Get unknown args after multiple parse_known_args calls

Question

Is there a way to get the unparsed args after multiple argparse.parse_known_args() calls?

For example, I've got the following code:

import argparse, sys

def parse1():
  parser = argparse.ArgumentParser()
  parser.add_argument("--foo", action="store_true")
  args = parser.parse_known_args()[0]
  print("foo: ", args.foo)

def parse2():
  parser = argparse.ArgumentParser()
  parser.add_argument("--bar", action="store_true")
  args, unknown = parser.parse_known_args()
  print("bar: ", args.bar)
  print("unknown: ", unknown)

sys.argv += ["--foo", "--bar", "--last"]
parse1()
parse2()

"""
Outputs: 

foo:  True
bar:  True
unknown:  ['--foo', '--last']
"""

I wish to somehow get the unknown vars of only '--last', which was not parsed in parse1() or parse2()

Any ideas how?

Answer 1

What I ended up doing:

def pop_unknown_args(parser: ArgumentParser) -> Namespace:
    args, unknown = parser.parse_known_args()
    sys.argv = [sys.argv[0]] + unknown
    return args

hpaulj, thanks for the comment