Question

from random import randint

count = 0
Validation = False

def generateNumber():
    Number = randint(1, 10)
    return Number

def checkNumber(Guess):
    Number = generateNumber()
    if int(Guess) == Number and count < 1:
        return "First time right! Genius?"
        Validation = True

    elif int(Guess) == Number and count == 2:
        return "Correct. Second time, nice!"
        Validation = True
    elif int(Guess) == Number and count < 4:
        return "Correct. Good job."
        Validation = True
    elif int(Guess) == Number and count > 3:
        return "Correct. Took you long enough."
        Validation = True
    else:
        return "Wrong! Try again "

while Validation == False:
    Guess = input("Please guess a number between 1 to 10: ")
    print (checkNumber(Guess))
    count += 1
else:
    TryAgain = input("Would you like to try again? y/n \n")

所以问题是，当用户猜到正确的号码时。验证应该转为True。所以while循环将停止循环。但是当玩家猜到正确的数字时，变量验证不会变为True。

Answer 1

Python中的全局变量有点棘手，仅在文件顶部声明变量是不够的。

另外，在设置验证值之前，请保持返回值，导致函数在设置此变量之前终止

最后一个问题是while逻辑，请参阅使用raw_input而不是输入进行更正，否则缩进

只读对全局变量的访问按预期工作，但是当在函数中更改它们的值需要一个额外的步骤时，您应该将全局变量声明为全局变量。在你的情况下：

def generateNumber():
    Number = randint(1, 10)
    return Number

def checkNumber(Guess):
    global Validation #<-- this instructs Python to use the global variable
    Number = generateNumber()
    if int(Guess) == Number and count < 1:
        Validation = True
        return "First time right! Genius?"

    elif int(Guess) == Number and count == 2:
        Validation = True
        return "Correct. Second time, nice!"

    elif int(Guess) == Number and count < 4:
        Validation = True
        return "Correct. Good job."

    elif int(Guess) == Number and count > 3:
        Validation = True
        return "Correct. Took you long enough."

    else:
        return "Wrong! Try again "

while Validation == False:
    Guess = input("Please guess a number between 1 to 10: ")
    print (checkNumber(Guess))
    count += 1
    if (Validation):
        if (raw_input("Would you like to try again? y/n \n") == "y"):
            count = 0
            Validation = False
        else:
            break

Answer 2

在从方法返回之前，您需要将验证设置为 True ，如下所示：

if int(Guess) == Number and count < 1:
    Validation = True
    return "First time right! Genius?"

对所有if语句执行此操作。

Answer 3

我在你的代码中发现了两个（一半）问题：

正如Ishay Peled所指出的，您需要进行验证全局
您的“返回”语句位于之前您更改“验证”的值
“while”没有“其他”

这是更新后的代码：

from random import randint

count = 0
Validation = False

def generateNumber():
    Number = randint(1, 10)
    return Number

def checkNumber(Guess):
    global Validation
    Number = generateNumber()
    if int(Guess) == Number and count < 1:
        Validation = True
        return "First time right! Genius?"

    elif int(Guess) == Number and count == 2:
        Validation = True
        return "Correct. Second time, nice!"
    elif int(Guess) == Number and count < 4:
        Validation = True
        return "Correct. Good job."
    elif int(Guess) == Number and count > 3:
        Validation = True
        return "Correct. Took you long enough."
    else:
        return "Wrong! Try again "


while Validation == False:
    Guess = input("Please guess a number between 1 to 10: ")
    print (checkNumber(Guess))
    print "validation: %s" % str(Validation)
    count += 1

TryAgain = input("Would you like to try again? y/n \n")

Answer 4

除了全局变量问题，您还需要进行另一组修复。您对Validation = True的所有分配都出现在“return”语句之后。 Validation = True永远不会执行！它将在执行之前退出该函数。在“返回”之前设置“验证=真”。你仍然需要像Ishay所说的那样拥有全球声明。

更改函数中的变量

4 个答案: