构思
学生管理系统 应该包含老师注册登录 管理学生信息(增删改查)还有数据持久化
因为数据存入JSON文件 增删改查都需要读取和修改文件
所以需要一个读写文件的方法文件 file_manager
密码加密可以用到哈希模块文件 tools
老师和学生的类文件 model
程序入口(主页)文件index
核心增删改查文件 student_manager
file_manager.py
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""" Project: ClassStudent Creator: 猫猫 Create time: 2021-02-25 20:23 IDE: PyCharm Introduction:https://blog.csdn.net/Cantevenl/article/details/115439530 """ base_dir = 'files/' # 定义一个变量 文件路径 # 读文件的函数 def read_file(file_name): try : with open (base_dir + file_name, 'r' , encoding = 'utf8' ) as file : content = file .read() return content except FileNotFoundError: print ( '文件未找到' ) def write_json(file_name, data): with open (base_dir + file_name, 'w' , encoding = 'utf8' ) as file : import json json.dump(data, file ) def read_json(file_name, default_data): try : with open (base_dir + file_name, 'r' , encoding = 'utf8' ) as file : import json return json.load( file ) except FileNotFoundError: # print('文件未找到') return default_data |
tools.py
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""" Project: ClassStudent Creator: 猫猫 Create time: 2021-02-25 20:24 IDE: PyCharm Introduction:https://blog.csdn.net/Cantevenl/article/details/115439530 """ # 加密密码 import hashlib def encrypt_password(passwd, x = 'zhumaogouniu' ): h = hashlib.sha256() h.update(passwd.encode( 'utf8' )) h.update(x.encode( 'utf8' )) return h.hexdigest() |
model.py
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""" Project: ClassStudent Creator: 猫猫 Create time: 2021-02-25 20:24 IDE: PyCharm Introduction:https://blog.csdn.net/Cantevenl/article/details/115439530 """ # 创建一个老师对象 class Teacher( object ): def __init__( self , name, password): import tools self .name = name self .password = tools.encrypt_password(password) class Student( object ): def __init__( self , s_id, name, age, gender, tel): self .s_id = s_id self .name = name self .age = age self .gender = gender self .tel = tel |
index.py
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""" Project: ClassStudent Creator: 猫猫 Create time: 2021-02-25 20:25 IDE: PyCharm Introduction:https://blog.csdn.net/Cantevenl/article/details/115439530 """ import sys import file_manager # 导入自己写的读取文件模块 import model import student_manager def register(): # 读取文件,查看文件里是否有数据。如果文件不存在,默认是一个字典 data = file_manager.read_json( 'data.json' , {}) while True : teacher_name = input ( '请输入账号(3~6位):' ) if not 2 < = len (teacher_name) < = 6 : print ( '账号不符合要求,请重新输入!' ) else : break if teacher_name in data: print ( '注册失败!该账号已经被注册!' ) return while True : password = input ( '请输入密码(6~12位):' ) if not 6 < = len (password) < = 12 : print ( '密码不符合要求,请重新输入!' ) else : break # 用户名密码都已经输入正确以后 将用户名和密码以key:value形式储存 # 可以创建一个teacher对象 t = model.Teacher(teacher_name, password) data[t.name] = t.password file_manager.write_json( 'data.json' , data) def login(): # 读取文件,查看文件里是否有数据。如果文件不存在,默认是一个字典 data = file_manager.read_json( 'data.json' , {}) teacher_name = input ( '请输入老师账号:' ) if teacher_name not in data: print ( '登录失败!该账号没有注册!' ) return password = input ( '请输入密码:' ) import tools if data[teacher_name] = = tools.encrypt_password(password): student_manager.name = teacher_name print ( '登录成功' ) student_manager.show_manager() else : print ( '密码错误,登陆失败!' ) def start(): content = file_manager.read_file( 'welcome.txt' ) while True : operate = input (content + '\n请选择(1-3):' ) if operate = = '1' : print ( '登录' ) login() elif operate = = '2' : print ( '注册' ) register() elif operate = = '3' : print ( '退出' ) # break # 把循环退出 # exit(0) # 退出整个程序 sys.exit( 0 ) # 退出程序 else : print ( '输入有误!' ) if __name__ = = '__main__' : start() |
student_manager.py
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""" Project: ClassStudent Creator: 猫猫 Create time: 2021-02-25 20:26 IDE: PyCharm Introduction:https://blog.csdn.net/Cantevenl/article/details/115439530 """ import file_manager import model name = '' # 添加 def add_student(): x = file_manager.read_json(name + '.json' , {}) if not x: students = [] num = 0 else : students = x[ 'all_student' ] # s_id通过json字典里的num来生成 num = int (x[ 'num' ]) while True : s_name = input ( '请输入学生姓名:' ) s_age = input ( '请输入年龄:' ) s_gender = input ( '请输入性别:' ) s_tel = input ( '请输入电话号码:' ) num + = 1 # 字符串的zfill方法,在字符串的前面补0 s_id = 'student_id_' + str (num).zfill( 3 ) # 创建一个Student对象 s = model.Student(s_id, s_name, s_age, s_gender, s_tel) students.append(s.