x = [[[[1],[2],[3],[4],[5],[6],[7],[8],[9],[10]]]]print([x for x in x for x in x for x in x for x in x])
Standard input is empty
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
The brand new service which powers Ideone!
Widget for compiling and running the source code in a web browser!