Why Isn't My Python Module Recognized After Adding to PYTHONPATH on Windows?

Troubleshooting PYTHONPATH Additions in Windows for Module Recognition

To resolve the issue of modules being recognized after adding a directory to PYTHONPATH in Windows, it is necessary to not only include the directory path but also ensure that the Python installation directory is added to the path.

Solution:

In the Windows Environment Variables settings, ensure the following modifications are made:

1. Create a new system variable named "PythonPath".
2. Set the "PythonPath" variable value as follows:

C:\Python27\Lib;C:\Python27\DLLs;C:\Python27\Lib\lib-tk;C:\other-folders-on-the-path

3. Append the following path to the end of the "Path" variable under system variables:

C:\Python27;

After making these changes, modules should be recognized successfully when accessing the directory added to the PYTHONPATH.

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