2018-09-05 学生管理系统

1.01-mainpage.py

import file_manager

# 全局变量
file_name = 'user_info.json'  # 保存所有用户的信息的文件

key_user_name = 'user_name'
key_password = 'password'
# ==========================注册=================
"""
为了下次打开系统的时候能够正常登录,注册成功的信息需要保存。保存用户名和密码
一个系统可以注册多个用户,可以用列表保存多个用户。通过字典来保存每个用户名和密码
[
    {'user_name':'用户名','password':'密码'}
]
保存到userinfo.json中
"""
def is_register(user_name):
    """
    判断指定用户名是否已经注册过
    :param user_name:
    :return:
    """
    all_user = file_manager.read_json_file(file_name)
    if not all_user:
        return False
    for user in all_user:
        if user[key_user_name] == user_name:
            return True
    return False

def get_all_user():
    """
    获取所有的用户
    :return:
    """
    all_user =  file_manager.read_json_file(file_name)
    if all_user:
        return all_user
    return []

def register():
    # 1.输入用户名
    while True:
        user_name = input('请输入一个用户名(3-10位):')
        # 判断是否符合格式要求
        if not 3 <= len(user_name) <= 10:
            print('输入有误,请重新输入!')
            continue
        # 判断是否已经注册过
        if is_register(user_name):
            print('%s,已经注册过,请重新输入!'% user_name)
            continue
        print('用户名可用!')
        break

    # 2.输入密码
    while True:
        password = input('请输入密码(6-16):')
        if not 6 <= len(password) <= 16 :
            print('输入密码有误,请重新输入!')
            continue
        re_password = input('确认密码:')
        if password != re_password:
            print('和第一次输入的密码不一样,请重新输入!')
            continue
        break
    #3. 保存用户名和密码
    all_user = get_all_user()
    all_user.append({key_user_name:user_name,key_password:password})
    re = file_manager.write_json_file(file_name,all_user)
    if re:
        print('注册成功!')
    else:
        print('注册失败!')
# =====================登录=====================
def login():
    """
    登录
    :return:
    """
    user_name = input('请输入用户名:')
    password = input('请输入密码:')
    #1.看输入的用户名是否已经注册过
    all_user = get_all_user()
    for user in all_user:
        if user[key_user_name] == user_name:
            if user[key_password] == password:
                print('登录成功!')
                return user_name
            else:
                print('密码错误,登录失败!')
                return
    print('没有注册,登录失败!')
    return None


# =========================主页==================
import student_system
def show_main_page():
    while True:
        print(file_manager.read_text_file('login.txt'))
        value = input('请选择(1-3):')
        # 1.退出
        if value == '3':
            break
        #2.注册
        elif value == '2':
            register()

        elif value == '1':
            user_name = login()
            if user_name:
                # 如果登录成功就进入管理系统
                student_system.user_name = user_name
                student_system.main_page()


        else:
            print('输入有误,重新选择!')

# 1.显示登录界面(主界面)
if __name__ == '__main__':
    #1.显示登录界面(主界面)
    show_main_page()

2.file_manager.py

import json

def write_json_file(file_name,content):
    """
    将内容写入json文件中
    :param file_name: 文件名
    :param content: 要写的内容
    :return: 是否写入成功
    """
    try:
        with open('./files/'+file_name,'w',encoding='utf-8') as f:
            json.dump(content,f,ensure_ascii=False,indent=2)
            return True
    except:
        return False

def read_json_file(file_name):
    """
    读取json文件的内容
    :param file_name: 文件名
    :return: 文件内容
    """
    try:
        with open('./files/'+file_name,encoding='utf-8') as f:
            return json.load(f)
    except:
        return None

def read_text_file(file_name):
    """
    获取文本文件的内容
    :param file_name:文件名
    :return:文件中的内容
    """
    try:
        with open('./files/'+file_name,encoding='utf-8') as f:
            return f.read()
    except FileNotFoundError:
        print('文件不存在')
        return None

3.student_system.py

import file_manager
user_name = ''
# =========================添加学生=======

"""
一个账户对应管理不同的学生---不同的用户对应不同的json文件
json文件中的格式:
{
    'name':'',
    'number':个数,
    'all_students':[
        {'name':,'age':,'tel':,'id':}
    ]

}
"""
key_number = 'number'
key_all_students = 'all_students'
key_name = 'name'
key_age = 'age'
key_tel = 'tel'
key_id = 'id'
def get_system_info():
    """获取系统文件内容"""
    system_info = file_manager.read_json_file(user_name+'.json')
    if system_info:
        return system_info
    return {}
def creat_id():
    """产生学号"""
    system_info = get_system_info()
    number = system_info.get(key_number,0)
    number += 1
    id = 'stu' + str(number).rjust(4,'0')
    return id,number



def add_student():
    while  True:

        # 1.输入信息
        name = input('姓名:')
        age = input('年龄:')
        tel = input('电话:')
        # 2.产生id
        id, number = creat_id()

