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import argparse
import platform
class HelpAction(argparse._HelpAction):
def __call__(self, parser, namespace, values, option_string=None):
formatter = parser._get_formatter()
formatter.add_usage(parser.usage,
parser._actions,
parser._mutually_exclusive_groups)
formatter.start_section(parser._optionals.title)
formatter.add_text(parser._optionals.description)
formatter.add_arguments(parser._optionals._group_actions)
formatter.end_section()
subparsers_actions = [
action for action in parser._actions
if isinstance(action, argparse._SubParsersAction)]
for subparsers_action in subparsers_actions:
# get all subparsers and print help
subparsers = subparsers_action.choices
for subaction in subparsers_action._get_subactions():
subparser = subparsers[subaction.dest]
usage = formatter._format_actions_usage(subparser._actions, [])
usage_parent = formatter._format_actions_usage(filter(
lambda a: not (isinstance(a, HelpAction) or isinstance(a, argparse._SubParsersAction)),
parser._actions), [])
formatter.start_section("{} {} {} {}".format(formatter._prog,
usage_parent,
subaction.dest,
usage))
formatter.add_text(subaction.help)
formatter.add_arguments(subparser._positionals._group_actions)
formatter.add_arguments(filter(lambda a: not isinstance(a, argparse._HelpAction),
subparser._optionals._group_actions))
formatter.end_section()
print(formatter.format_help())
parser.exit(0)
def format_subcommands_help(parser: argparse.ArgumentParser):
subparsers_actions = [
action for action in parser._actions
if isinstance(action, argparse._SubParsersAction)]
formatter = parser._get_formatter()
formatter.add_usage(parser.usage,
parser._actions,
parser._mutually_exclusive_groups)
formatter.start_section("Choose subcommand")
for subparsers_action in subparsers_actions:
formatter.add_argument(subparsers_action)
formatter.end_section()
return formatter.format_help()
def get_default_serial_port() -> str:
if platform.system() == "Windows":
return 'COM3'
else:
return '/dev/ttyUSB0'
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