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  1. from itertools import chain
  2. A = [[1,2], [3,4]]
  3. print list(chain(*A))
  4.  
Success #stdin #stdout 0.09s 10840KB
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Standard input is empty
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[1, 2, 3, 4]
https://ideone.com/RfJpT
language:
Python (cpython 2.7.16)
created:
11 years ago
visibility:
public

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