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# py
> Python Launcher for Windows that runs with specified Python version.
> See also: `python`.
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> More information: <https://docs.python.org/using/windows.html#python-launcher-for-windows>.
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- Start a REPL (interactive shell), optionally with arguments supported by `python` (like `-c` , `-m` , etc.):
`py {{python_arguments}}`
- Execute a specific Python file:
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`py {{path\to\file.py}}`
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- Run specific Python version. If the version is missing, and `PYLAUNCHER_ALLOW_INSTALL` environment variable is set, auto-install via Microsoft Store or Winget:
`py {{-2|-3.7|...}}`
- List installed Python versions:
`py --list`