__dict__) # 拼接字典 data = { 'all_student' : students, 'num' : len (students)} # 把数据写入到文件里 以老师名字.json 把data写进去 file_manager.write_json(name + '.json' , data) choice = input ( '添加成功!\n1.继续\n2.返回\n请选择(1-2):' ) if choice = = '2' : break # 显示 查找 def show_student(): choice = input ( '1.查看所有学生\n2.根据姓名查找\n3.根据学号查找\n其他:返回\n请选择:' ) students = file_manager.read_json(name + '.json' , {}) all_students = students.get( 'all_student' , []) # get拿列表里的数据,拿不到默认是一个空列表[] if not all_students: print ( '该老师没有学生,请添加学生' ) return if choice = = '1' : # 查看所有学生 pass elif choice = = '2' : # 根据姓名查看 s_name = input ( '请输入学生的姓名:' ) all_students = filter ( lambda s: s[ 'name' ] = = s_name, all_students) # students就只保留了指定名字的学生 elif choice = = '3' : # 学号查找 s_id = input ( '请输入学生的学号:' ) all_students = filter ( lambda s: s[ 's_id' ] = = s_id, all_students) else : return if not students: print ( '未找到学生' ) return for student in all_students: print ( '学号:{s_id},姓名:{name},性别:{gender},年龄{age},电话号码{tel}' . format ( * * student)) # 修改 def modify_student(): key = value = '' m = file_manager.read_json(name + '.json' , {}) all_students = m.get( 'all_student' , []) if not all_students: print ( '该老师没有学生,请添加学生' ) return modify = input ( '1.根据姓名修改\n2.根据学号修改\n其他:返回\n请选择:' ) if modify = = '1' : value = input ( '请输入要修改的学生名字:' ) key = 'name' elif modify = = '2' : value = input ( '请输入要修改的学生学号:' ) key = 's_id' else : return students = list ( filter ( lambda s: s[key] = = value, all_students)) if not all_students: print ( '没有找到对应的学生' ) return for i, student in enumerate (students): print ( '{xiabiao} 学号:{s_id},姓名:{name},性别:{gender},年龄{age},电话号码{tel}' . format (xiabiao = i, * * student)) n = int ( input ( '请输入需要修改的学生的标号(0~{}),q-->返回:' . format ( len (students) - 1 ))) if not 0 < = n < = len (students): print ( '输入的内容错误' ) return all_students.remove(students[n]) students[n][ 's_id' ] = new_input((students[n][ 's_id' ]), "请输入修改后的学生学号[回车则不修改]:" ) students[n][ 'name' ] = new_input((students[n][ 'name' ]), "请输入修改后的学生姓名[回车则不修改]:" ) students[n][ 'gender' ] = new_input((students[n][ 'gender' ]), "请输入修改后的学生性别[回车则不修改]:" ) students[n][ 'age' ] = new_input((students[n][ 'age' ]), "请输入修改后的学生年龄[回车则不修改]:" ) students[n][ 'tel' ] = new_input((students[n][ 'tel' ]), "请输入修改后的学生电话号码[回车则不修改]:" ) all_students.append(students[n]) print (all_students) m[ 'all_student' ] = all_students file_manager.write_json(name + '.json' , m) # 删除 def delete_student(): y = file_manager.read_json(name + '.json' , {}) all_students = y.get( 'all_student' , []) key = value = '' if not all_students: print ( '该老师没有学生,请添加学生' ) return num = input ( '1.按照姓名删除\n2.按照学号删除\n其他:返回\n请选择:' ) if num = = '1' : key = 'name' value = input ( '请输入要删除的学生名字:' ) elif num = = '2' : key = 's_id' value = input ( '请输入要删除的学生学号:' ) else : return students = list ( filter ( lambda s: s.get(key, '') = = value, all_students)) if not students: print ( '没有找到对应的学生' ) return for i, student in enumerate (students): print ( '{xiabiao} 学号:{s_id},姓名:{name},性别:{gender},年龄{age},电话号码{tel}' . format (xiabiao = i, * * student)) n = input ( '请输入需要删除的学生的标号(0~{}),q-->返回:' . format ( len (students) - 1 )) if not n.isdigit() or not 0 < = int (n) < = len (students): print ( '输入的内容错误' ) return # 将学生从all_students里删除 # all_students.pop(n) all_students.remove(students[ int (n)]) # 更新新的名单 y[ 'all_student' ] = all_students file_manager.write_json(name + '.json' , y) # 显示管理页面 def show_manager(): content = file_manager.read_file( 'students_page.txt' ) % name while True : print (content) operate = input ( '请选择(1-5):' ) if operate = = '1' : add_student() elif operate = = '2' : show_student() elif operate = = '3' : modify_student() elif operate = = '4' : delete_student() elif operate = = '5' : break else : print ( '输入错误!' ) # 修改时用的input方法 def new_input(old, new): input_str = input (new) if len (input_str) > 0 : return input_str else : return old |
美化文本
通过自己写的读取文件方法可以直接读取文本(类似界面)
welcome.txt
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= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = * * 欢迎来到学生管理系统 * * 1. 登 录 2. 注 册 3. 退 出 * * * * = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = |
students_page.txt
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= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = ❀❀ 欢迎 % s老师进入学生管理系统: 1. 添加学生 2. 查看学生 3. 修改学生信息 4. 删除学生 5. 返回 ❀❀ ❀❀ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = |
执行效果
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原文链接:https://blog.csdn.net/Cantevenl/article/details/115439530