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  1. import re
  2. rx = r'^([^_]+)(?:_\1)*(.*)_\d+\.\w+$'
  3. strs = ["server_server_dev1_check_1233.zzz", "server_server_qa1_run_1233.xyz", "server_server_dev2_1233.qqa", "server_dev1_1233.zzz", "data_data_dev9_check_660.log"]
  4. for s in strs:
  5. 	print(re.sub(rx, r'\1\2', s))
  6.  
Success #stdin #stdout 0.02s 27792KB
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stdin
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Standard input is empty
stdout
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server_dev1_check
server_qa1_run
server_dev2
server_dev1
data_dev9_check
https://ideone.com/EzBZCB
language:
Python 3 (python  3.12)
created:
7 years ago
visibility:
secret

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