Python: Command-line arguments

This documentation is part of the Learning Python guide. View the full guide here: A comprehensive Python guide.

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Command-line arguments allow you to pass input values to a Python script when executing it from the command line. The sys.argv list provides access to these arguments, making it easy to parse and use them within your script.

import sys

arguments = sys.argv

Example:

# Save this code in a file named "cmd_args.py"
# Run with: python cmd_args.py Alice
# Expected output: Hello, Alice!
import sys

if len(sys.argv) > 1:
  print(f"Hello, {sys.argv[1]}!")
else:
  print("No arguments provided.")