Python Regex从日志(log)文件中提取日志(log)行

发布于11月14日

我有一个日志(log)文件，我想从中提取特定的日志(log)行. 我不熟悉正则表达式，但在下面的格式中取得了有限的成功. 我应该使用什么正则表达式来查找包含文本‘=START BACKUP DETAILS END==’AND‘=START BACKUP DETAILS END=’的日志(log)行

06/11/2023 13:41 LocalFileCacheHashDb filterExisting, items contains 577 items
06/11/2023 13:41 LocalFileCacheHashDb < filterExisting(15)
06/11/2023 13:41 BackUpLauncher =============== START BACKUP DETAILS ===============
06/11/2023 13:41 BackUpLauncher startBackup called with 68
06/11/2023 13:41 BackUpLauncher startBackup called with isScheduledSync = true
06/11/2023 13:41 BackUpLauncher startBackup called with isApplicationForeground = false
06/11/2023 13:41 BackUpLauncher =============== START BACKUP DETAILS END ===============
06/11/2023 13:41 BackUpHelper prepareSyncData
06/11/2023 13:42 AssetScannerSdkManager getAndFilterPhotoVideoFolderItem, descriptionItemList contains 570 items
06/11/2023 13:42 AssetScannerSdkManager getLocalMusic, descriptionItemList contains 1 items
06/11/2023 13:42 AssetScannerSdkManager getLocalDocs, descriptionItemList contains 6 items
06/11/2023 13:42 AssetScannerSdkManager getAssets, isRestore = false, descriptionItemList contains 577 items

import re
with open('cached_logs.txt', 'r') as text_file:
    text_file=text_file.read()
    pattern = r'([M-c])'
    matches = re.findall(pattern, text_file)
with open('cacheOut.txt', 'w') as out:
    out.write('\n'.join(matches))

import re text = """\ 06/11/2023 13:41 LocalFileCacheHashDb filterExisting, items contains 577 items 06/11/2023 13:41 LocalFileCacheHashDb < filterExisting(15) 06/11/2023 13:41 BackUpLauncher =============== START BACKUP DETAILS =============== 06/11/2023 13:41 BackUpLauncher startBackup called with 68 06/11/2023 13:41 BackUpLauncher startBackup called with isScheduledSync = true 06/11/2023 13:41 BackUpLauncher startBackup called with isApplicationForeground = false 06/11/2023 13:41 BackUpLauncher =============== START BACKUP DETAILS END =============== 06/11/2023 13:41 BackUpHelper prepareSyncData 06/11/2023 13:42 AssetScannerSdkManager getAndFilterPhotoVideoFolderItem, descriptionItemList contains 570 items 06/11/2023 13:42 AssetScannerSdkManager getLocalMusic, descriptionItemList contains 1 items 06/11/2023 13:42 AssetScannerSdkManager getLocalDocs, descriptionItemList contains 6 items 06/11/2023 13:42 AssetScannerSdkManager getAssets, isRestore = false, descriptionItemList contains 577 items """ pat = r"(?<=START BACKUP DETAILS ===============\n).*?(?=\s*^[^\n]+START BACKUP DETAILS END)" for block in re.findall(pat, text, flags=re.S | re.M): print("-" * 80) print(block) print("-" * 80)

-------------------------------------------------------------------------------- 06/11/2023 13:41 BackUpLauncher startBackup called with 68 06/11/2023 13:41 BackUpLauncher startBackup called with isScheduledSync = true 06/11/2023 13:41 BackUpLauncher startBackup called with isApplicationForeground = false --------------------------------------------------------------------------------

Python Regex从日志(log)文件中提取日志(log)行

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