根据某个条件从运行总数中加上或减去一个变量

Question

我在做一个简单的小游戏。下面的内容提示用户并以交互方式显示一个问题。在

我想加入一个“得分”功能。每当我试图在我的Question类中初始化一个“count”为0或类似值，并以value中存储的值为增量，count将保持为0。我有麻烦了。理想情况下，我希望在用户回答每个问题后打印分数。如果正确，将self.value加到count中，否则减去。在

import random

class Question(object):
def __init__(self, question, answer, value):
    self.question = question
    self.answer = answer
    self.value = value



def ask(self):
    print (self.question + "?")
    count = 0
    response = input().strip()
    if response in self.answer:
        x = random.randint(0,3)
        print (positives[x])
        print ("Answer is" + " " + self.answer)


    else:
        y = random.randint(0,3)
        print (negatives[y])
        print ("Answer is" + " " + self.answer)



question_answer_value_tuples = [('This author made a University of Virginia law professor the    protagonist of his 2002 novel "The Summons"',
'(John) Grisham']
#there are a few hundred of these. This is an example that I read into Question. List of tuples I made from a jeopardy dataset. 

positives = ["Correct!", "Nice Job", "Smooth", "Smarty"]
negatives = ["Wrong!", "Think Again", "Incorrect", "So Sorry" ]


questions = []
for (q,a,v) in question_answer_value_tuples:
    questions.append(Question(q,a,v))

print ("Press any key for a new question, or 'quit' to quit. Enjoy!")
for question in questions:
    print ("Continue?")
    choice = input()
    if choice in ["quit", "no", "exit", "escape", "leave"]:
        break
    question.ask()

我想加一些东西

^{pr2}$

我想我在处理局部/全局变量时遇到了麻烦。在

Answer 1

每次你叫“询问”你都会将计数重置为0。count也是一个局部变量，因为它只在ask（）中定义。您需要使count成为类的成员并将其初始化为0。然后可以像其他类变量一样使用它。参见下面的代码。在

def __init__(self, question, answer, value):
 self.question = question
 self.answer = answer
 self.value = value
 self.count=0

def ask(self):
 print (self.question + "?")
 response = input().strip()
 if response in self.answer:
    x = random.randint(0,3)
    print (positives[x])
    print ("Answer is" + " " + self.answer)
    self.count += self.value


 ... etc

但是我不满意你的逻辑，把你的分数包括在你的问题类-因为分数涉及很多问题，所以它需要在你的类中或类外进行全局定义，所以当你调用你的方法ask时，它应该返回答案是真是假还是值，就像这样

^{pr2}$

然后你做以下事情

 score=0
 for question in questions:
  print ("Continue?")
  choice = input()
  if choice in ["quit", "no", "exit", "escape", "leave"]:
    break
  score+=question.ask()