input: 
  def calculate_circle_area(Pi: float = 3.14) -> None:
      """Prompt the user for the radius of a circle and calculate its area using the given Pi value.
      >>> calculate_circle_area()
      Please enter the radius of the circle: 5
      The area of the circle is: 78.5
      """
      # Get radius from user
      radius = float(input("Please enter the radius of the circle: "))
      
      # Calculate the circle area
      area = Pi * radius ** 2
      
      # Print the area
      print("The area of the circle is:", area)
  
output:     # Get radius from user
      radius = float(input("Please enter the radius of the circle: "))
      
      # Calculate the circle area
      area = Pi * radius ** 2
      
      # Print the area
      print("The area of the circle is:", area)