让 argparse 也可以通过修饰器形式设置命令行参数

[ungrown]

https://github.com/mo-han/mo-han-toolbox/blob/8e2e92d0c1b771155bac463f836da34a94982b29/mylib/ez/argparse.py

单纯就是为了偷懒，形似 Click

#test.py

from mylib.ez.argparse import *
from mylib.ez import AttrName

pr = ParserRigger()
ro = RawObject
an = AttrName()  # an.attribute == 'attribute'


@pr.super_command()
@pr.argument(an.x)
@pr.argument(an.y)
@pr.argument(an.z)
@pr.flag(an.l, help='print in multiple lines')
@pr.call_map(an.x, ro(1111), an.z, UnknownArguments(), multi_line=an.l)
def xyz(x, y, z, more, multi_line=False):
    print(f'x={x}', f'y={y}', f'z={z}', 'and more', *more, sep='\n' if multi_line else ', ')


an.x = an.y = an.z = an.l = None

pr.parse_known_args()
pr.run()

>test
usage: test.py [-h] [-l] x y z
test.py: error: the following arguments are required: x, y, z

>test -h
usage: test.py [-h] [-l] x y z

positional arguments:
  x
  y
  z

optional arguments:
  -h, --help  show this help message and exit
  -l          print in multiple lines
  
>test 0 0 0 a b c
x=0, y=1111, z=0, and more, a, b, c

>test 0 0 0 a b c -l
x=0
y=1111
z=0
and more
a
b
c