Web Reference: Mar 26, 2026 · The add_argument() method must know whether an optional argument, like -f or --foo, or a positional argument, like a list of filenames, is expected. The first arguments passed to add_argument() must therefore be either a series of flags, or a simple argument name. 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.
YouTube Excerpt: Use this pattern to check for
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