Web Reference: Mar 26, 2026 · All optional arguments and some positional arguments may be omitted at the command line. The default keyword argument of add_argument(), whose value defaults to None, specifies what value should be used if the command-line argument is not present. It is important that I can choose which optional parameters to pass in any combination. For example, (a, b, C, d, e), or (a, b, C, g, h), or (a, b, C, d, e, f, or all of them (these are my choices). Oct 27, 2025 · Now that you have some experience with optional arguments in Python, you can use the questions and answers below to check your understanding and recap what you’ve learned.
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