[참고]
Argparse Tutorial
https://docs.python.org/3.9/howto/argparse.html#id1
https://docs.python.org/3/library/argparse.html?highlight=argparse
- argparse 모듈은 커맨드 라인 인터페이스에 적용하기 쉽게 만들어진 모듈
- argparse 모듈은 자동으로 help를 생성하고 사용자가 프로그램에 잘못된 인수를 넣으면 사용 메시지와 에러 메시지를 생성함
ArgumentParser objects
- class
argparse.ArgumentParser(prog=None, usage=None, description=None, epilog=None, parents=[], formatter_class=argparse.HelpFormatter, prefix_chars='-', fromfile_prefix_chars=None, argument_default=None, conflict_handler='error', add_help=True, allow_abbrev=True)
-
Create a new ArgumentParser object. All parameters should be passed as keyword arguments. Each parameter has its own more detailed description below, but in short they are:
- prog - The name of the program (default:
sys.argv[0])
- usage - The string describing the program usage (default: generated from arguments added to parser)
- description - Text to display before the argument help (default: none)
- epilog - Text to display after the argument help (default: none)
- parents - A list of
ArgumentParser objects whose arguments should also be included
- formatter_class - A class for customizing the help output
- prefix_chars - The set of characters that prefix optional arguments (default: ‘-‘)
- fromfile_prefix_chars - The set of characters that prefix files from which additional arguments should be read (default:
None)
- argument_default - The global default value for arguments (default:
None)
- conflict_handler - The strategy for resolving conflicting optionals (usually unnecessary)
- add_help - Add a
-h/--help option to the parser (default: True)
- allow_abbrev - Allows long options to be abbreviated if the abbreviation is unambiguous. (default:
True)
Changed in version 3.5: allow_abbrev parameter was added.
The following sections describe how each of these are used.