Transpose a list or tuple in Python #python

transpose.py

l = [
    [1,2,3,4],
    [5,6,7,8],
    [9,10,11,12]
]

# the result shape will always produce from shortest row
lt = list(map(list, zip(*l)))

# [
#     [1, 5, 9],
#     [2, 6, 10],
#     [3, 7, 11],
#     [4, 8, 12]
# ]

t = (
    (1,2,3,4),
    (5,6,7,8),
    (9,10,11,12)
)

# the result shape will always produce from shortest row
tt = tuple(zip(*l))

# (
#     (1, 5, 9),
#     (2, 6, 10),
#     (3, 7, 11),
#     (4, 8, 12)
# )