argparses

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argparse — Parser for command-line options, arguments and sub-commands

Argparse

Name	Description	Values
action	Specify how an argument should be handled	'store', 'store_const', 'store_true', 'append', 'append_const', 'count', 'help', 'version'
choices	Limit values to a specific set of choices	['foo', 'bar'], range(1, 10), or Container instance
const	Store a constant value
default	Default value used when an argument is not provided	Defaults to None
dest	Specify the attribute name used in the result namespace
help	Help message for an argument
metavar	Alternate display name for the argument as shown in help
nargs	Number of times the argument can be used	int, '?', '*', or '+'
required	Indicate whether an argument is required or optional	True or False
type	Automatically convert an argument to the given type	int, float, argparse.FileType('w'), or callable function