input: Write a function to calculate the average of five numbers entered by the user. The function should take no parameters, read five numbers from the input, calculate their average, and print it.
  assert calculate_average()=="The average is 3.0"
  assert calculate_average()=="The average is 5.0"
  assert calculate_average()=="The average is 7.5"
  assert calculate_average()=="The average is 2.8"
  assert calculate_average()=="The average is 4.2"
output: def calculate_average():
      numbers = []
      for _ in range(5):
          numbers.append(float(input()))
      average = sum(numbers) / 5
      print(f"The average is {average}")