code: def eprint(*args, **kwargs):
      
      end = kwargs.get("end", "\n")
      sep = kwargs.get("sep", " ")
      (filename, lineno) = inspect.stack()[1][1:3]
      print("{}:{}: ".format(filename, lineno), end="")
      print(*args, end=end, file=sys.stderr, sep=sep)
docs: Print an error message to standard error, prefixing it with
      file name and line number from which method was called.