Question

请原谅我，如果这有点分散，当我说我已经在这个项目上工作超过13个小时并且我严重睡眠不足时，我并不夸张。这是我的第四次修订，老实说，我不知道该怎么做，所以如果有人能帮助我，我将不胜感激。我对编程老师的介绍要求我们制作一张闪存卡＆＃34;从他的模板学习程序。我在Windows 7机器上使用Idle 3.3.3。

#Flash Cards
#Uses parallel arrays to store flash card data read from file
#Quizzes user by displaying fact and asking them to give answer
import random
def main():
    answer = []             #array to store answer for each card
    fact = []               #array to store fact/definition for each card
    totalTried = 0          #stores number of cards attempted
    totalRight = 0          #stores number of correct guesses 
    loadCards(answer, fact) #call loadcards() and pass it both arrays
    numCards = len(answer)  #find number of cards loaded
    keepGoing = "y"

    while keepGoing == "y" or keepGoing == "Y":
        #Enter your code below this line

        # 2a. Pick random integer between 0 and numCards and store the
        #       number in a variable named randomPick.
        randomPick = random.randint (0, numCards)
        # 2b. Add one to the totalTried accumulator variable.
        totalTried = totalTried + 1        
        # 2c. Print element randomPick of the fact array. This shows the
        #       user the    fact/definition for this flashcard.
        print (fact [randomPick] )
        # 2d. Prompt the user to input their guess and store the string they
        # enter in a variable named "userAnswer"
        userAnswer = input ('What is your answer?' )
        # 2e. Compare the user's guess -userAnswer- to element
        #       -randomPick- of the answer array.
        if userAnswer == (answer [randomPick]):
            # 2e-1  If the two strings are equal, tell the user they
            # guessed correctly and add 1 to the totalRight
            # accumulator variable.
            print ('That is correct.')
            totalRight == totalRight + 1
        # 2e2. If the two strings are not equal, tell the user they guessed
        # wrong and display the correct answer from the answer array.
        else:
            print ('That is incorrect.')
            print (answer [randomPick])
        #2f. Prompt the user the user to see if they want to continue and
        #store their response in the keepGoing variable.
        keepGoing = input ('Would you like to continue?')

        #Enter your code above this line

    print("You got", totalRight, "right out of", totalTried, "attempted.")

def loadCards(answer, fact):
    #Enter your code below this line
    # 1a. Open flashcards.txt in read mode & assign it var name "infile"    
    infile = open('flashcards.txt', 'r')
    # 1b. Read 1st line from file and store in var. name "line1"
    line1 = infile.readline ()
    # 1c. Use while loop to make sure EoF has not been reached.
    while line1 != '':
        # 1c1. Strip newline escape sequence (\n)from variable's value.
        line1 = line1.rstrip ('\n')
        # 1c2. Append string to answer array.
        answer.append (line1)
        #  1c3. Read next line from file and store in var. name "line2"
        line2 = infile.readline ()
        # 1c4. Strip newline escape sequence (\n) from variable's value.
        line2 = line2.rstrip ('\n')
        # 1c5. Append the string to the fact array.
        fact.append (line2)
        # 1c6. Read next line from file and store it in var. name "line3".
        line3 = infile.readline ()
        # 1d. Close file.
    infile.close()


    #Enter your code above this line


main()

当我运行该程序时，实际上并没有发生任何事情，但是当我尝试关闭shell窗口之后，它告诉我程序仍然正在运行并询问我是否要杀死它。

调试器在我尝试检查它时也没有显示任何信息。

但是，如果我将代码复制到shell中并从那里运行，我会得到＃34; SyntaxError：在编译单个语句时找到多个语句＆＃34;。这两个文件都没有改变，但早些时候它告诉我＆＃34;导入随机＆＃34;有问题。

提前感谢您的帮助。

Answer 1

我快速看了一下，对我来说似乎没什么好看的。我将input（）更改为raw_input（）（在您的代码中有两个）并注意到当你可能意味着单个时，你有一个双等于

第36行：

totalRight == totalRight + 1

更改为

totalRight = totalRight + 1

修正了你的正确答案计数器和第68行：

line3 = infile.readline ()

更改为

line1 = infile.readline ()

否则它永远会被你的while循环捕获。我刚刚复制了第54行：

line1 = infile.readline ()

并粘贴它，所以它有两次添加另一个readline（）调用，只是一种懒惰的方式来跳过文本文件中的第一行，因为它似乎是一个注释而不是答案和问题的一部分。您可能不想这样做，只需从文本文件中删除评论即可。 = B

通过这些更改，它似乎对我来说很好。

Answer 2

因为这是针对一个类（我不仅可以评论，我可以回答）我想补充说实际上有too many comments

这样的事情

这些评论（说实话，你的大部分评论都是分散注意力和不必要的）

answer = []             #array to store answer for each card
fact = []               #array to store fact/definition for each card
totalTried = 0          #stores number of cards attempted
totalRight = 0          #stores number of correct guesses 
loadCards(answer, fact) #call loadcards() and pass it both arrays
numCards = len(answer)  #find number of cards loaded

此外，将程序放在一个名为main的函数中的重点是，只有在直接调用该文件时才可以运行该函数，并且应该放置

if __name__ == '__main__':
    main()

位于代码的底部，而不仅仅是

main()

使用input()通常被认为是危险的（除非您使用Python3或更高版本，因为它与raw_input()相同），因为它评估输入。你应该自己处理类型，如果你想要一个整数，

foo = int(raw_input('Input a number: '))

（注意raw_input的返回是一个字符串，所以如果你想要一个字符串，你不需要做任何事情）

Python程序不会退出;导入随机导致错误

2 个答案: