This is a collection of example programs to show how you can use the standard Python module argparse to handle command-line aruguments.

• sys_argv.py: sys.argv
• one_arg.py: one positional argument
• two_args.py: two positional arguments
• nargs2.py: another way to handle two positional arguments
• nargs+.py: one or more positional arguments
• manual.py: manually validating an argument inside get_args
• choices.py: using choices to restrict values
• cat_n.py: a Python implementation of cat -n