python - 尝试创建一个简单的成绩册程序

Question

这是我到目前为止的代码。当我输入 5 个数字后，它一直循环到开头。

创建成绩簿程序，允许用户指定可能的最高成绩，然后输入个人作业成绩。输入的成绩不能超过指定的最高值，也不能为负成绩。最后也想平均成绩

def gradebook():
    while True:
        print("what is the highest grade possible")
        inp = int(input())
        if inp == "":
            cap = inp
            gradebook = []
        for x in range(5):
            l = int(input("enter grade"))
            if l > cap:
                print("you cannot have a grade higher than " + str(cap))
                gradebook.append(l)
                print(gradebook)

Answer 1

while 循环对于这种情况是正确的，在本例中是嵌套的 while 循环。

代码

def gradebook(number_of_assignments):
    # init
    assignment_grade_list = []
    assignment_count = 1

    while True:
        try:
            # highest grade
            highest_grade = int(input("What is the highest grade possible?:"))
        except ValueError:
            print("Invalid input. The highest grade must be numeric.")
            continue
        else:
            while assignment_count in range(1,number_of_assignments+1):
                try:
                    # assignment grade
                    assignment_grade = int(input("Enter assignment #%s grade:" % str(assignment_count)))
                except ValueError:
                    print("Invalid input. The assignment grade must be numeric.")
                    continue
                if assignment_grade > highest_grade:
                    print("Invalid input. You cannot have a grade higher than %s." % str(highest_grade))
                    continue
                if assignment_grade < 0:
                    print("Invalid input. You cannot have a grade lower than zero.")
                    continue
                else:
                    assignment_grade_list.append(assignment_grade)
                    assignment_count+=1
            else:
                # average assignments
                return round(sum(assignment_grade_list)/len(assignment_grade_list),2)
                break

# gradebook
a = gradebook(5)
print('Average assignment score: %s' % a)