MVC模式：python案例

標籤：return   ike   com   print   for   except   let   else   get   

 

 

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()

　　

MVC模式：python案例