Python：从100行文本中提取一个字符串

Question

1. 我需要从 100 行日志数据中提取一个特定的字符串。 我尝试拆分然后尝试获取所需的字符串但无法成功。 任何建议/帮助表示赞赏。 谢谢！

   在下面的日志中，我想提取突出显示的部分，即zqn.2005-04.com.sanblaze:virtualun.init74-2.initiator-00000000-0000 （在第 57 行）

    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

看起来字符串是字典格式（如果我错了，请纠正我），因此您可以尝试将其转换为一个。 那你就不需要正则表达式了。

import ast
your_dict = ast.literal_eval(your_string)

那么你想要的是：

your_dict['status']['initiator0_iqn']