Transpose matrix Transposes a two-dimensional list. Use *lst to get the provided list as tuples. Use zip() in combination with list() to create the transpose of the given two-dimensional list. def transpose(lst): return list(zip(*lst)) transpose([[1, 2, 3], [4, 5, 6], [7, 8, 9], [10, 11, 12]]) # [(1, 4, 7, 10), (2, 5, 8, 11), (3, 6, 9, 12)]