input: 
  def create_rectangle_class() -> str:
      """Create a Python class called Rectangle to represent a two-dimensional rectangle with a length and width.
      The class should have an __init__ method to initialize the length and width, and an area method to calculate and return the area.
      >>> create_rectangle_class()
      'class Rectangle:\\n    def __init__(self, length, width):\\n        self.length = length\\n        self.width = width\\n\\n    def area(self):\\n        return self.length * self.width'
      """
  
output:     return 'class Rectangle:\n    def __init__(self, length, width):\n        self.length = length\n        self.width = width\n\n    def area(self):\n        return self.length * self.width'