MVC 模式代表 Model-View-Controller（模型-视图-控制器） 模式。这种模式用于应用程序的分层开发。
- Model（模型） - 模型代表一个存取数据的对象或 JAVA POJO。它也可以带有逻辑，在数据变化时更新控制器。
- View（视图） - 视图代表模型包含的数据的可视化。
- Controller（控制器） - 控制器作用于模型和视图上。它控制数据流向模型对象，并在数据变化时更新视图。它使视图与模型分离开。
quotes = (‘A man is not complete until he is married. Then he is finished.‘, ?????????‘As I said before, I never repeat myself.‘, ?????????‘Behind a successful man is an exhausted woman.‘, ?????????‘Black holes really suck...‘, ‘Facts are stubborn things.‘)class QuoteModel: ???def get_quote(self, n): ???????try: ???????????value = quotes[n] ???????except IndexError as err: ???????????value = ‘Not found!‘ ???????return valueclass QuoteTerminalView: ???def show(self, quote): ???????print(‘And the quote is: "{}"‘.format(quote)) ???def error(self, msg): ???????print(‘Error: {}‘.format(msg)) ???def select_quote(self): ???????return input(‘Which quote number would you like to see?‘)class QuoteTerminalController: ???def __init__(self): ???????self.model = QuoteModel() ???????self.view = QuoteTerminalView() ???def run(self): ???????valid_input = False ???????while not valid_input: ???????????n = self.view.select_quote() ???????????try: ???????????????n = int(n) ???????????except ValueError as err: ???????????????self.view.error("Incorrect index ‘{}‘".format(n)) ???????????else: ???????????????valid_input = True ???????quote = self.model.get_quote(n) ???????self.view.show(quote)def main(): ???controller = QuoteTerminalController() ???while True: ???????controller.run()if __name__ == ‘__main__‘: ???main()设计模式， ?mvc 模型视图控制器模式（8）
原文地址：https://www.cnblogs.com/ydf0509/p/8525949.html