制作一个简单的学生信息管理系统

"""
__author__ = 'rz'
__Time__ = 2018/8/28 0028 下午 4:20
"""


student_list = [
    {'id':2018001,'name':'admin','age':20,'phone':'10086'},
    {'id':2018002,'name':'Lucian','age':20,'phone':'10010'},
    {'id':2018003,'name':'lax','age':20,'phone':'10000'}
]

def menu():
    #print(student_list)   
    print('\n***********************************')
    print('XXX管理系统'.center(17,' '))
    print('1.添加学生信息'.center(15,' '))
    print('2.修改学生信息'.center(15, ' '))
    print('3.查看学生信息'.center(15, ' '))
    print('4.删除学生信息'.center(15, ' '))
    print('0.退出学生系统'.center(15, ' '))
    print('***********************************\n')
    choose = input('输入功能选项:')
    if choose == '1':
        add_student()
    elif choose == '2':
        edit_student()
    elif choose == '3':
        query_student()
    elif choose == '4':
        delete_student()
    elif choose == '0':
        exit()
    else:
        print('选项有误,请重新输入')
        menu()

def add_student():
    print('\n')
    print('添加学生'.center(15,' '))
    name = input('输入学生的姓名:')
    age = input('输入学生的年龄:')
    phone = input('输入学生的电话:')
    stu_len = len(student_list)
    student_id = student_list[stu_len-1]['id'] + 1
    student = {'id':student_id,'name':name,'age':age,'phone':phone}
    student_list.append(student)
    if stu_len < len(student_list):
        print('添加学生成功.')
    else:
        print('添加学生失败,请联系管理员.')
    print('\n')
    print('选择操作选项'.center(15, ' '))
    print('1.继续添加学生'.center(15, ' '))
    print('0.返回功能界面'.center(15, ' '))
    while True:
        choose = input('输入(按0返回/按1继续添加):')
        if choose == '0':
            menu()
        elif choose == '1':
            add_student()
        else:
            print('输入有误,请重新输入。')


def edit_student():
    print('\n')
    print('修改学生'.center(15, ' '))
    stu_id = int(input('输入需要修改的学生id:'))
    for n in range(len(student_list)):
        if student_list[n]['id'] == stu_id:
            print('学生信息:',student_list[n])
            name = input('输入修改后学生的姓名:')
            age = input('输入修改后学生的年龄:')
            phone = input('输入修改后学生的电话:')
            student_list[n]['name'] = name
            student_list[n]['age'] = age
            student_list[n]['phone'] = phone
            print('修改成功,核实学生信息--',student_list[n])
            break
    else:
        print('没有此名学生，请重新选择。')
        edit_student()
    print('\n')
    print('选择操作选项'.center(15, ' '))
    print('1.继续修改学生'.center(15, ' '))
    print('0.返回功能界面'.center(15, ' '))
    while True:
        choose = input('输入(按0返回/按1继续修改):')
        if choose == '0':
            menu()
        elif choose == '1':
            edit_student()
        else:
            print('输入有误,请重新输入。')

def query_student():
    print('\n')
    print('学生信息查询'.center(15, ' '))
    print('1.按照姓名查询'.center(15, ' '))
    print('2.按照年龄查询'.center(15, ' '))
    print('3.全部查询'.center(15, ' '))
    while True:
        choose = input('输入选项:')
        if choose == '1':
            query_name()
        elif choose == '2':
            query_age()
        elif choose == '3':
            query_all()
        else:
            print('输入有误,请重新输入。')


def query_name():
    name = input('输入学生名字(粗略查找)：')
    count = 0
    for n in range(len(student_list)):
        if name in student_list[n]['name']:
            print(student_list[n])
            count += 1
    print('共找到符合要求的学生 %d 名' % count)
    print('\n')
    print('选择操作选项'.center(15, ' '))
    print('1.继续查找学生'.center(15, ' '))
    print('0.返回功能界面'.center(15, ' '))
    while True:
        choose = input('输入(按0返回/按1继续查找):')
        if choose == '0':
            menu()
        elif choose == '1':
            query_student()
        else:
            print('输入有误,请重新输入。')

def query_age():
    age = input('输入学生年龄(粗略查找)：')
    count = 0
    for n in range(len(student_list)):
        if age == str(student_list[n]['age']):
            print(student_list[n])
            count += 1
    print('共找到符合要求的学生 %d 名' % count)
    print('\n')
    print('选择操作选项'.center(15, ' '))
    print('1.继续查找学生'.center(15, ' '))
    print('0.返回功能界面'.center(15, ' '))
    while True:
        choose = input('输入(按0返回/按1继续查找):')
        if choose == '0':
            menu()
        elif choose == '1':
            query_student()
        else:
            print('输入有误,请重新输入。')

def query_all():
    print('\n')
    for n in range(len(student_list)):
        print(student_list[n])
    print('\n')
    print('选择操作选项'.center(15, ' '))
    print('1.继续查找学生'.center(15, ' '))
    print('0.返回功能界面'.center(15, ' '))
    while True:
        choose = input('输入(按0返回/按1继续查找):')
        if choose == '0':
            menu()
        elif choose == '1':
            query_student()
        else:
            print('输入有误,请重新输入。')

def delete_student():
    print('\n')
    print('删除学生'.center(15, ' '))
    stu_id = int(input('输入需要删除的学生id:'))
    for n in range(len(student_list)):
        if student_list[n]['id'] == stu_id:
            print('学生信息:',student_list[n])
            while True:
                print('\n确认删除吗? y确认/n取消')
                choose = input().upper()
                if choose == 'Y':
                    del student_list[n]
                    print('id %s 的学生删除成功' % stu_id)
                    break
                elif choose == 'N':
                    break
                else:
                    print('输入有误，请重新输入.')
    print('\n')
    print('选择操作选项'.center(15, ' '))
    print('1.继续删除学生'.center(15, ' '))
    print('0.返回功能界面'.center(15, ' '))
    while True:
        choose = input('输入(按0返回/按1继续删除):')
        if choose == '0':
            menu()
        elif choose == '1':
            delete_student()
        else:
            print('输入有误,请重新输入。')

if __name__ == '__main__':
    menu()