Typarser is a library for command-line arguments parsing. It is designed to provide a more declarative way of defining positional and optional arguments to produce a typed result. Typarser allows you to use type-checking tools with the result of parsing and have auto-completion in text editors. It uses argparse for the actual parsing, but provides a new interface for specifying arguments.
Install and update using pip:
pip install -U typarser
from sys import argv
from typarser import Argument, Namespace, Option, Parser, Help
class Args(Namespace, description='Count lines with specific length'):
help = h = Help()
src = Argument(type=str, nargs='?', default='source.txt',
help='Source file name')
min = m = Option(type=int, help='Minimal line length')
max = M = Option(type=int, help='Maximal line length')
parser = Parser(Args)
cli_args = parser.parse(argv) $ python examples/quickstart.py -h
usage: quickstart.py [--help] [--min MIN] [--max MAX] [src]
Count lines with specific length
positional arguments:
src Source file name
optional arguments:
--help, -h show this help message and exit
--min MIN, -m MIN Minimal line length
--max MAX, -M MAX Maximal line length