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  1. import re
  2. s = '''INFO:werkzeug:127.0.0.1 - - [20/Sep/2018 19:40:00] "GET /socket.io/?polling HTTP/1.1" 200 - 
  3. INFO:engineio: Received packet MESSAGE, ["key",{"data":{"tag1":12,"tag2":13,"tag3": 14"...}}]'''
  4.  
  5. print(re.findall(r'\[([^][]*"key"[^][]*)]', s))
Success #stdin #stdout 0.01s 27744KB
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Standard input is empty
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['"key",{"data":{"tag1":12,"tag2":13,"tag3": 14"...}}']
https://ideone.com/V3ylCV
language:
Python 3 (python  3.9.5)
created:
5 years ago
visibility:
secret

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