python3-configargparse - 1.2.3-1 main

Applications with more than a handful of user-settable options are best
configured through a combination of command line args, config files,
hard-coded defaults, and in some cases, environment variables.
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Python’s command line parsing modules such as argparse have very limited
support for config files and environment variables, so this module extends
argparse to add these features.
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This is the Python 3 module.