Python之小型信息管理系统

Posted 2020-11-23 陌默安

#Author:msq
#Time:2019/11/16


import re
import os

filename = "person.txt"

def menu():
    #输出菜单
    print(‘ ‘*5+‘-‘*15+"信息管理系统"+‘-‘*15)
    print(‘ ‘*5+‘=‘*16+"功能菜单"+‘=‘*16)
    print(‘‘‘     1 录入个人信息
     2 查找个人信息
     3 删除个人信息
     4 修改个人信息
     5 排序
     6 统计总人数
     7 显示所有信息
     0 退出系统 ‘‘‘)
    print(‘ ‘*5+‘=‘*36)
    print(‘ ‘*5+"提示：通过数字选择菜单")
    print(‘ ‘*5+‘-‘*36)

#1.录入个人信息
def insert():
    personList = []
    make =True
    while make:
        name = input("请输入姓名（如张三）：")
        sex = input("请输入性别：")
        age = int(input("请输入年龄："))
        id = input("请输入身份证号：")
        occupation = input("请输入职业（如学生）：")

        person = {"name": name, "sex": sex, "age": age, "id": id, "occupation": occupation}
        personList.append(person)
        inputList = input("是否继续添加？(y/n)：")
        if inputList == ‘y‘:
            make = True
        else:
            make = False
        save(personList)
        print("信息录入完毕！！！")

#保存信息到文件
def save(person):
    try:
        person_txt = open(filename, ‘a‘)#以追加的模式打开
    except Exception as e:
        person_txt = open(filename, ‘w‘)#文件不存在就创建文件并打开
    for info in person:
        person_txt.write(str(info)+"
") #执行存储，添加换行符
    person_txt.close()

#2.查找个人信息
def search():
    make =True
    person_query = []
    while make:
        name = ‘‘
        if os.path.exists(filename):
            mode = input("按照姓名查询输入1：按照身份证号查询输入2：")
            if mode == ‘1‘:
                name = input("请输入姓名（如张三）：")
            elif mode == ‘2‘:
                id = input("请输入身份证号：")
            else :
                print("您的输入有误，请重新输入！")
                search()
            with open(filename, ‘r‘) as file:
                person = file.readlines()
                for list in person:
                    d = dict(eval(list))
                    if name is not "":
                        if d[‘name‘] == name:
                            person_query.append(d)
                    elif id is not "":
                        if d["id"] == id:
                            person_query.append(d)
                show_person(person_query)
                person_query.clear()
                inputMark = input("是否继续查询？(y/n):")
                if inputMark == ‘y‘:
                     make = True
                else:
                     make = False
        else:
            print("暂未保存数据信息...")
            return



#3.删除个人信息
def delete():
    mark =True
    while mark:
        person_name = input("请输入要删除人的姓名：")
        if person_name is not "":
            if os.path.exists(filename):
                with open(filename,‘r‘) as rfile:
                    person_old = rfile.readlines()
            else:
                person_old = []
            ifdel = False #标记是否删除
            if person_old: #如果存在
                with open(filename,‘w‘) as wfile:
                    d = {} #定义空字典
                    for list in person_old:
                        d = dict(eval(list))
                        if d["name"] != person_name: #找到该条数据并替换成空字典
                            wfile.write(str(d)+"
")
                        else:
                            ifdel = True #标记已经删除
                if ifdel:
                    print("name为%s个人信息已经被删除了..." % person_name)
                else:
                    print("没有找到name为%s的个人信息" %person_name)
            else:
                print("不存在这个人的信息")
                break
            show()
            inputMark = input("是否继续删除？(y/n)：")
            if inputMark == ‘y‘:
                mark = True
            else:
                mark = False

