路飞学城Python-Day10(practise)

作业：
现要求你写一个简单的员工信息增删该查程序，需求如下：
当然此表在文件存储时可以这样表示
1,Alex Li,22,13651054608,IT,2013-04-01
2,Jack Wang,28,13451024608,HR,2015-01-07
3,Rain Wang,21,13451054608,IT,2017-04-01
4,Mack Qiao,44,15653354208,Sales,2016-02-01
5,Rachel Chen,23,13351024606,IT,2013-03-16
6,Eric Liu,19,18531054602,Marketing,2012-12-01
7,Chao Zhang,21,13235324334,Administration,2011-08-08
8,Kevin Chen,22,13151054603,Sales,2013-04-01
9,Shit Wen,20,13351024602,IT,2017-07-03
10,Shanshan Du,26,13698424612,Operation,2017-07-02
1.可进行模糊查询，语法至少支持下面3种查询语法:
find name,age from staff_table where age > 22
find * from staff_table where dept = "IT"
find * from staff_table where enroll_date like "2013"
2.可创建新员工纪录，以phone做唯一键(即不允许表里有手机号重复的情况)，staff_id需自增
语法: add staff_table Alex Li,25,134435344,IT,2015-10-29
3.可删除指定员工信息纪录，输入员工id，即可删除
语法: del from staff_table where id=3
4.可修改员工信息，语法如下:
UPDATE staff_table SET dept="Market" WHERE dept = "IT" 把所有dept=IT的纪录的dept改成Market
UPDATE staff_table SET age=25 WHERE name = "Alex Li" 把name=Alex Li的纪录的年龄改成25
5.以上每条语名执行完毕后，要显示这条语句影响了多少条纪录。 比如查询语句 就显示 查询出了多少条、修改语句就显示修改了多少

import os
import re


def create_staff_table():
    '''
    1.如果表存在就加载表，不存在就创建信息表
    2.正常打印表
    :return:
    '''
    msg = [
        '1,Alex Li,22,13651054608,IT,2013-04-01',
        '2,Jack Wang,28,13451024608,HR,2015-01-07',
        '3,Rain Wang,21,13451054608,IT,2017-04-01',
        '4,Mack Qiao,44,15653354208,Sales,2016-02-01',
        '5,Rachel Chen,23,13351024606,IT,2013-03-16',
        '6,Eric Liu,19,18531054602,Marketing,2012-12-01',
        '7,Chao Zhang,21,13235324334,Administration,2011-08-08',
        '8,Kevin Chen,22,13151054603,Sales,2013-04-01',
        '9,Shit Wen,20,13351024602,IT,2017-07-03',
        '10,Shanshan Du,26,13698424612,Operation,2017-07-02',
    ]
    if not os.path.isfile('staff_table'):
        with open('staff_table', 'w+', encoding='utf-8') as f:
            for i in msg:
                f.write(i+'\n')
            print('初始化文件已完成')
    else:
        with open('staff_table', 'r', encoding='utf-8') as f:print('+-----------staff_table------------+\n'+f.read()+'+-----------end------------+')


def add_info():
    '''
    增加用户信息
    1.phone必须是唯一值
    2.id自增
    3.语法 add staff_table Alex Li,25,134435344,IT,2015-10-29
    :return:
    '''
    add_in = input('增加语法如下\nadd staff_table Alex Li,25,134435344,IT,2015-10-29\n请输入增加命令>>').strip().split(',')
    if add_in[0].split(' ')[0] == 'add' and add_in[0].split(' ')[1] == 'staff_table':
        add_out = ' '.join(add_in[0].split(' ')[2:]) + ',' + ','.join(add_in[1:])
        with open('staff_table', 'a+', encoding='utf-8') as f:
            phone_list = []
            f.seek(0)
            for i in f:
                phone_list.append(i.strip().split(',')[3])
            if add_in[2] not in phone_list:
                staff_id = int(i.strip().split(',')[0]) + 1
                f.write(str(staff_id) + ',' + add_out + '\n')
                print('1条记录已新增！')
            else:
                print('该手机号已经注册了！')
    else:
        print('错误的命令')


def del_info():
    '''
    删除用户信息
    1.只能根据用户的id删除
    2.语法 del from staff where id=x
    (满足条件：1.语法验证正确；)
    【bug】：删除不存在id也不提示错误信息
    :return:
    '''
    del_in = input('删除语法如下\ndel from staff where id=x\n请输入删除命令>>').strip().split(' ')
    if del_in[0] + del_in[1] + del_in[2] + del_in[3] + del_in[4] == 'delfromstaffwhereid=' + re.split('=', del_in[4])[1]:#验证语法是否正确
        old_file = open('staff_table','r+',encoding='utf-8')
        new_file = open('staff_table1','w',encoding='utf-8')
        for i in old_file:
            line = i.strip().split(',')
            if re.split('=', del_in[4])[1] != line[0]:
                new_file.write(i)
        new_file.close()
        old_file.close()
        os.remove('staff_table')
        os.rename('staff_table1','staff_table')
    else:
        print('错误的语法')


