Web Reference: Dec 17, 2025 · In Python, command line arguments are values passed to a script when running it from the terminal or command prompt. They act like inputs, allowing you to change a program’s behavior without modifying the code. Learn how to use Python command line arguments with `sys.argv`, `getopt`, and `argparse`. Compare each method and build flexible, user-friendly scripts with real examples. Learn how to process and customize command-line arguments in Python, with examples from Unix utilities and Python libraries. Explore the origins, standards, and methods of Python command-line interface design.
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