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,MacQiao,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

需求：

     1.可進行模糊查詢，語法至少支援下面3種:

         1.select name,age from staff_table where age > 22

         2.select  * from staff_table where dept = IT

         3.查到的資訊，列印後，最後面還要顯示查到的條數 

     2.可建立新員工紀錄，以phone做唯一鍵，staff_id需自增

     3.可刪除指定員工資訊紀錄，輸入員工id，即可刪除

     4.可修改員工資訊，語法如下:

        1.UPDATE staff_table SET dept= 無 where dept = IT

import os

def table_info():
    # 讀取檔案，並轉化為列表
    date_file = open('data.txt','r',encoding='utf-8')
    lines = date_file.readlines()
    data = []
    for line in lines:
        data.append(line.split(','))
    return data
    date_file.close()
table_info()

def qurey1(x):
    count = 0
    for line in table_info():
        if line[2] > '22':
            d1[count] = [line[1], line[2]]
            count += 1
    print('name', ' ', 'age')
    for i in d1.keys():
        print(d1[i][0], ',', d1[i][1])
    print('滿足本次查詢的個數為：', count)

def qurey2(x):
    count = 0
    str = x[1:3]
    for line in table_info():
        if line[4] == str:
            d1[count] = line
            count += 1
    for i in d1.values():
        for m in i:
            print(m, end=' ')
    print('滿足本次查詢的個數為：', count)

def qurey3(x):
    count = 0
    str = x[1:5]
    for line in table_info():
        if line[-1][:4] == str:
            d1[count] = line
            count += 1
    for i in d1.values():
        for m in i:
            print(m, end=' ')
    print('滿足本次查詢的個數為：', count)


def delete():
    while True:
        count = 0
        print("退出請輸入Q")
        input1 = input('請輸入新建命令的SQL語句：').strip()
        input_del = input1.split(' ')
        if input1 == "Q" or input1 == 'q':
            break
        else:
            del_id = input_del[-1].split('=')[-1]
            with open('data.txt','r',encoding='utf-8') as f_read:
                lines = f_read.readlines()
            with open('data.txt','w',encoding='utf-8') as f_wirte:
                for line in lines:
                    if del_id == line.split(',')[0]:
                        count +=1
                        continue
                    else:

                        f_wirte.write(line)
            print('本次刪除的數目為：',count)

def new():
    while True:
        print("退出請輸入Q")
        input_a = input('請輸入新建命令的SQL語句：').strip()
        input_add = input_a.split(' ')
        if input_a == 'Q' or input_a == 'q':
            print('返回到第一層！')
            break
        else:
            name = input_add[2]
            msg = input_add[3]
            phone = msg.split(',')[2]
            count = 0
            num = 0
            for line in table_info():
                count += 1
                if int(line[3]) == int(phone):
                    print('您輸入的使用者已存在')
            newstr = str(count + 1) + ',' + name + ','
            f = open('data.txt', 'a', encoding='utf-8')
            f.writelines('\n ')
            f.writelines(newstr)
            f.writelines(msg)
            f.close()
            num += 1
            print('\033[1;35m 使用者已新增 \033[0m'.center(10, '.'))
            print('本次操作的命令列數為',num)


def modify():
    while True:
        print("""支援以下語句修改員工資訊，包括部門名稱與年齡：')
        UPDATE staff_table SET dept="Market" WHERE dept = "IT"')
        UPDATE staff_table SET age=25 WHERE name = "Alex Li"')
        退出請按Q""")
        print('請輸入您要操作的語句：')
        user_mod = input('<<<').strip()
        user_msg = user_mod.split(' ')[3].split('=')
        # 提取年齡
        if user_mod == "q" or user_mod == "Q":
            print('退出到上一層！')
            break
        elif user_msg[0] == 'age':
            aft = user_msg[1]
            name = user_mod.split('"')[-2]
            count = 0

            with open('data.txt', 'r+', encoding='utf-8') as f1:
                lines = f1.readlines()
            with open('data.txt', 'w', encoding='utf-8') as f2:
                for line in lines:
                    if name in line:
                        bef = line.split(',')[2]
                        line = line.replace(bef, aft)
                        print(1)
                        count += 1
                    f2.write(line)
                print('資訊已更新！')
                print('本次更新資訊數目為：', count)
        else:
            input_update = user_mod.split('"')
            before = input_update[3]
            after = input_update[1]
            count = 0
            with open('data.txt', 'r+', encoding='utf-8') as f1:
                lines = f1.readlines()
            with open('data.txt', 'w', encoding='utf-8') as f2:
                for line in lines:
                    if before in line:
                        line = line.replace(before, after)
                        count += 1
                    f2.write(line)
                print('資訊已更新！')
                print('本次更新資訊數目為：', count)


print('歡迎來到員工查詢系統'.center(40,'*'))
while True:
    print('''請根據以下提示輸入對應指令序號：')
        1.查詢員工資訊')
        2.建立員工資訊')
        3.刪除員工資訊')
        4.修改員工資訊''')
    input_num = int(input('>>>>>').strip())
    if input_num == 1:
        while True:
            print('退出請按Q')
            print('我們支援以下查詢語句'.center(40,'-'))
            print('''
            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"'
            請輸入您的查詢語句：''')

            input_sent = input('<<<<').strip()
            input_sent1 = input_sent.split(' ')
            d1 = {}
            print("本次查詢的結果如下：".center(20, "-"))

            if input_sent == 'find name,age from staff_table where age > %s' % (input_sent1[-1]):
                qurey1(input_sent1[-1])
            elif input_sent == 'find * from staff_table where dept = %s' % (input_sent1[-1]):
                qurey2(input_sent1[-1])
            elif input_sent == 'find * from staff_table where enroll_date like %s' % (input_sent1[-1]):
                qurey3(input_sent1[-1])
            elif input_sent == "Q" or input_sent == 'q':
                break
            else:
                print('您的輸入格式有誤，請重新輸入！')

    elif input_num == 2:
        new()

    elif input_num == 3:
        delete()

    elif input_num == 4:
        modify()
    else:
        print('您輸入有誤，請重新輸入')


 

問題：table_info 函式其實可以改成modify等函式的呼叫方式