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I have a huge log file which I want to parse using python. The file contains the data of working and non working audio/video/image file

The content of log.txt 

filename = abc.mp4 played correctly filname = cdf.wav failed filename = rtg.mp3 failed

Now from this log.txt how to find out failed filename I tried re.search but seems like I not reaching at any point with that approach So I used following approach but so far I am not able the way to find out the filename

f = open('log.txt', 'r') for i in f.realines(): if "failed" in i: print "failed files: " f.close()
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Save a reference to the filename temporarily, then add it to a list if it failed:

with open('log.txt') as f: result = [] for line in f: line = line.strip() if not line: continue if '=' in line: name = line.split('= ')[1] if line == 'failed': result.append(name)

After the above, result will be a list with all the failed filenames.

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You can simply modify your code by adding a dump variable.

In[6]: f = open('test', 'r') for i in f.readlines(): if "failed" in i : print "failed files: ", dump.split('= ')[1] dump = i f.close() Output failed files: cdf.wav failed files: rtg.mp3
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