        # 3.创建学生
        stu = {key_name: name, key_age: age, key_tel: tel, key_id: id}

        # 4.保存学生信息
        system_info = get_system_info()
        all_student = system_info.get(key_all_students,[])
        all_student.append(stu)
        # 5.保存到文件中
        system_info[key_all_students] = all_student
        system_info[key_number] = number
        re = file_manager.write_json_file(user_name + '.json', system_info)
        if re:
            print('添加成功!')
        else:
            print('添加失败')

        print('1.继续添加')
        print('2.返回')
        value = input('请选择(1/2):')
        if value == '1':
            continue
        else:
            break
#===================查找学生==============
def find_student():
    all_students = get_system_info().get(key_all_students,[])
    if not all_students:
        print('目前还没有学生!')
        return
    print('1.查看所有的学生')
    print('2.根据姓名查找学生')
    print('3.根据学号查找学生')
    value = input('请选择(1-3):')

    if value == '1':
        for stu in all_students:
            print('姓名:%s 学号:%s 年龄:%s 电话:%s'%(stu[key_name],stu[key_id],stu[key_age],stu[key_tel]))
    if value == '2':
        name = input('姓名:')
        for stu in all_students:
            if stu[key_name] == name:
                print('姓名:%s 学号:%s 年龄:%s 电话:%s' % (stu[key_name], stu[key_id], stu[key_age], stu[key_tel]))
                break
        else:
            print('没有该学生!!')
    if value == '3':
        id = input('学号:')
        for stu in all_students:
            if stu[key_id] == id:
                print('姓名:%s 学号:%s 年龄:%s 电话:%s' % (stu[key_name], stu[key_id], stu[key_age], stu[key_tel]))
                break
        else:
            print('没有该学生!')
#=================================删除学生============================
def delete_student():
    print('1.按姓名删除学生')
    print('2.按学号删除学生')
    system_info = get_system_info()
    all_students = get_system_info().get(key_all_students,[])
    if not all_students:
        print('目前还没有学生!')
        return
    value = input('请选择(1-2):')
    if value == '1':
        name = input('请输入你要删除学生的姓名:')
        for stu in all_students[:]:
            if stu[key_name] == name:
                all_students.remove(stu)
                print('该学生已删除')
                break
        system_info[key_all_students] = all_students
        file_manager.write_json_file(user_name+'.json',system_info)
    elif value == '2':
        id = input('请输入你要删除学生的学号:')
        for stu in all_students[:]:
            if stu[key_id] == id:
                all_students.remove(stu)
                print('该学生已删除')
                break
        system_info[key_all_students] = all_students
        file_manager.write_json_file(user_name+'.json',system_info)

def revise_student():
    print('1.按姓名修改学生')
    print('2.按学号修改学生')
    system_info = get_system_info()
    all_students = get_system_info().get(key_all_students, [])
    if not all_students:
        print('目前还没有学生!')
        return
    value = input('请选择(1-2):')
    if value == '1':
        name = input('请输入你要修改学生的姓名:')
        for stu in all_students[:]:
            if stu[key_name] == name:
                age = input('年龄:')
                tel = input('电话:')
                stu[key_age] = age
                stu[key_tel] = tel
                print('修改学生信息成功')
        system_info[key_all_students] = all_students
        file_manager.write_json_file(user_name + '.json', system_info)
    if value == '2':
        id = input('请输入你要修改学生的学号:')
        for stu in all_students[:]:
            if stu[key_id] == id:
                name = input('名字:')
                age = input('年龄:')
                tel = input('电话:')
                stu[key_name] = name
                stu[key_age] = age
                stu[key_tel] = tel
                print('修改学生信息成功')
        system_info[key_all_students] = all_students
        file_manager.write_json_file(user_name + '.json', system_info)

# ==========================主页=========
def main_page():
    while True:
        print(file_manager.read_text_file('system.txt'))
        value = input('请选择(1-5):')

        if value == '5':
            break
        elif value == '1':
            add_student()

        elif value == '2':
            find_student()


        elif value == '3':
            delete_student()


        elif value == '4':
            revise_student()

        else:
            print('输入有误,重新输入')

用户注册与登录

===============================
==  ==  ==  ==  ==  ==  ==  ==
===========学生管理系统=========
            1.登 录
            2.注 册
            3.退 出
==  ==  ==  ==  ==  ==  ==  ==
===============================
请选择(1-3):2
请输入一个用户名(3-10位):hyc
用户名可用!
请输入密码(6-16):123456
确认密码:123456
注册成功!
===============================
==  ==  ==  ==  ==  ==  ==  ==
===========学生管理系统=========
            1.登 录
            2.注 册
            3.退 出
==  ==  ==  ==  ==  ==  ==  ==
===============================
请选择(1-3):1
请输入用户名:hyc
请输入密码:123456
登录成功!

