Create a file named .python-version at your project's root that pins the Python version for pyenv and compatible tools.
Python 2 was a monster success. It powered early Google, YouTube, Dropbox, and countless scientific projects. It was the language that taught a generation how to code.
: A Just-In-Time compiler providing significant foundational performance boosts. Enhanced Interpreter
If you are looking to generate or understand a file, this is a configuration file used by version managers (like pyenv ) to automatically switch Python versions when entering a specific project directory. .python version
: Guarantees that every developer on a team uses the exact same patch or minor version of Python.
When you cd into that directory, tools like pyenv , rye , or poetry read this file and instantly switch the active Python interpreter to that specific version.
: Its human-readable code makes it accessible for beginners while remaining powerful for experts [5.4]. Create a file named
I can provide the exact command scripts to integrate this file seamlessly into your current daily development pipeline. Share public link
Python 3.11.4
# Load pyenv virtualenv or standard venv layout python $(cat .python-version) It was the language that taught a generation how to code
You can use actions like actions/setup-python to automatically read the file, preventing you from hardcoding version strings into your YAML workflows.
Be precise with your versioning. Writing 3.11 tells the manager to grab the latest minor release available locally. Writing 3.11.2 locks the environment down to the exact patch, which is highly recommended for production stability. Pair with Dependency Locks
You can also create the file using any text editor. It should contain only the version number: 3.12.1 Use code with caution.
Hardcoding a single base version globally across your system frequently breaks project configurations when collaborating on different codebases. Use specialized environment management tools to avoid global runtime pollution: 1. Pyenv (macOS & Linux)
The .python-version file is a simple, plaintext configuration file used by environment managers to automatically dictate which version of Python should be active inside a specific directory. What is a .python-version File?