【python】利用python制作通讯录管理系统（面向对象）_python面向对象通讯录

我们的main.py文件，也就是我们的主函数

#我们的主函数
import StudentEntity
 
from DataAccess import *
 
students = []
def menu():
    print('-' * 40)
    print('通讯录管理系统V1.0')
    print('1、添加学员信息')
    print('2、删除学员信息')
    print('3、打印学员信息')
    print('4、退出系统')
    print('-' * 40)
#添加学生信息
def add(students):
    num = input("请输入学员学号：")
    name = input("请输入学员姓名：")
    age = input("请输入学员年龄：")
    contact = input("请输入学员电话：")
    student = Student(num,name, age,contact)
    students.append(student)
    print("学号为{}的{}同学添加成功！".format(student.num,student.name))
def remove():
    num=input("请输入你想删除的学生学号：")
    for i in students:
        if i.num == num:
            students.remove(i)
            print("{}同学被删除，学号为{}".format(i.name,i.num))
            break
        else:
            print("没有找到学号为{}的学生。".format(i.num))
if __name__ =="__main__":
    students= loadStudents()
    while True :
        menu()
        op = int(input())
        if op == 1:
            add(students)
        elif op==2:
            remove()
        elif op== 3:
            for i in students:
                print(i)
        elif op == 4:
            print("感谢您使用学生通讯录管理系统V3.0")
            break
        else :
            print("输入错误，寻找不到对应的功能，请重新输入")
 
        saveStudents(students)

我们的DataAccess.py

#用于编辑
from StudentEntity import Student
def loadStudents():
    file = open("student.txt","r",encoding="utf-8")
    lines= file.readlines()
    students = []
    for line in lines :
        a=line.split(",")
        students.append(Student(a[0],a[1],int(a[2]),a[3].split("/n")))
    file.close()
 
    return students
 
def saveStudents(students):
    file = open ("student.txt","w",encoding="utf-8")
    for i in students:
        file.write(str(i)+"\n")
    file.close()
 
if __name__=="main":
    a = loadStudents()
    print(a)
    a.append(Student("2024","zhaoliu",22,123456789))
    print(a)

我们的StudentEntity.py

class Student:
    def __init__(self,num,name,age,contact):
        self.num = num
        self.name = name
        self.age = age
        self.contact = contact
 
    def __str__(self):
        return "{},{},{},{}".format(self.num,self.name,self.age,self.contact)
if __name__=="_main_":
    li= Student("2021","李四",20,134342424)
    print(li)

这三个文件要放在同一文件夹下，且不要忘了创建一个student.txt

三个文件编写的程序在main中被导入，整合，读写，运行,实现了程序的运行