Question

这个想法是程序将被用来具有许多功能。根据用户输入的内容，它们将被发送到程序中的某个特定def，并可以选择在末尾再次保存数据。

score = 0

def Quiz():
    print ("Welcome to the quiz.")
    name = input("Please type your name:")

    print ("Answer the question.")
    Answer == input ("Please enter the answer to 5+6.")

Quiz()

if Answer == "11":
 score = score + 1
 print("Your answer is correct and your score is", score) 
else:
 print ("Your answer is wrong. Your score is", score)

again = str(input("Do you want to play again (type yes or no): "))
if again == "yes":
    Quiz()
else:
    sys.exit(0)

我只是不确定为什么它不会运行该程序，然后如果用户输入是，则会循环返回。

任何帮助，我想我都快结束了。

Answer 1

代码有些错误。 6502在另一个答案中提到了其中一个：通过拥有第二个Quiz（），程序将在运行Quiz函数后返回到该点，因此它将在第二次执行后自动退出。

其他一些事情：

Answer == input (' ')失败，因为==使Python认为它正在评估等效性，而不是将输入分配给Answer
答案不是全局变量，也不传递回主程序，因此当您尝试检查其值时它将失败

从第一句话开始，我不确定您要对过程进行什么操作，因此需要将Answer定义为全局，或者需要将其从函数中传回，如下所示：

score = 0

def Quiz():
    print ("Welcome to the quiz.")
    name = input("Please type your name:")

    print ("Answer the question.")
    Answer = input ("Please enter the answer to 5+6.")
    return Answer

while True:

    Answer = Quiz()

    if Answer == "11":
     score = score + 1
     print("Your answer is correct and your score is", score)
    else:
     print ("Your answer is wrong. Your score is", score)

    again = str(input("Do you want to play again (type yes or no): "))
    if again == "no":
        break

但是整个过程可以更简单地完成，而无需执行以下程序：

score = 0

while True:
    print ("Welcome to the quiz.")
    name = input("Please type your name:")

    print ("Answer the question.")
    Answer = input ("Please enter the answer to 5+6.")

    if Answer == "11":
     score = score + 1
     print("Your answer is correct and your score is", score)
    else:
     print ("Your answer is wrong. Your score is", score)

    again = str(input("Do you want to play again (type yes or no): "))
    if again == "no":
        break

最后，Quiz和Answer都不应真正以大写字母开头。根据PEP8标准https://realpython.com/python-pep8/#naming-styles，函数和变量名应以小写字母开头。这看似微不足道，但是即使在Stack Overflow问题中，您也可以看到Answer具有与函数名称相同的颜色，并且不同于其他变量，因此以后可能会引起混淆。

Answer 2

有一些错误。除了先前的答案，这也不对：

Answer == input ("Please enter the answer to 5+6.")

程序将因此失败。您想将输入分配给变量Answer，但是==用于比较。然后：

if Answer == "11":

此处未定义变量Answer。您只能在功能测验中定义它。

关于您的问题，您可以使用while循环：

from random import randint


def quiz():    
    print ("Answer the question.")
    a, b = randint(0, 9), randint(0, 9)
    answer = input("Please enter the answer to {0} + {1}: ".format(a, b))
    return a + b == int(answer)

if __name__=='__main__':          
    again = 'yes'
    score = 0
    print ("Welcome to the quiz.")
    name = input("Please type your name: ")

    while again == 'yes':  # it will go inside at least once         
        if quiz():
            score += 1
            print("Your answer is correct and your score is:", score) 
        else:
            print ("Your answer is wrong. Your score is", score)
        again = str(input("Do you want to play again (type yes or no): "))

    print('Your total score is:', score)

Answer 3

score = 0

print ("Welcome to the quiz.")
name = input("Please type your name:")

while True:    
    print ("Answer the question.")
    Answer = input ("Please enter the answer to 5+6.") # only one '='!

    if Answer == "11":
        score = score + 1
        print("Your answer is correct and your score is", score) 
    else:
        print ("Your answer is wrong. Your score is", score)

    again = str(input("Do you want to play again (type yes or no): "))
    if again == "no":
        break # this exits the loop

Answer 4

在您问完问题答案后第二次调用Quiz()时，程序将继续执行并到达末尾，从而退出。

您要执行的是while循环：

score = 0

print ("Welcome to the quiz.")
name = input("Please type your name:")

while True:    
    print ("Answer the question.")
    Answer = input ("Please enter the answer to 5+6.") # only one '='!

    if Answer == "11":
        score = score + 1
        print("Your answer is correct and your score is", score) 
    else:
        print ("Your answer is wrong. Your score is", score)

    again = str(input("Do you want to play again (type yes or no): "))
    if again == "no":
        break # this exits the loop

使用def函数重新运行Python程序

4 个答案: