Transpose list of lists

Question

Let\'s take:

l = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]

The result I\'m looking for is

r = [[1, 4, 7], [2, 5, 8], [3, 6, 9]]
         


        

Answer 1

Three options to choose from:

1. Map with Zip

solution1 = map(list, zip(*l))

2. List Comprehension

solution2 = [list(i) for i in zip(*l)]

3. For Loop Appending

solution3 = []
for i in zip(*l):
    solution3.append((list(i)))

And to view the results:

print(*solution1)
print(*solution2)
print(*solution3)

# [1, 4, 7], [2, 5, 8], [3, 6, 9]