蟒蛇体感环试验分级报告
蟒蛇体感环试验分级报告
提问于 2013-09-27 22:15:29
我需要帮助解决一个错误。这是我的代码，它接受多个输入和输出(输入的数量，错过考试的学生的数量，分数高于80的学生，参加考试的学生的平均数，以及整个班级的平均水平，包括那些未通过考试的学生)。
#number of students who miss, and get a highscore
num_miss = 0
num_high = 0
total = 0
count = 0
#The minimum and maximum values
min_score = 100.00
max_score = 0.0
score = int(input("Enter a Score(-1 to quit): "))
#The loop to test score inputs, and the students who missed or got a high score
while score >-1:
if score >= 80:
num_high += 1
elif score == 0:
num_miss += 1
if score < min_score:
min_score = score
if score > max_score:
max_score = score
score = int(input("Enter a Score(-1 to quit): "))
# an incriment to count the total for average, and the amount of students that took the exam
total += score
count += 1
students = count
#formulas for creating the averages
average = total / count
average2 = total / (count + -num_miss)
#prints grade report with a dashed line under it
print("Grade Report")
print("-" * 38)
if count >= 0:
print("Total number of students in the class: {}".format(students))
print("Number of students who missed the exam: {}".format(num_miss))
print("Number of students who took the exam: {}".format(count - num_miss))
print("Number of students who scored high: {}".format(num_high))
print("Average of all students in the class: {0:.2f}".format(average))
print("Average of students taking the exam: {0:.2f}".format(average2))这就是问题所在:输入所有这些值: 65，98，45，76，87，94，43，0，89，80，79，0,100，55，75，0，77，-1
这就是我的教授的输出
等级报告
1. Total number of students in the class: 17
2.Number of students who missed the exam: 3
3.Number of students who took the exam: 14
4.Numberof students who scored high: 6
5.Average of all students in the class:62.5
6.Average of students taking the exam: 75.9这就是我得到的输出
等级报告
1.Total number of students in the class: 17
2.Number of students who missed the exam: 3
3.Number of students who took the exam: 14
4.Number of students who scored high: 6
5.Average of all students in the class: 58.64
6.Average of all students taking the exam: 71.21我如何修正我的平均数，使它们与我的教授相同？
回答 3
Stack Overflow用户
发布于 2013-09-27 22:20:06
你把最后一个"-1“作为数据集的一部分。
还有，你为什么要这样做：
average2=total/(count+-numMiss)与此相反的是：
average2=total/(count-numMiss)Stack Overflow用户
发布于 2013-09-27 22:23:11
第一个问题是包含-1。你应该这么做
while True:
...
score=int(input("Enter a Score(-1 to quit): "))
if score == -1:
break
...Stack Overflow用户
发布于 2013-09-27 22:32:05
您只需要这一行一次：
score = int(input("Enter a Score(-1 to quit): "))它应该在循环内。
代码应该如下所示：
while True:
score = int(input("Enter a Score(-1 to quit): "))
if score <= -1:
break此外，这一行还可以在循环之外移动：
students = count页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/19060931
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