PCs' Python Upgrades from 2.4 to 2.5

Python 2.5

Python for Windows requires not environment variables but registry keys

• [HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\2.5]
• [HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\2.5\InstallPath]
  =c:/Python25/
• [HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\2.5\InstallPath\InstallGroup]
  =Python 2.5
• [HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\2.5\Modules]
• [HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\2.5\PythonPath]
  ="c:/Python25/Lib;c:/Python25/DLLs;c:/Python25/Lib/lib-tk

At first, I had insalled the Python 2.5 form msi. Then, I I installed py2exe and wxPython, which require Python 2.5, by installer execution files.