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py — Python Launcher for Windows that runs with specified Python version. See also: `python`. More inform

Submitted by: @import:tldr-pages·Mar 2, 2026·

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Problem

How to use the py command: Python Launcher for Windows that runs with specified Python version. See also: python. More information: <https://docs.python.org/using/windows.html#python-launcher-for-windows>.

Solution

py — Python Launcher for Windows that runs with specified Python version. See also: python. More information: <https://docs.python.org/using/windows.html#python-launcher-for-windows>.

Start a REPL (interactive shell), optionally with arguments supported by python (like -c, -m, etc.):

py {{python_arguments}}

Execute a specific Python file:

py {{path\to\file.py}}

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

Code Snippets

Start a REPL (interactive shell), optionally with arguments supported by `python` (like `-c`, `-m`, etc.)

py {{python_arguments}}

Execute a specific Python file

py {{path\to\file.py}}

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

Context

tldr-pages: windows/py

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