Update cheatsheets

tldr/windows/py

@@ -0,0 +1,26 @@
+---
+syntax: markdown
+tags: [tldr, windows]
+source: https://github.com/tldr-pages/tldr.git
+---
+# py
+
+> Python Launcher for Windows that runs with specified Python version.
+> See also: `python`.
+> More information: <https://docs.python.org/3/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`