Problem with pathlib ? - Printable Version

Problem with pathlib ? - Printable Version

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Problem with pathlib ? - Ota - Nov-10-2024

I have trouble while using the pathlib. Statement: mypath = pathlib.Path(sys.argv[0]).parent works fine on Windows (Python 3.12.6). On Linux (Debian Bookworm, Python 3.11.2) the same statement triggers the error:

Error:Traceback (most recent call last):
  File "/home/lado/programs/wol.py", line 43, in <module>
    mypath = pathlib.Path(sys.argv[0]).parent

My first thought was that the package platform was not installed. But when I checked which modules were installed with >>> help('modules'), it turned out that the platform module was installed, so it should be working. I know I can work around it by just parsing the path string 'barefoot', but I would like to understand why this statement is not working on Linux the way it should?!

RE: Problem with pathlib ? - Gribouillis - Nov-10-2024

The error message is not complete. Please post the entire error message. It contains information to diagnose the problem.

RE: Problem with pathlib ? - Ota - Nov-11-2024

(Nov-10-2024, 09:59 AM)Gribouillis Wrote: The error message is not complete. Please post the entire error message. It contains information to diagnose the problem.

Hi, I found out what the trouble was. When I returned here to update my post, I found your reply. Yes, the error message is incomplete. I think I made an error while posting and did not notice it then.
Anyway, the reason was that I messed up with the virtual environment, and when I fixed it all worked as expected.

RE: Problem with pathlib ? - MoMoProxy - Nov-11-2024

The problem described was initially about using pathlib.Path(sys.argv[0]).parent not working as expected on a Linux system with Python 3.11.2. The user "Ota" encountered this issue and suspected it was related to the platform module not being installed, but later realized that was not the case.

Key Points:
Issue on Linux:

The code worked fine on Windows but failed on Linux (Debian Bookworm).
The traceback showed an error when trying to resolve the path using pathlib.
Misdiagnosis:

The user initially thought it might be a missing package issue.
They verified installed modules using help('modules') but didn't resolve the problem.
Root Cause:

The actual issue turned out to be a problem with the virtual environment setup.
It was not related to the pathlib module itself but rather to the virtual environment configuration on Linux.
Solution:

After fixing the virtual environment, the code worked as expected on Linux.
Explanation:
In Python, when using virtual environments, Python may not properly load or recognize installed packages if the environment is misconfigured or not activated correctly.
This can cause modules like pathlib to behave unexpectedly, even though they are part of the standard library.
Ensuring that the virtual environment is activated correctly (source venv/bin/activate) or checking if it is correctly set up often resolves such issues.
Conclusion:
If you encounter similar issues:

Verify that your virtual environment is activated.
Ensure that Python versions are consistent across environments (e.g., using Python 3.12.6 in both Windows and Linux might have prevented this issue).
If an error occurs, always share the complete traceback for better diagnosis.
In this case, it was a user setup error rather than a bug in the code or pathlib itself.