#4.修改个人信息
def modify():
    show() #显示全部数据
    if os.path.exists(filename):
        with open(filename,‘r‘) as rfile:
            person_old = rfile.readlines()
    else:
        return
    person_name = input("请输入要修改的人的姓名：")
    with open(filename, ‘w‘) as wfile:
        for person in person_old:
            d =dict(eval(person))
            if d["name"] == person_name:
                print("找到了该条信息可以修改^_^")
                while True: #输入要修改的信息
                    d["name"] = input("请输入姓名：")
                    d["sex"] = input("请输入性别")
                    d["age"] = input("请输入年龄")
                    d["id"] =input("请输入身份证号")
                    d["occupation"] = input("请输入职业")
                else:
                    break
                person = str(d)
                wfile.write(person+"
")
                print("修改成功^_^")
            else:
                wfile.write(person)
        mark = input("是否继续修改其他信息？(y/n)")
        if mark == ‘y‘:
            modify()

#5.排序
def sort():
    if os.path.exists(filename):
        with open(filename, ‘r‘) as rfile:
            person_old = rfile.readlines()
            person_new = []
        for list in person_old:
            d = dict(eval(list))
            person_new.append(d)
    else:
        return
    asOrder = input("请选择（0升序；1降序）：")
    if asOrder == ‘0‘:
        asOrderBool = False
    elif asOrder == ‘1‘:
        asOrderBool = True
    else:
        print("您输入的信息有误，请重新输入！")
        sort()
    mode = input("请输入排序方式（1按名字排序；2按身份证号排序）：")
    if mode == ‘1‘:
        person_new.sort(key=lambda x: x["name"], reverse=asOrderBool)
    elif mode == ‘2‘:
        person_new.sort(key=lambda x: x["id"], reverse=asOrderBool)
    else:
        print("您输入的信息有误，请重新输入！")
        sort()
    show_person(person_new)

#6.统计总人数
def total():
    if os.path.exists(filename):
        with open(filename, ‘r‘) as rfile:
            person_old = rfile.readlines()
            if person_old:
                print("一共有%d条数据"%len(person_old))
            else:
                print("还没录入学生信息")
    else:
        print("暂未保存数据信息")


#7.显示所有信息
def show():
    person_new = []
    if os.path.exists(filename):
        with open(filename, ‘r‘) as rfile:
            person_old = rfile.readlines()
        for list in person_old:
            person_new.append(eval(list))
        if person_new:
            show_person(person_new)
    else:
            print("暂未保存数据信息")
#显示某个人信息
def show_person(personList):
    if not personList:
        print("无效的数据")
        return
    ‘‘‘
    format_title = "{:^5}	{:^5}	{:^5}	{:^10}	{:5}"
    print(format_title.format("名字", "性别", "年龄", "身份证号", "职业"))
    format_data = "{:^5}	{:^5}	{:^5}	{:^10}	{:5}"
    for info in personList:
        print(format_data.format((info.get("name"), info.get("sex"), info.get("age"), info.get("id"), info.get("occupation"))))
    ‘‘‘

    print("名字", " 性别", " 年龄", "身份证号", "            职业")
    for info in personList:
        print(info.get("name")+‘  ‘, info.get("sex")+‘   ‘, str(info.get("age"))+‘  ‘, info.get("id")+‘ ‘, info.get("occupation"))



#0.退出系统
def main():
    ctrl = True #标记是否退出系统
    while(ctrl):
        menu()
        option = input("请选择：")
        option_str = re.sub("D", "", option) #提取数字
        if option_str in [‘0‘,‘1‘,‘2‘,‘3‘,‘4‘,‘5‘,‘6‘,‘7‘]:
            option_int = int(option_str)
            if option_int == 0:
                print("您已经退出信息管理系统！")
                ctrl = False
            elif option_int == 1:
                insert()
            elif option_int == 2:
                search()
            elif option_int == 3:
                delete()
            elif option_int == 4:
                modify()
            elif option_int == 5:
                sort()
            elif option_int == 6:
                total()
            elif option_int == 7:
                show()

if __name__==‘__main__‘:
    main()