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  1. import fileinput
  2.  
  3. last = None
  4. for line in fileinput.input():
  5.     mark, sep, value = line.partition('\t')
  6.     if not sep: continue # skip lines without a tab
  7.     if mark.startswith('>WB'):
  8.        last = value.strip()
  9.     elif mark.strip() == 'IV':
  10.        print('%s\t%s' % (last, value.strip()))
Success #stdin #stdout 0.02s 5908KB
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stdin
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>WB02	F27C8.1  
IV	B-9641      
>WB03	F07C3.7   
>WB04	F52H2.2   
>WB04	F52H2.2   
>WB05	T13A10.10     
IV	B-15643   
IV	B-11650   
IV	B-13649
stdout
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F27C8.1	B-9641
T13A10.10	B-15643
T13A10.10	B-11650
T13A10.10	B-13649
https://ideone.com/BOnXg
language:
Python 3 (python  3.9.5)
created:
12 years ago
visibility:
secret

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