input: Write a python function to calculate the sum of two numbers and print the result.
  assert sum_two_numbers(10, 20) == "The sum of 10 and 20 is 30"
  assert sum_two_numbers(5, 7) == "The sum of 5 and 7 is 12"
  assert sum_two_numbers(0, 0) == "The sum of 0 and 0 is 0"
output: def sum_two_numbers(a, b):
      result = a + b
      return f"The sum of {a} and {b} is {result}"