Transform “list of tuples” into a flat list or a matrix

Question

With Sqlite, a \"select..from\" command returns the results \"output\", which prints (in python):

>>print output
[(12.2817, 12.2817), (0, 0), (8.52, 8.         


        

Answer 1

By far the fastest (and shortest) solution posted:

list(sum(output, ()))

About 50% faster than the itertools solution, and about 70% faster than the map solution.