如何在函数内部添加变量？

Question

我正在制作一种有趣的基于文本的RPG，但在添加到“ balance”变量以给玩家更多钱方面遇到了一些麻烦。

balance = int(0)

def step_result(balance):
    result = random.randint(1,5)
    if result == 1:
        time.sleep(0.5)
        print("You come across a friendly merchant who gives you 50 gold pieces as a token of friendship")
        balance = balance + 50
        time.sleep(1)

稍后在代码中，我使用print（balance）来显示余额，但余额仍显示为0。有什么想法吗？

Answer 1

尝试一下，Global应该解决您的问题

balance = int(0)

def step_result(balance):
    result = random.randint(1,5)
    global balance
    if result == 1:
        time.sleep(0.5)
        print("You come across a friendly merchant who gives you 50 gold pieces as a token of friendship")
        balance = balance + 50
        time.sleep(1)