Dependabot can't resolve your Python dependency file

[Auric-Manteo]

We get the following error. There is no .python_version file in our repository.
I'd upgrade the Python version to the latest one everywhere and hope this will fix the issue.
However it would be great to understand why this happens in the first place and how it can be prevented from happening in the future.
I didn't set up dependabot so I don't quite know where it runs so any insight on how this works is appreciated.
If I read the error message correctly it is running with a specific Python version and that is a different one from what we have in our pyproject.toml requires_python configurations.
I'd like it to work even if that version is different of course, but I guess there is some reason why this doesn't work?

Dependabot failed to update your dependencies because there was an error resolving your Python dependency files.

Dependabot encountered the following error:

Python version incompatibility: Using CPython 3.11.14 interpreter at: /usr/local/.pyenv/versions/3.11.14/bin/python3.11
error: The Python request from `.python-version` resolved to Python 3.11.14, which is incompatible with the project's Python requirement: `==3.11.10` (from `project.requires-python`)
Use `uv python pin` to update the `.python-version` file to a compatible version

[Troubleshoot Dependabot errors](https://docs.github.com/github/managing-security-vulnerabilities/troubleshooting-dependabot-errors)```



Thanks!

[Auric-Manteo]

Ok, so we don't have any .python-version file in our repository. I'm guessing that is wherever dependabot runs from and as such the error message could have been more useful.
What we ended up doing was to relax the Python version restriction in the pyproject.toml files which solved the error above but resulted in a different error so we had to also relax the restriction of the version in the lock files.
I think getting a hint about that in the error message would be particularly helpful for everyone running into the same issue which I imagine is a significant amount of users.

There was yet another error which we solved by grouping dependencies together which was again far from an intuitive solution looking at the error message we saw. Just FYI if you are looking into improving that side of things.

Thanks!

[aniruddhaadak80]

This 'cannot resolve' error usually occurs if you're using a private PyPI index or if your pyproject.toml / requirements.txt contains syntactical errors or missing Git dependencies. Make sure any private registries are properly authenticated via Dependabot secrets in your repository settings.