import os def file_handler(backend_data,res=None,type='fetch'): # 查詢功能 if type == 'fetch': with open('test_new.txt','r') as read_f: ret = [] ... ...
import os def file_handler(backend_data,res=None,type='fetch'): # 查詢功能 if type == 'fetch': with open('test_new.txt','r') as read_f: ret = [] tag = False for read_line in read_f: if read_line.strip() == backend_data: tag = True continue if tag and read_line.startswith('backend'): break if tag: print(read_line,end='') ret.append(read_line) return ret if type == 'change': # 修改功能 with open('test_new.txt', 'r') as read_f, \ open('test_new.txt_new', 'w') as write_f: tag = False has_write = False for read_line in read_f: if read_line.strip() == backend_data: tag = True continue if tag and read_line.startswith('backend'): tag = False if not tag: write_f.write(read_line) else: if not has_write: for record in res: write_f.write(record) has_write = True os.rename('test_new.txt', 'test_new.txt.bak') os.rename('test_new.txt_new', 'test_new.txt') os.remove('test_new.txt.bak') def fetch(data): print('您輸入的信息是:',data) backend_data= 'backend %s' % data return file_handler(backend_data) def change(data): print('開始修改功能') print('用戶輸入的信息是:',data) backend=data[0]['backend'] backend_data='backend %s' %backend old_server_record ='%s server %s %s\n'%(*9,data[0]['record']['server']) new_server_record = '%s server %s %s\n' % (*9, data[1]['record']['server']) print('您想要修改的記錄:',old_server_record) res=fetch(backend) print(res) if not res or old_server_record not in res: return '您要修改的信息不存在' else: index = res.index(old_server_record) res[index]=new_server_record res.insert(0,'%s\n' %backend_data) file_handler(backend_data,res=res,type='change') if __name__== '__main__': msg=''' 1:查詢 2:修改 5:退出 ''' msg_dic={ '1':fetch, '2':change } while True: print(msg) choose = input('請輸入您要的選項:').strip() if not choose: continue if choose == '5':break data = input('請輸入您的信息:').strip() if choose != '1': data = eval(data) res = msg_dic[choose](data) # 查詢到的結果放到一個列表裡輸出 print('最終的結果:',res)