(default: %(default)s)
%(heading)s:
%(prog)s: error: %(message)s\n
%r is not callable
'required' is an invalid argument for positionals
.__call__() not defined
ambiguous option: %(option)s could match %(matches)s
argument "-" with mode %r
argument %(argument_name)s: %(message)s
can't open '%(filename)s': %(error)s
cannot have multiple subparser arguments
cannot merge actions - two groups are named %r
conflicting subparser alias: %s
conflicting subparser: %s
dest= is required for options like %r
expected at least one argument
expected at most one argument
expected one argument
ignored explicit argument %r
invalid %(type)s value: %(value)r
invalid choice: %(value)r (choose from %(choices)s)
invalid conflict_resolution value: %r
invalid option string %(option)r: must start with a character %(prefix_chars)r
mutually exclusive arguments must be optional
not allowed with argument %s
one of the arguments %s is required
options
positional arguments
show program's version number and exit
show this help message and exit
subcommands
the following arguments are required: %s
unexpected option string: %s
unknown parser %(parser_name)r (choices: %(choices)s)
unrecognized arguments: %s
usage: