input: Write a function to calculate the average of five numbers entered by a user. The function should prompt the user for five inputs, calculate the average of those numbers, and print the result.
  assert calculate_average()=="The average is 3.0"
  assert calculate_average()=="The average is 7.0"
  assert calculate_average()=="The average is 5.0"
  assert calculate_average()=="The average is 4.0"
  assert calculate_average()=="The average is 6.0"
output: def calculate_average():
      total = 0
      for i in range(5):
          num = float(input("Enter a number: "))
          total += num
      average = total / 5
      return f"The average is {average}"