input: Write a function to calculate the average of five numbers entered by a user. The function should take no input parameters, prompt the user to enter five numbers, calculate their average, and print the result.
  
  
  def calculate_average():
      nums = []
      for i in range(5):
          nums.append(int(input("Please enter number: ")))
      average = sum(nums) / len(nums)
      print("The average is ", average)
  
  # Example usage:
  calculate_average()
  
  assert calculate_average() # corresponds to the output "The average is X" where X is the average of the five numbers entered by the user.
output: def calculate_average():
      nums = []
      for i in range(5):
          nums.append(int(input("Please enter number: ")))
      average = sum(nums) / len(nums)
      print("The average is ", average)