# Adapted from Python 3.6 trace.py
# Bug was in handling BUID_TUPLE_UNPACK created via
# *opts.arguments
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('filename', nargs='?')
parser.add_argument('arguments', nargs=argparse.REMAINDER)
opts = parser.parse_args(["foo", "a", "b"])
argv = opts.filename, *opts.arguments
assert argv == ('foo', 'a', 'b')