Python设计模式之MVC模式

# -*- coding: utf-8 -*-
# author：baoshan

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 subborn things.')


class QuoteMode:
    def get_quote(self, n):
        try:
            value = quotes(n)
        except IndexError as err:
            value = 'Not found!'
        return value


class 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.mode = QuoteMode()
        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.mode.get_quote(n)
        self.view.show(quote)


def main():
    controller = QuoteTerminalController()
    while True:
        controller.run()

if __name__ == '__main__':
    main()

代码展示，如何设计MVC模式

参考自：精通Python设计模式 之 MVC模式