Python 为什么在添加while循环和if-then-else-if语句后会出现UnboundLocalError？

这是怎么回事？ 这是一个基本的老虎机游戏，但是当我尝试添加硬币和硬币生成的条件时，我得到了

UnboundLocalError

。 当我没有while循环和if-then-else-if语句时，会生成随机数

import random

def main():
    coins = 50
    x = 0
    y = 0
    z = 0
    while coins >= 0 or giveUp != yes:
        coins = (coins - 3)
        x = random.randrange(1, 7)
        y = random.randrange(1, 7)
        z = random.randrange(1, 7)
        x = x
        y = y
        z = z
        print (x + y + Z)
        if (x == y) or (x == z):
            if (x == 1):
                coins = (coins + 3)
                print ("you win 3 coins")
            elif x == 2:
                coins = (coins +3)
                print = ("you win 3 coins")
            elif x == 3:
                coins = (coins + 3)
                print = ("you win 3 coins")
            elif x == 4:
                coins = (coins +3)
                print = ("you win 3 coins")
            elif x == 5:
                coins = (coins + 3)
                print = ("you win 3 coins")
            elif x == 6:
                coins = (coins + 3)
                print = ("you win 3 coins")
            elif x == 7:
                coins = (coins + 3)
                print = ("you win 3 coins")
            giveUp = (input("do you give up?"))

main()

此分配（也称为“绑定”）

表示放弃是本地的

while

循环在您分配（即绑定）该局部变量之前尝试测试该局部变量

您可以通过在

while

循环之前设置

giveUp=“No”

来解决此问题

另外，

yes

可能应该是

“yes”

在这里，循环条件取决于名为

giveUp

的变量，但您正试图在循环中定义该变量。您必须在循环之前先定义它。最好的解决方案是在

while

循环之前定义

giveUp=“No”

。另外，

input（）

返回字符串，因此它必须是

giveUp="No"
while coins >= 0 or giveUp != "yes":
#codes

另一个提示是，您使用的是

或
操作符，因此如果用户键入
no
，即使没有任何硬币，用户仍然可以玩。您应该将其更改为
和

while coins >= 0 and giveUp != "yes":

现在如果用户想玩，需要硬币和“是”
请更正您的代码。。。
print（x+y+Z）
name
Z
在您的代码中位于上方。
这里肯定有错误。。和
print=
name
print
不应跟在字符
=

试试这个

>>> import random
>>> def main():
    coins = 50
    x = 0
    y = 0
    z = 0
    while coins >= 0 or giveUp != yes:
        coins = (coins - 3)
        x = random.randrange(1, 7)
        y = random.randrange(1, 7)
        z = random.randrange(1, 7)
        x = x
        y = y
        z = z
        print (x + y + z)
        if (x == y) or (x == z):
            if (x == 1):
                coins = (coins + 3)
                print ("you win 3 coins")
            elif x == 2:
                coins = (coins +3)
                print ("you win 3 coins")
            elif x == 3:
                coins = (coins + 3)
                print ("you win 3 coins")
            elif x == 4:
                coins = (coins +3)
                print ("you win 3 coins")
            elif x == 5:
                coins = (coins + 3)
                print ("you win 3 coins")
            elif x == 6:
                coins = (coins + 3)
                print ("you win 3 coins")
            elif x == 7:
                coins = (coins + 3)
                print ("you win 3 coins")
            giveUp = (input("do you give up?"))


>>> main()
you win 3 coins
do you give up?3
12
12
9
7
12
9
14
10
15
you win 3 coins
do you give up?1
9
>>>

x=x，y=y，z=z
的乐趣是什么？你想说什么？你应该说
放弃！='是“
在第一个检查条件中，如果
-
elif
-代码，您能解释一下这个
吗？根据显示的值，您将始终得到相同的结果（除了在大多数情况下您犯了错误并覆盖了
print
）
while coins >= 0 and giveUp != "yes":

>>> import random
>>> def main():
    coins = 50
    x = 0
    y = 0
    z = 0
    while coins >= 0 or giveUp != yes:
        coins = (coins - 3)
        x = random.randrange(1, 7)
        y = random.randrange(1, 7)
        z = random.randrange(1, 7)
        x = x
        y = y
        z = z
        print (x + y + z)
        if (x == y) or (x == z):
            if (x == 1):
                coins = (coins + 3)
                print ("you win 3 coins")
            elif x == 2:
                coins = (coins +3)
                print ("you win 3 coins")
            elif x == 3:
                coins = (coins + 3)
                print ("you win 3 coins")
            elif x == 4:
                coins = (coins +3)
                print ("you win 3 coins")
            elif x == 5:
                coins = (coins + 3)
                print ("you win 3 coins")
            elif x == 6:
                coins = (coins + 3)
                print ("you win 3 coins")
            elif x == 7:
                coins = (coins + 3)
                print ("you win 3 coins")
            giveUp = (input("do you give up?"))


>>> main()
you win 3 coins
do you give up?3
12
12
9
7
12
9
14
10
15
you win 3 coins
do you give up?1
9
>>>