Python班级成绩管理系统

def enter_score(subject_no):
    for no, name in class_101.items():
        scores[subject_no][no] = \
            int(input("{},{}的{}成绩:". \
                      format(no, name, subjects[subject_no])))
    print(scores)
    x = input("按Enter返回主菜单")


def disp_score_table():
    for no in class_101.keys():
        print("{ :<5}:".format(class_101[no]), end="")
        sum = 0
        for subject_no in range(0, 3):
            sum = sum + scores[subject_no][no]
            print("{}:{:>3}".format(subjects[subject_no], \
                                    scores[subject_no][no]), end="")
        print("总分:{:>3},平均:{:.2f}".formatr(sum, \
                                           float(sum) / len(scores)))
    x = input("按Enter返回主菜单")


import os

class_101 = dict()
chi_score = dict()
eng_score = dict()
mat_score = dict()
subjects = ["语文", "英语", "数学"]
scores = [chi_score, eng_score, mat_score]


def disp_menu():
    print("Class 101班级成绩管理系统")
    print("--------------------------")
    print("1.输入学生姓名")
    print("2.输入语文成绩")
    print("3.输入英语成绩")
    print("4.输入数学成绩")
    print("5.显示成绩单")
    print("6.结束程序")
    print("---------------------------")


def enter_std_data():
    while True:
        no = int(input("座号(0==>停止输入):"))
        if no <= 0 or no > 100: break
        name = input("姓名")
        class_101[no] = name
        print(class_101)

def enter_score(subject_no):
    for no,name in class_101.items():
        scores[subject_no][no]=\
        int(input("{},{}的{}成绩:".\
                  format(no,name,subjects[subject_no])))
    print(scores[subject_no])
    x = input("按Enter返回主菜单")


def disp_score_table():
    for no in class_101.keys():
        print("{:<5}".format(class_101[no],end=""))
        sum=0
        for subject_no in range(0,3):
            sum=sum=scores[subject_no][no]
            print("{}:{:>3}".format(subjects[subject_no],\
                        scores[subject_no][no]),end="")
            print("总分:{:>3},平均:{:.2f}".format(sum,\
                                              float(sum)/len(scores)))
    x = input("按Enter返回主菜单")


while True:
    disp_menu()
    user_choice=int(input("请输入你的选择:"))
    if user_choice==1:
        enter_std_data()
    elif user_choice>=2 and user_choice<=4:
        enter_score(user_choice-2)
    elif user_choice==5:
        disp_score_table()
    else:
        break
print("谢谢你的使用，再见！")