python - 如何在 Python 中使用递归计数器？

Question

我正在尝试用 Python 编写一个简单的“密码”程序，该程序允许使用递归函数尝试 3 次“登录”。我不明白为什么它不起作用......(是的，受侏罗纪公园启发)

def magicWord(count):
    int(count)
    answer = raw_input("What is the password? ")
    if answer == 'lucas':
        print 'ACESS GRANTED'
    else:
        count =+ 1
        if count > 2:
            while count > 2:
                count+=1
                print "na na na you didn\'t say the magic word. "
        else:
            magicWord(count)

magicWord(0)

Answer 1

你们很亲密。只有几个小的修复:

def magicWord(count):
    answer = raw_input("What is the password? ")
    if answer == 'lucas':
        print 'ACESS GRANTED'
    else:
        count += 1
        if count > 2:
            print "na na na you didn\'t say the magic word. "
            return
        else:
            magicWord(count)

这是一个示例 session :

>>> magicWord(0)
What is the password? alan
What is the password? ellie
What is the password? ian
na na na you didn't say the magic word.