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  1. from itertools import chain
  2.  
  3. d = [[1],[2],[3],[3]]
  4.  
  5. print(set(chain.from_iterable(d)))
Success #stdin #stdout 0.03s 9216KB
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Standard input is empty
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{1, 2, 3}
https://ideone.com/KA63iA
language:
Python 3 (python  3.9.5)
created:
3 years ago
visibility:
public

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