CLI & Command-Line Tools

• Topics
• References

Python is an excellent language for building command-line tools, from simple scripts to sophisticated applications with rich argument parsing. The standard library provides argparse for robust argument handling, while third-party libraries like click and typer offer more developer-friendly interfaces with less boilerplate.

This section covers both approaches, helping you build command-line applications that handle arguments, options, subcommands, and user input gracefully.

Topics

• Argparse — Positional and optional arguments, type conversion, subparsers, mutually exclusive groups
• Click — Commands, options, prompts, subcommand groups, callbacks, pass_context

References

• argparse — Parser for command-line options
• Click — Python composable command line utilities
• Typer — Build great CLIs with Python type hints