products/works/articles/regpy20.htm import sys from _winreg import * # tweak as necessary version = sys.version[:3] installpath = sys.prefix regpath = "SOFTWARE\\Python\\Pythoncore\\%s\\" % (version) installkey = "InstallPath" pythonkey = "PythonPath" pythonpath = "%s;%s\\Lib\\;%s\\DLLs\\" % ( installpath, installpath, installpath ) def RegisterPy(): try: reg = OpenKey(HKEY_LOCAL_MACHINE, regpath) except EnvironmentError: try: reg = CreateKey(HKEY_LOCAL_MACHINE, regpath) SetValue(reg, installkey, REG_SZ, installpath) SetValue(reg, pythonkey, REG_SZ, pythonpath) CloseKey(reg) except: print "*** Unable to register!" return print "--- Python", version, "is now registered!" return if (QueryValue(reg, installkey) == installpath and QueryValue(reg, pythonkey) == pythonpath): CloseKey(reg) print "=== Python", version, "is already registered!" return CloseKey(reg) print "*** Unable to register!" print "*** You probably have another Python installation!" if __name__ == "__main__": RegisterPy()(To download, triple-click on the first line to select the entire script, and copy the text into your favourite text editor.)
If you need to reverse the above, you can add the following function to the script (code provided by Martin Lamar):
Unregister a Python Interpreter def UnRegisterPy(): try: reg = OpenKey(HKEY_LOCAL_MACHINE, regpath) except EnvironmentError: print "*** Python not registered?!" return try: DeleteKey(reg, installkey) DeleteKey(reg, pythonkey) DeleteKey(HKEY_LOCAL_MACHINE, regpath) except: print "*** Unable to un-register!" else:print "--- Python", version, "is no longer registered!"
中文详见：http://www.cnblogs.com/thinksasa/archive/2013/08/26/3283695.html
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