这是一种黑客手段，但效果很好：
检查未添加的参数并添加它们
import argparseparser = argparse.ArgumentParser()parser.add_argument("foo")parser.add_argument("-bar", type=int)# parser can have any arguments, whatever you want!parsed, unknown = parser.parse_known_args() # this is an 'internal' method# which returns 'parsed', the same as what parse_args() would return# and 'unknown', the remainder of that# the difference to parse_args() is that it does not exit when it finds redundant argumentsfor arg in unknown: if arg.startswith(("-", "--")): # you can pass any arguments to add_argument parser.add_argument(arg, type=<your type>, ...)args = parser.parse_args()例如：
python3 arbitrary_parser.py ha -bar 12 -extra1 value1 -extra2 value2
那么结果将是
args = Namespace(bar=12, foo='ha', extra1='value1' extra2='value2')
