input: Write a function to modify the given python code to prompt the user to enter the value of radius to calculate the area of a circle. The function should return the modified code as a string.
  assert edit_code(
  """
  # Calculate area of a circle
  
  Pi = 3.14
  
  # 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)
  """
  )=="""
  # Calculate area of a circle
  
  Pi = 3.14
  
  # 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: def edit_code(code):
      return code