import osimport time# 添加员工信息def zengjia():    print('请输入员工的基本信息:')    while 1:        while 1:            id = input("请输入编号").strip()            if not id.isdigit():                print("格式不对，重新输入")                continue            with open('emp.db', mode='r', encoding='utf-8') as f:                lst = []                for line in f:                    lst.append(line.split('_')[0]) # 将所有的编号取出来存放lst列表中            for el in lst: # 遍历列表，查看输入编号是否重复                if id == el:                    print('该编号已存在，请重新输入')                    break            else:                name = input("请输入名字").strip()                birthday = input("请输入出生日期").strip()                salary = input("请输入工资").strip()                input_time = time.strftime("%Y-%m-%d %H:%M:%S",time.localtime())                with open('emp.db', mode='a+', encoding='utf-8') as f:                    f.write(id + '_' + name + '_' + birthday + '_' + salary + '_' + input_time + '\n')                print('增加成功')                with open('emp.log', mode='a', encoding='utf-8') as f1:                    d = time.strftime("%Y-%m-%d %H:%M:%S",time.localtime())                    f1.write('管理员在%s增加了添加员工信息操作。' % d + '\n')                tc = input('输入q退出，继续按任意键').strip()                if tc.upper() == 'Q':                    break        break#员工信息修改def xiugai():    with open('emp.db', mode='r', encoding='utf-8') as f, \            open('emp_副本.db', mode='w', encoding='utf-8') as f1:        for line in f:            print(line.strip())        f.seek(0) # 显示完所有员工信息，重新将光标放开头        s = input("请输入要修改的id:").strip()        money = input('请输入工资:').strip()        for line in f:            if line[0] == s:                line = line.replace(line.split('_')[3], money) #  根据编号，取出来该员工的工资，进行修改                # print(line.split('_'))                f1.write(line)            else:                f1.write(line)    os.remove('emp.db')    os.rename('emp_副本.db','emp.db')#删除员工信息def shanchu():    with open('emp.db', mode='r', encoding='utf-8') as f, \            open('emp_副本.db', mode='w', encoding='utf-8') as f1:        for line in f:            print(line.strip())        f.seek(0)        s = input("请输入要删除的id:")        for line in f:            if line[0] < s:                f1.write(line)            elif line[0] > s:  # 将编号进行更改，比如删除编号3，后面的编号依次-1                line = line.replace(line.split('_')[0],str(int(line.split('_')[0]) - 1))                f1.write(line)    os.remove('emp.db')    os.rename('emp_副本.db','emp.db')# 查看信息def chakan():    with open('emp.db', mode='r', encoding='utf-8') as f:        for line in f:            print(line.strip())while 1:    print('HR人力资源管理')    print('1.查看员工信息   2.添加员工信息  3.修改员工信息  4.删除员工信息  5.退出')    n = input('请输入选项:').strip()    if n == '1':        chakan()    elif n == '2':        zengjia()    elif n == '3':        xiugai()    elif n == '4':        shanchu()    elif n == '5':        exit()    else:        print("输入有误!请重新输入")        continue