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

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!