需要帮助找到加权平均值

Question

在我的代码中获取错误追踪（最近一次通话）：文件"C:\Users/Daniel Nase/Desktop/assignment 7 test.py"，第119行，位于main（）文件"C:\Users/Daniel Nase/Desktop/assignment 7 test.py"，第23行，在main中calculate_weighted_eaverage（得分总数、得分t、得分权重、平均值1、数值t）文件"C:\Users/Daniel Nase/Desktop/assignment 7 test.py"，第112行，在calculate_weighted_eaverage中weighted_average_t=float（sum（average1））*float（（score_weight.pop（0））/100）TypeError：不支持/："str"one_answers"int"的操作数类型

我试图计算加权平均值，但我不知道我做错了什么。。。救命！！！！

def main():
     score_type = ["tests","assignments","quizzes","labs"]
     score_ammount = [0,0,0,0]
     score_weight = [0,0,0,0]
     final_weight = 0
     scores_t = [0]
     scores_a = [0]
     scores_q = [0]
     total = 0
     average1 = [0]
     average2 = [0]
     average3 = [0]
     num_t = 0


     get_initial_input(score_type,score_ammount,score_weight)
     get_scores(score_ammount,average1,average2,average3,total,scores_t,scores_a,scores_q)
     calculate_weighted_average(score_ammount,scores_t, score_weight, average1, num_t)

def get_initial_input(score_type,score_ammount,score_weight):
    for x in range(0,4):
        score_ammount[x] = input("How many " + score_type[x] + " are there?")
    if input("Is there a final with a serperate weight?(1 = yes/0 = no) ") == '1':
        final_weight = int(input("What is the weight of the final?(0-100) "))
    else:
        final_weight = ""
    total_weight = 0
    while total_weight != 100:
        total_weight = 0
        print("")
        print("Please make sure the weight of all scores add up to 100")
        for x in range(0,3):
            score_weight[x] = input("What is the weight of all the " + score_type[x])
            total_weight = total_weight + int(score_weight[x])
    return score_ammount, score_weight, final_weight

def get_scores(score_ammount,average1,average2,average3,total,scores_t,scores_a,scores_q):
    num_t = int(score_ammount.pop(0))
    print("")
    for i in range(0,num_t):
        scores_t.append(0)
    for i in range(0, num_t):
        y = i + 1
        scores_t[i] = int(input("Please input test score #" + str(y) + " "))
    print(" ")
    for i in range(0,1):
        total = total + sum(scores_t)
    average1 = total/num_t
    print(int(average1))

###########################################################################
    num_a = int(score_ammount.pop(0))
    print("")
    for i in range(0,num_a):
        scores_a.append(0)
    for i in range(0, num_a):
        y = i + 1
        scores_a[i] = int(input("Please input assignment score #" + str(y) + " "))
    print(" ")
    total = 0
    for i in range(0,1):
        total = total + sum(scores_a)
    average2 = total/num_a
    print(int(average2))
###########################################################################
    num_q = int(score_ammount.pop(0))
    print(" ")
    for i in range(0,num_q):
        scores_q.append(0)
    for i in range(0, num_q):
        y = i + 1
        scores_q[i] = int(input("Please input quiz score #" + str(y) + " "))
    print(" ")
    total = 0
    for i in range(0,1):
        total = total + sum(scores_q)
    average3 = 0 + total/num_q
    print(int(average3))
    return average1, average2, average3, total, scores_t, scores_a, scores_q, num_t, num_a, num_q
def calculate_weighted_average(score_ammount, scores_t, score_weight, average1, num_t):
    num_t = int(score_ammount.pop(0))
    for i in range (0,num_t):
        average1[i] = sum(scores_t)/num_t
        weighted_average_t = float(sum(average1))*float((score_weight.pop(0))/100)
        print(weighted_average_t)


main()

Answer 1

并不是要将字符串和int相乘，而是要将它们除法（错误消息显示/，而不是*）。不过，您可以很容易地将字符串转换为int或float，就像您在以下行中所做的那样：

final_weight = int(input("What is the weight of the final?(0-100) "))
scores_t[i] = int(input("Please input test score #" + str(y) + " "))
scores_a[i] = int(input("Please input assignment score #" + str(y) + " "))
scores_q[i] = int(input("Please input quiz score #" + str(y) + " "))

input总是返回一个字符串，如果你想从中得到一个数字，你必须转换它

score_ammount[x] = input("How many " + score_type[x] + " are there?")

这里是

        score_weight[x] = input("What is the weight of all the " + score_type[x])
        total_weight = total_weight + int(score_weight[x])

在将score_weight[x]的值添加到total_weight之前，已将其转换为整数，但score_weight[x]本身仍然是一个字符串。