Recently, Python build started breaking if the GitHub repository contains a .python-version file.
This file should not have any effect on CircleCI build. The docker-in-docker’s Python version is totally separate from CircleCI’s Python, there is no need to match these.
This will break for example, if the repo contains a .python-version file (which is not 3.9.12 exactly, as of today).
build_base: docker: - image: cimg/python:3.9 steps: - checkout - setup_remote_docker: version: 20.10.11 - run: python -V; pip -V
There is an issue for this on cimg/python:
My workaround is to delete this file directly after checkout.
- checkout - run: rm .python-version
It fixes in my case, because I don’t need that file, but for people who do, this won’t work. Please consider this a bug. The two environments should be 100% separate.