code: def parse_args(argv):
      
      parser = make_parser()
  
      opts, args = parser.parse_args(argv[1:])
  
      # Use APPENGINEPY_SDK_VERSION if set.
      if not args and (sdk_version_key in os.environ):
          args = (os.environ[sdk_version_key],)
  
      return opts, args
docs: Returns a tuple of (opts, args) for arguments.