An issue is a bug in the kata. If you have a question, post with the flag question.

You must never use input here. You must just write a function that returns the correct result. The tests control your function with different inputs they create themselves and check if it works fine. Also, you must always use the return statement, not print. What you print is not taken into account by the tests.

In brief:

def name_of_the_function(arguments_of_the_function):
  #  write your code
  return the_result