卡在嵌套的 While 循环中

Question

以下是我的程序的代码。我试图让它询问用户是否要输入一组测试分数。如果是，程序将运行，获取测试分数，当用户键入结束时，循环结束，将分数相加，然后给出平均值。然后，它应该询问用户是否要添加另一组测试分数。如果是，它将再次运行。如果没有，它将停止并具有结束语句。我在主 while 循环内部有第二个 while 循环。当我运行代码时，它甚至不运行主 while 循环。以下是当我回答y（是）问题时显示的内容。Enter test scoresEnter end to end input======================Get entries for another set of scores?  yEnter your information belowGet entries for another set of scores?  它不会运行原始的 while 循环;它允许用户输入分数，完成后点击“结束”，计算分数，给出平均值，最后询问用户是否要输入另一组测试分数。有什么建议吗？我有完整的代码，就像我在下面的PyCharm中一样。print("The Test Scores application")print()print("Enter test scores")print("Enter end to end input")print("======================")# initialize variablescounter = 0score_total = 0test_score = 0get_entries = 'y'while test_score != 999:    while True:        get_entries = input("Get entries for another set of scores?  ")        if get_entries == 'y':            print("Enter your information below")        else:            print("Thank you for using the Test Scores application. Goodbye!")    test_score = input("Enter test score: ")    if test_score == 'end':        break    elif (int(test_score) >= 0) and (int(test_score) <= 100):        score_total += int(test_score)        counter += 1    elif test_score == 999:        break    else:        print("Test score must be from 0 through 100. Score discarded. Try again.")    # calculate average scoreaverage_score = round(score_total / counter)# format and display the resultprint("======================")print("Total Score:", score_total,      "\nAverage Score:", average_score)

Answer 1

您的内环缩进得太远。 前面有 5 个空格，而其他所有内容都缩进 4 个空格。另外，当我们谈论缩进时，您也有一个不正确的缩进。while True:break

要解决此问题，请执行以下操作：

• 从之前删除一个空格while True:

• 在之前再添加三个空格break

• 对于奖励积分，还要从嵌套内的5行之前删除一个空格，以便它们缩进8或12个空格。while

---

更新问题的提示：

看看你的内部循环的实现。在什么情况下程序会退出该循环以继续？test_score = ...

Answer 2

下面编辑的代码可能会有所帮助，这可能就是您想要做的。

print("The Test Scores application")

print()

print("Enter test scores")

print("Enter end to end input")

print("======================")

# initialize variables

counter = 0

score_total = 0

test_score = 0

get_entries = 'y'

while test_score != 999:

    while True:

        get_entries = input("Get entries for another set of scores?  ")

        if get_entries == 'y':

            print("Enter your information below")

        else:

            print("Thank you for using the Test Scores application. Goodbye!")

            break

        test_score = input("Enter test score: ")

        if test_score == 'end':

            break

        elif (int(test_score) >= 0) and (int(test_score) <= 100):

            score_total += int(test_score)

            counter += 1

        elif test_score == 999:

            break

        else:

            print("Test score must be from 0 through 100. Score discarded. Try again.")

    break

    # calculate average score

average_score = round(score_total / counter)

# format and display the result

print("======================")

print("Total Score:", score_total,

      "\nAverage Score:", average_score)