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  1. node = [['1001', '2008-01-06T02:12:13Z', ['']], 
  2.         ['1002', '2008-01-06T02:13:55Z', ['']],
  3.         ['1003', '2008-01-06T02:13:00Z', ['Lion', 'Rhinoceros', 'Leopard', 'Panda']],
  4.         ['1004', '2008-01-06T02:15:20Z', ['Lion', 'Leopard', 'Eagle', 'Panda', 'Tiger']],
  5.         ['1005', '2008-01-06T02:15:48Z', ['Lion', 'Panda', 'Cheetah', 'Goat', 'Tiger']],
  6.         ['1006', '2008-01-06T02:13:30Z', ['']],
  7.         ['1007', '2008-01-06T02:13:38Z', ['Cheetah', 'Tiger', 'Goat']]]
  8.  
  9.  
  10. result = []
  11. seenanimals = set()
  12. for ident, _, animals in node: 
  13.     for a in animals:
  14.         if a not in seenanimals:
  15.             result.append([ident, a])
  16.             seenanimals.add(a)
  17.  
  18. print(result)
Success #stdin #stdout 0.04s 9316KB
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[['1001', ''], ['1003', 'Lion'], ['1003', 'Rhinoceros'], ['1003', 'Leopard'], ['1003', 'Panda'], ['1004', 'Eagle'], ['1004', 'Tiger'], ['1005', 'Cheetah'], ['1005', 'Goat']]
https://ideone.com/UfL3yC
language:
Python 3 (python  3.12)
created:
7 years ago
visibility:
public

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