code: def set_gnu_getopt(self, gnu_getopt=True):
      
      self.__dict__['__use_gnu_getopt'] = gnu_getopt
      self.__dict__['__use_gnu_getopt_explicitly_set'] = True
docs: Sets whether or not to use GNU style scanning.
  
      GNU style allows mixing of flag and non-flag arguments. See
      http://docs.python.org/library/getopt.html#getopt.gnu_getopt
  
      Args:
        gnu_getopt: bool, whether or not to use GNU style scanning.