Question

我正在开展一项小型练习计划，让您可以为您喜欢的学生输入3个考试成绩，最后我希望计算所有学生之间的平均成绩。我可以输入所有学生的姓名和分数，它会让我回到他们的平均水平，但当你进入＆＃34; *＆＃34;它只计算最后一个学生的平均值，我试图弄清楚如何根据他们的考试成绩计算所有学生的平均分数

def GetPosInt():     
        nameone = str

        while nameone != "*":

            nameone =(input("Please enter a student name or '*' to finish: "))

            if nameone != "*":
                scoreone = int(input("Please enter a score for " + nameone +": "))

                if scoreone < 0:
                    print("positive integers please!")
                    break

                else:
                    scoretwo = float(input("Please enter another score for "+nameone+": "))
                    scorethree = float(input("Please enter another score for "+nameone+": "))

                testscores = scoreone + scoretwo + scorethree
                avg = testscores / 3
                print("The average score for",nameone,"is ",avg)   
                classtotal = avg

            if nameone == "*":
                classavg = classtotal / 3
                print("The class average is: ",classavg)

# main
def main():
    GetPosInt()

main()

Answer 1

以下是代码的简化版本，它使用列表为多个学生存储数据，然后在最后显示这些详细信息，并计算班级平均值（注释内容）。

def GetPosInt():     
    names = [] # declare the lists you'll use to store data later on
    avgs = []

    while True:
        name = ...

        if name != "*":
            score1 = ...
            score2 = ...
            score3 = ...

            avg = (score1 + score2 + score3) / 3 # calculate the student average

            # append student details in the list
            names.append(name)  
            avgs.append(avg) 

        else:
            break

    for name, avg in zip(names, avgs): # print student-wise average
        print(name, avg)

    class_avg = sum(avg) / len(avg) # class average

Answer 2

COLDSPEED在我处理问题时为您提供了问题解决方案。如果你想看到不同的解决方案。就在这里......你可以为分数设定条件。

def GetPosInt():
    numberOfStudents = 0.0
    classtotal = 0.0
    classavg = 0.0
    while(True):
        nam = (raw_input("Please enter a student name or '*' to finish "))
        if(nam == '*'):
            print("The average of the class is " + str(classavg))
            break
        numberOfStudents += 1.0
        scoreone = float(input("Please enter the first score for " + str(nam) + ": "))
        scoretwo = float(input("Please enter the second score for " + str(nam) + ": "))
        scorethree = float(input("Please enter the third score for " + str(nam) + ": "))
        testscores = scoreone + scoretwo + scorethree
        avg = testscores / 3.0
        print("The average score for " + str(nam) + " is " + str(avg))
        classtotal += avg
        classavg = classtotal / numberOfStudents

def main():
    GetPosInt()
main()

在嵌套循环中查找类avg

2 个答案: