Question 1

How to parse sub-commands with akamensky/argparse?

Accepted Answer

Use parser.NewCommand() to create nested commands, which are parsed before arguments and support the same options as the parser. Check the examples directory for implementations, like in the basic usage snippet.

Question 2

akamensky/argparse vs Cobra: which should I use?

Accepted Answer

akamensky/argparse is better for Python-like simplicity and direct feature parity with argparse, but Cobra has a larger ecosystem, more community support, and built-in features like auto-completion. Choose based on your need for familiarity versus extensibility.

Question 3

Can I validate arguments with custom functions in akamensky/argparse?

Accepted Answer

Yes, use the Validate field in the Options struct to define a lambda function for custom validation, as shown in the Basic Option Structure section. This allows checking argument values against specific criteria.

Question 4

What happens if I define a shorthand argument with two characters?

Accepted Answer

It will fail because shorthand arguments must be a single character, as stated in the Caveats. You must use an empty string or a single character to avoid errors during parsing.

Question 5

How to handle positional arguments with default values?

Accepted Answer

Use parser.StringPositional() or similar methods with the Options struct setting a Default value. Positionals are parsed breadth-first and use defaults only if the command happened, per the Positionals caveat.

Question 6

Is akamensky/argparse actively maintained?

Accepted Answer

The README shows ongoing contributions with tasks like improving code quality and test coverage, but it's less active than alternatives like Cobra. Check GitHub for recent updates and issue resolution.

argparse

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