input: def Rectangle_Class() -> str:
      """
      Create a Python class called Rectangle to represent a two-dimensional rectangle with a length and width.
      The class should have a method 'area' that calculates and returns the area of the rectangle.
      For example, if you create an instance of Rectangle with length=5 and width=3, calling the area method should return 15.
      >>> 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:
      def __init__(self, length, width):
          self.length = length
          self.width = width
  
      def area(self):
          return self.length * self.width'''