argparse-patterns

Python's built-in argparse module for CLI argument parsing - no external dependencies required.

Overview

Provides comprehensive argparse patterns using only Python standard library. Includes subparsers for nested commands, choices for validation, custom actions, argument groups, and mutually exclusive options.

Instructions

Basic Parser Setup

1. Import argparse and create parser with description
2. Add version info with action='version'
3. Set formatter_class for better help formatting
4. Parse arguments with parser.parse_args()

Subparsers (Nested Commands)