添加学生与查看学生

+++++++++++++++++++++++++++++++++++++++++++++++++++++
+                                                   +
       welcome aaa inter student manager system
+                                                   +
+                  1. Add Student                   +
+                  2. Find Student                  +
+                  3. Delete Student                +
+                  4. Revise StudentInfo            +
+                  5. Back                          +
+                                                   +
+++++++++++++++++++++++++++++++++++++++++++++++++++++
请选择(1-5):1
姓名:江秀成
年龄:23
电话:123456
添加成功!
1.继续添加
2.返回
请选择(1/2):2
+++++++++++++++++++++++++++++++++++++++++++++++++++++
+                                                   +
       welcome aaa inter student manager system
+                                                   +
+                  1. Add Student                   +
+                  2. Find Student                  +
+                  3. Delete Student                +
+                  4. Revise StudentInfo            +
+                  5. Back                          +
+                                                   +
+++++++++++++++++++++++++++++++++++++++++++++++++++++
请选择(1-5):2
1.查看所有的学生
2.根据姓名查找学生
3.根据学号查找学生
请选择(1-3):1
姓名:江秀成 学号:stu0001 年龄:23 电话:123456
+++++++++++++++++++++++++++++++++++++++++++++++++++++
+                                                   +
       welcome aaa inter student manager system
+                                                   +
+                  1. Add Student                   +
+                  2. Find Student                  +
+                  3. Delete Student                +
+                  4. Revise StudentInfo            +
+                  5. Back                          +
+                                                   +
+++++++++++++++++++++++++++++++++++++++++++++++++++++
请选择(1-5):1
姓名:袁学斌
年龄:24
电话:345
添加成功!
1.继续添加
2.返回
请选择(1/2):1
姓名:王渠江
年龄:78
电话:2345
添加成功!
1.继续添加
2.返回
请选择(1/2):2
+++++++++++++++++++++++++++++++++++++++++++++++++++++
+                                                   +
       welcome aaa inter student manager system
+                                                   +
+                  1. Add Student                   +
+                  2. Find Student                  +
+                  3. Delete Student                +
+                  4. Revise StudentInfo            +
+                  5. Back                          +
+                                                   +
+++++++++++++++++++++++++++++++++++++++++++++++++++++
请选择(1-5):2
1.查看所有的学生
2.根据姓名查找学生
3.根据学号查找学生
请选择(1-3):1
姓名:江秀成 学号:stu0001 年龄:23 电话:123456
姓名:袁学斌 学号:stu0002 年龄:24 电话:345
姓名:王渠江 学号:stu0003 年龄:78 电话:2345

删除学生

+++++++++++++++++++++++++++++++++++++++++++++++++++++
+                                                   +
       welcome aaa inter student manager system
+                                                   +
+                  1. Add Student                   +
+                  2. Find Student                  +
+                  3. Delete Student                +
+                  4. Revise StudentInfo            +
+                  5. Back                          +
+                                                   +
+++++++++++++++++++++++++++++++++++++++++++++++++++++
请选择(1-5):3
1.按姓名删除学生
2.按学号删除学生
请选择(1-2):1
请输入你要删除学生的姓名:江秀成
该学生已删除
+++++++++++++++++++++++++++++++++++++++++++++++++++++
+                                                   +
       welcome aaa inter student manager system
+                                                   +
+                  1. Add Student                   +
+                  2. Find Student                  +
+                  3. Delete Student                +
+                  4. Revise StudentInfo            +
+                  5. Back                          +
+                                                   +
+++++++++++++++++++++++++++++++++++++++++++++++++++++
请选择(1-5):2
1.查看所有的学生
2.根据姓名查找学生
3.根据学号查找学生
请选择(1-3):1
姓名:袁学斌 学号:stu0002 年龄:24 电话:345
姓名:王渠江 学号:stu0003 年龄:78 电话:2345

修改学生

+++++++++++++++++++++++++++++++++++++++++++++++++++++
+                                                   +
       welcome aaa inter student manager system
+                                                   +
+                  1. Add Student                   +
+                  2. Find Student                  +
+                  3. Delete Student                +
+                  4. Revise StudentInfo            +
+                  5. Back                          +
+                                                   +
+++++++++++++++++++++++++++++++++++++++++++++++++++++
请选择(1-5):4
1.按姓名修改学生
2.按学号修改学生
请选择(1-2):1
请输入你要修改学生的姓名:袁学斌
年龄:56
电话:678
修改学生信息成功
+++++++++++++++++++++++++++++++++++++++++++++++++++++
+                                                   +
       welcome aaa inter student manager system
+                                                   +
+                  1. Add Student                   +
+                  2. Find Student                  +
+                  3. Delete Student                +
+                  4. Revise StudentInfo            +
+                  5. Back                          +
+                                                   +
+++++++++++++++++++++++++++++++++++++++++++++++++++++
请选择(1-5):2
1.查看所有的学生
2.根据姓名查找学生
3.根据学号查找学生
请选择(1-3):1
姓名:袁学斌 学号:stu0002 年龄:56 电话:678
姓名:王渠江 学号:stu0003 年龄:78 电话:2345

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