周末小作业

import os
import 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 + '
')
                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 + '
')
                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