from __future__ import print_function
 
script = """
 
import argparse
import sys
 
parser = argparse.ArgumentParser(description="This is an example.")
parser.add_argument('file', nargs='?', default='', help='specifies a file.')
parser.add_argument('--file', help='specifies a file.')
 
args = parser.parse_args()
print("{} -> {}".format(sys.argv[1:], args))
 
# check for file argument
if not args.file:
    raise Exception('Missing "file" argument')
"""
import shlex
import sys
from subprocess import Popen, PIPE, STDOUT
 
for line in sys.stdin:
    args = shlex.split(line)
    print("run with {}".format(args))
    p = Popen([sys.executable, "-c", script] + args, stdout=PIPE, stderr=STDOUT)
    print(p.communicate()[0].decode())

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YWJjCi0tZmlsZSBhYmMKCi0tZmlsZSBhYmMgZGVmCg==

abc
--file abc

--file abc def