Question

下面是我的程序的代码。我试图让它问用户是否要输入一组测试分数。如果是，则程序运行，获取测试分数，当用户键入结束时，循环结束，添加分数，然后给出平均值。然后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。如果不是，它将停止并具有结束语句。

我在主while循环中有第二个while循环。当我运行代码时，它甚至没有运行主while循环。以下是我对问题的回答是（是）时显示的内容。

Enter test scores
Enter end to end input
======================
Get entries for another set of scores?  y
Enter your information below
Get entries for another set of scores?

它不运行原始的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，如下面的PyCharm中所述。

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!")
    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 score
average_score = round(score_total / counter)

# format and display the result
print("======================")
print("Total Score:", score_total,
      "\nAverage Score:", average_score)

Answer 1

您的内部循环缩进得太远了。 while True:前面有5个空格，而其他所有内容都缩进了4个空格。另外，当我们谈论缩进时，您的break也缩进不正确。

要解决此问题：

从while True:之前删除一个空格
在break之前再添加三个空格
要获得奖励积分，还请从嵌套while的5行中的每行开始删除一个空格，以使它们缩进8或12个空格。

提示更新的问题：

查看内部循环的实现。在什么情况下程序会退出该循环以继续进行test_score = ...？

Answer 2

下面编辑的代码可能会有所帮助，这可能是您想要做的。

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)

卡在嵌套的While循环中

2 个答案:

提示更新的问题：