1 def fetch(data): 2 print('这是查询功能') 3 tag = False 4 data = 'aaaa %s\n'%data 5 res_data = [] 6 with open('bbb','r',encoding='gbk') as file: 7 for i in file: 8 if i == data: 9 tag = True 10 continue 11 if tag == True and i.startswith('aaa'): 12 break 13 if tag == True: 14 res_data.append(i) 15 print(i) 16 return res_data 17 def add(): 18 pass 19 def delete(): 20 pass 21 def change(data): 22 print('你要更改的数据是%s'%data) 23 old_addr =data[0]['backend'] 24 old_to = " server %s 98798 %s\n"%(data[0]['record']['server'],data[0]['record']['98798']) 25 need_to = " server %s 98798 %s\n"%(data[1]['record']['server'],data[1]['record']['98798']) 26 res = fetch(old_addr) 27 print(res) 28 if old_to in res: 29 a = res.index(old_to) 30 res[a] = need_to 31 res.insert(0,'aaaa %s\n'%old_addr) 32 tag = False 33 write_or = True 34 old_addr2 = 'aaaa %s'%old_addr 35 with open('bbb','r') as old_file,\ 36 open('bbb_new','w') as new_file: 37 for backend in old_file: 38 if backend.strip() == old_addr2: 39 tag = True 40 continue 41 elif backend.startswith('aaaa'): 42 tag = False 43 if not tag: 44 new_file.write(backend) 45 if tag and write_or: 46 for i in res: 47 new_file.write(i) 48 write_or = False 49 50 else: 51 print('没有要修改的数据') 52 return '更改成功' 53 54 if __name__ =="__main__": 55 msg = ''' 56 1：查询 57 2；增加 58 3：删除 59 4：更改 60 5：退出''' 61 func_list = { 62 '1':fetch, 63 '2':add, 64 '3':delete, 65 '4':change 66 } 67 while True: 68 print(msg) 69 choice = input("请输入需要选择的功能：") 70 if not choice: continue 71 if choice =='5':break 72 data = input('请输入数据：') 73 if choice != '1': 74 data = eval(data) 75 ress = func_list[choice](data) 76 print(ress) 77 输出： 78 1：查询 79 2；增加 80 3：删除 81 4：更改 82 5：退出 83 请输入需要选择的功能：4 84 请输入数据：[{'backend':'www.asia.com','record':{'server':'jdfjsk','98798':'sajdfkjahskjf'}},{'backend':'www.asia.com','record':{'server':'aaaaa','98798':'bbbbbb'}}] 85 你要更改的数据是[{'backend': 'www.asia.com', 'record': {'server': 'jdfjsk', '98798': 'sajdfkjahskjf'}}, {'backend': 'www.asia.com', 'record': {'server': 'aaaaa', '98798': 'bbbbbb'}}] 86 这是查询功能 87 server jdfjsk 98798 sajdfkjahskjf 88 89 server jdfjsdsk 98798 sajdfksasjahskjf 90 91 server jdfsdjsk 98798 sajdfksdjahskjf 92 93 server jdfxcjsk 98798 sajdfkjsaahskjf 94 95 server jdfjsxck 98798 sajdfkxxzjahskjf 96 97 [' server jdfjsk 98798 sajdfkjahskjf\n', ' server jdfjsdsk 98798 sajdfksasjahskjf\n', ' server jdfsdjsk 98798 sajdfksdjahskjf\n', ' server jdfxcjsk 98798 sajdfkjsaahskjf\n', ' server jdfjsxck 98798 sajdfkxxzjahskjf\n'] 98 None