'''
Write a program to solve a Sudoku puzzle by filling the empty cells. A sudoku solution must satisfy all of the following rules: Each of the digits 1-9 must occur exactly once in each row.
generate working python code that implements the Storyboard class and Scene class
'''

class Scene:
    def __init__(self, name, duration):
        self.name = name
        self.duration = duration

    def play(self):
        print(f"Playing scene {self.name} for {self.duration} seconds")

class Storyboard:
    def __init__(self, name):
        self.name = name
        self.scenes = []

    def add_scene(self, scene):
        self.scenes.append(scene)

    def play(self):
        print(f"Playing storyboard {self.name}")
        for scene in self.scenes:
            scene.play()