Python：从100行文本中提取一个字符串

Question

1. 我需要从100行日志数据中提取特定的字符串。我 试图拆分，然后试图获得所需的字符串，但不能 成功。任何建议/帮助表示赞赏。谢谢！

   在下面的日志，我想提取高亮显示的部分，即是 zqn.2005- 04.com.sanblaze：virtualun.init74-2.initiator-00000000-0000（其在管线57 ）

   1   Out[19]: 
   2   {'portstatus': {'errors': {'busy_errors': '0', 
   3   'checkcondition_errors': '0', 
   4   'compare_errors': '0', 
   5   'ioc_errors': '0', 
   6   'notready_errors': '0', 
   7   'read_errors': '0', 
   8   'read_retries': '0', 
   9   'scsi_errors': '0', 
   10   'test_errors': '0', 
   11   'timeout_errors': '0', 
   12   'write_errors': '0', 
   13   'write_retries': '0'}, 
   14   'net_counters': {'RxBytes': '148476788547060', 
   15   'RxCompressed': '0', 
   16   'RxDrop': '96188', 
   17   'RxErrs': '0', 
   18   'RxFIFO': '0', 
   19   'RxFrame': '0', 
   20   'RxMulticast': '259513', 
   21   'RxPFCPause': '0', 
   22   'RxPackets': '77165581759', 
   23   'RxStandardPause': '0', 
   24   'TxBytes': '20440169002909', 
   25   'TxCompressed': '0', 
   26   'TxDrop': '0', 
   27   'TxErrs': '0', 
   28   'TxFIFO': '0', 
   29   'TxFrame': '0', 
   30   'TxMulticast': '0', 
   31   'TxPFCPause': '0', 
   32   'TxPackets': '55075507366', 
   33   'TxStandardPause': '5349727', 
   34   'net_avgriops': '0', 
   35   'net_avgrrate': '0.00', 
   36   'net_avgtiops': '0', 
   37   'net_avgtrate': '0.00', 
   38   'net_riops': '0', 
   39   'net_rrate': '0.00', 
   40   'net_tiops': '0', 
   41   'net_trate': '0.00'}, 
   42   'perfdata': {'avg_oiocnt': '0', 
   43   'avgiops': '0', 
   44   'avgriops': '0', 
   45   'avgrrate': '0.00', 
   46   'avgtrate': '0.00', 
   47   'avgwiops': '0', 
   48   'avgwrate': '0.00', 
   49   'iops': '0', 
   50   'max_oiocnt': '509', 
   51   'oiocnt': '0', 
   52   'riops': '0', 
   53   'rrate': '0.00', 
   54   'trate': '0.00', 
   55   'wiops': '0', 
   56   'wrate': '0.00'}, 
   57   'status': {'initiator0_iqn': 'zqn.2005- 04.com.sanblaze:virtualun.init74-2.initiator-00000000-0000', 
   58   'initiator10_iqn': 'zqn.2005-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0010', 
   59   'initiator11_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0011', 
   60   'initiator12_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0012', 
   61   'initiator13_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0013', 
   62   'initiator14_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0014', 
   63   'initiator15_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0015', 
   64   'initiator16_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0016', 
   65   'initiator17_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0017', 
   66   'initiator18_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0018', 
   67   'initiator19_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0019', 
   68   'initiator1_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0001', 
   69   'initiator20_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0020', 
   70   'initiator21_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0021', 
   71   'initiator22_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0022', 
   72   'initiator23_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0023', 
   73   'initiator24_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0024', 
   74   'initiator25_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0025', 
   75   'initiator26_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0026', 
   76   'initiator27_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0027', 
   77   'initiator28_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0028', 
   78   'initiator29_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0029', 
   79   'initiator2_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0002', 
   80   'initiator30_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0030', 
   81   'initiator31_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0031', 
   82   'initiator32_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0032', 
   83   'initiator33_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0033', 
   84   'initiator34_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0034', 
   85   'initiator35_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0035', 
   86   'initiator36_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0036', 
   87   'initiator37_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0037', 
   88   'initiator38_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0038', 
   89   'initiator39_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0039', 
   90   'initiator3_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0003', 
   91   'initiator40_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0040', 
   92   'initiator41_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0041', 
   93   'initiator42_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0042', 
   94   'initiator43_iqn': 'iqn.2003-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0043', 
   95   'mode': 'Init', 
   96   'numinitiators': '50', 
   97   'numtargets': '0', 
   98   'port': '0', 
   99   'portwwnn': '90:e2:ba:82:92:1c', 
   100   'portwwpn': '90:e2:ba:82:92:1c', 
   101   'speed': '10G', 
   102   'state': 'Online', 
   103   'topo': 'iSCSI'}, 
   104   'sympn': '-', 
   

Answer 1

貌似字符串在字典格式（纠正我，如果我错了），所以你可以尝试将其转换为一个。那么你将不需要正则表达式。

import ast 
your_dict = ast.literal_eval(your_string) 

然后你想会是什么：

your_dict['status']['initiator0_iqn']