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Editorial Team
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Asked: 2026-06-13T00:14:17+00:00

When running any Python script (by double clicking a .py file on Windows 7)

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When running any Python script (by double clicking a .py file on Windows 7) I’m getting a Python: failed to set __main__.__loader__ error message. What to do?

More details:

  • The scripts work on other machines.
  • The only version of Python installed on the machine on which the scripts don’t work is 3.2.
  • I get the same error when trying to run the script from the Windows shell (cmd).

  • Here’s an example for the content of a file named “hey.py” that I failed to run on my machine:

    print('hey')

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1 Answer

  1. Editorial Team

    I had the same problem. Turns out it was because the file was stored in a directory with a name not in English (Hebrew in my case).
    Make sure the path to the file contains only English letters.

    http://bugs.python.org/issue16218

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