input: Write a function to print the length of a given string. The function should take a single string argument and print the length of the string.
  assert print_string_length("Python")==None
  assert print_string_length("Hello")==None
  assert print_string_length("12345")==None
  assert print_string_length("")==None
output: def print_string_length(s):
      print(len(s))