Transpose a matrix
Write transpose(m) that turns the rows of a rectangular list-of-lists into columns.
transpose([[1, 2, 3],
[4, 5, 6]])
# [[1, 4], [2, 5], [3, 6]]Show hint
zip(*m) passes each row as a separate argument to zip.
Show solution
def transpose(m):
return [list(col) for col in zip(*m)]zip pairs up the first items of every row, then the second items, and so on, which is exactly a column. Each column comes back as a tuple, so list(col) converts it.
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