def change_info():
    '''
    修改语法：
    UPDATE staff_table SET dept="Market" WHERE  dept = "IT" 把所有dept=IT的纪录的dept改成Market
    UPDATE staff_table SET age=25 WHERE  name = "Alex Li"  把name=Alex Li的纪录的年龄改成25
    1.验证语法
    2.新建文件并修改msg
    3.重写文件并删除原文件
    -----------------------
    0.找到所有输入中查找的值
    1.拿到输入的值
    2.替换原值
    3.存储变更的数据（按索引）
    4.排序后覆盖原文件
    :return:
    '''
    change_in = input('更新语法如下\nUPDATE staff_table SET dept="Market" WHERE  dept = "IT"\n'
                      'UPDATE staff_table SET age=25 WHERE  name = "Alex Li"\n请输入更新命令>>').strip().split(' ')
    dept_list = []  # 查询到的数据放这个列表
    dept_list_left = []  # 没查到的数据放这个列表
    dept_list_temp = []  # 我都忘这个干啥用的..
    if change_in[0] == 'UPDATE'.upper() and change_in[1] == 'staff_table' \
            and change_in[2] == 'SET'.upper() and change_in[4] == 'WHERE'.upper() and change_in[6] == 'dept':
        change_in_dept_set = re.split('=', change_in[3])[1].replace('"', '')  # 1.拿到输入的Market
        change_in_dept_file = change_in[8].replace('"', '')  # 1.拿到输入的IT
        f = open('staff_table', 'r+', encoding='utf-8')
        n_f = open('staff_table_new', 'w', encoding='utf-8')
        for line in f:
            dept_list_temp.append(line.strip())
        for l in dept_list_temp:
            if change_in_dept_file == l.strip().split(',')[4]:
                l1 = l.replace(l.strip().split(',')[4], change_in_dept_set)
                dept_list.append(l1)
            else:
                dept_list_left.append(l)
        res = dept_list + dept_list_left
        for lines in res:
            n_f.write(lines + '\n')
        f.close()
        n_f.close()
        os.remove('staff_table')
        os.rename('staff_table_new', 'staff_table')
        print('\033[31;1m%s\033[0m条数据受到影响！' % len(set(dept_list)))
    elif change_in[0] == 'UPDATE'.upper() and change_in[1] == 'staff_table' \
            and change_in[2] == 'SET'.upper() and change_in[4] == 'WHERE'.upper() and change_in[6] == 'name':
        f = open('staff_table', 'r+', encoding='utf-8')
        n_f = open('staff_table_new', 'w', encoding='utf-8')
        change_in_dept_set = re.split('=', change_in[3])[1]  # 1.拿到输入的age
        change_in_dept_file = ' '.join(change_in[8:]).replace('"', '')  # 2.拿到输入的name
        for line in f:
            dept_list_temp.append(line.strip())
        for l in dept_list_temp:
            if change_in_dept_file == l.strip().split(',')[1]:
                l1 = l.replace(l.strip().split(',')[2], change_in_dept_set)
                dept_list.append(l1)
            else:
                dept_list_left.append(l)
        res = dept_list + dept_list_left
        for lines in res:
            n_f.write(lines + '\n')
        f.close()
        n_f.close()
        os.remove('staff_table')
        os.rename('staff_table_new', 'staff_table')
        print('\033[31;1m%s\033[0m条数据受到影响！' % len(set(dept_list)))
    else:
        print('错误的语法！')


def find_info():
    '''
    1.可进行模糊查询，语法至少支持下面3种查询语法:
    find name,age from staff_table where age > 22
    find * from staff_table where dept = "IT"
    find * from staff_table where enroll_date like "2013"
    :return:
    '''
    find_in = input('查询语法如下\n'
                    'find name,age from staff_table where age > 22\n'
                    'find * from staff_table where dept = "IT"\n'
                    'find * from staff_table where enroll_date like "2013"\n'
                    '请输入查询命令>>').strip().split(' ')
    find_list = []
    if find_in[1] == 'name,age' and find_in[3] =='staff_table' and find_in[5] == 'age':
        with open('staff_table','r',encoding='utf-8') as f:
            for line in f:
                if int(find_in[7]) < int(line.strip().split(',')[2]):
                    find_list.append(line)
            print('+--staff_table--+\n'+'+name------'+'--age+')
            for i in find_list:
                print('|'+i.strip().split(',')[1], i.strip().split(',')[2]+'\t|')
            print('+---------------+\n'+'查询到\033[31;1m%s\033[0m条数据！'% len(set(find_list)))
    elif find_in[1] == '*' and find_in[3] =='staff_table' and find_in[5] =='dept':
        with open('staff_table','r',encoding='utf-8') as f:
            for line in f:
                if find_in[7].replace('"','') == line.strip().split(',')[4]:
                    find_list.append(line.strip())
            print('+----------staff_table------+\n')
            for i in find_list:
                print(i)
            print('+-----------------------------+\n'+'查询到\033[31;1m%s\033[0m条数据！' % len(set(find_list)))
    elif find_in[1] == '*' and find_in[3] =='staff_table' and find_in[5] == 'enroll_date':
        with open('staff_table', 'r', encoding='utf-8') as f:
            for line in f:
                if find_in[7].replace('"', '') == re.split('-', line.strip().split(',')[5])[0]:
                    find_list.append(line.strip())
            print('+----------staff_table------+\n')
            for i in find_list:
                print(i)
            print('+-----------------------------+\n' + '查询到\033[31;1m%s\033[0m条数据！' % len(set(find_list)))
    else:
        print('错误的命令！')


def main():
    while True:
        print('+--------操作界面--------+\n0.打印当前信息\n1.查询员工信息\n2.新增员工信息\n3.删除员工信息\n4.修改员工信息\n5.退出\n+--------end--------+')
        choice = input('请输入您的选项>>>').strip()
        if choice == '1':
            find_info()
        elif choice == '2':
            add_info()
        elif choice == '3':
            del_info()
        elif choice == '4':
            change_info()
        elif choice == '5':
            exit()
        elif choice == '0':
            create_staff_table()
        else:
            print('错误的命令，请重试！')


if __name__ == '__main__':
    create_staff_table()
    main()

 

7月9日安排

上午 完成 函数所有作业及视频学习和笔记，并完成员工信息表的增加和删除

下午 完成员工信息表的修改和查询

晚上 完成模块10个视频，记录笔记