Question

运行此代码时出现以下错误：

属性错误：DisplayWelcome没有属性'completeKey'

import controller.game_play
    import cmd

    class DisplayWelcome(cmd.Cmd):
        """Welcome user to game"""
        def __init__(self):
            self.do_greet()

        prompt = 'ENTER'
        intro = '\n'.join(['        Welcome To   ',
         '...ZOMBIE IN MY POCKET...'])

        def do_greet(self):
            print ('        Welcome To   ')
            print ("...ZOMBIE IN MY POCKET...")

        def do_inform(self, line):
            k = input('Enter a letter')
            print (k)


    def main():
        d = DisplayWelcome()
        #d.do_greet()
        d.cmdloop()
        s = controller.game_play.stuff()

    if __name__ == '__main__':
        main()

Answer 1

这很容易...... ;-) 您忘了调用父类的构造函数（cmd.Cmd）。在那里， completekey 属性会自动声明为默认值。这解决了问题！

import controller.game_play
import cmd

class DisplayWelcome(cmd.Cmd):
    """Welcome user to game"""
    def __init__(self):

        #### THIS IS THE LINE YOU FORGOT!!!!
        super(DisplayWelcome, self).__init__()
        # or cmd.Cmd.__init__(self)


        self.do_greet()

    prompt = 'ENTER'
    intro = '\n'.join(['        Welcome To   ',
     '...ZOMBIE IN MY POCKET...', '  Created by Ben Farquhar   '])

    def do_greet(self):
        print ('        Welcome To   ')
        print ("...ZOMBIE IN MY POCKET...")
        print ("  Created by Ben Farquhar   ")

    def do_inform(self, line):
        k = input('Enter a letter')
        print (k)


def main():
    d = DisplayWelcome()
    #d.do_greet()
    d.cmdloop()
    s = controller.game_play.stuff()

if __name__ == '__main__':
    main()

属性错误：没有属性'completeKey' - Python

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