input: Write a function to calculate and print the length of a given string. The function should take a string as input and print a message displaying the length of the string.
  
  def length_of_string(string):
      print("Length of the given string is:", len(string))
  
  assert length_of_string("Python") == None
  assert length_of_string("Programming") == None
  assert length_of_string("") == None
output: def length_of_string(string):
      print("Length of the given string is:", len(string))