input: Write a function to demonstrate how to return multiple values from a Python function. The function should return two values, a string and an integer. The returned values should be assigned to two variables. Test cases should include calling the function and printing the values.
  assert get_multi_values()=="ABC", 123
  assert get_multi_values()=="ABC", 123
  assert get_multi_values()=="ABC", 123
  assert get_multi_values()=="ABC", 123
  assert get_multi_values()=="ABC", 123
output: def get_multi_values():
      return "ABC", 123