Is there a way to shuffle pairs within a list?

Question

I have a pairs of names in a list that I want to shuffle for xgboost.

Input: [['A1', 'B1'], ['A2', 'B2'], ['A3', 'B3'], ['A4', 'B4'], ['A5', 'B5'], ['A6', 'B6'], ['A7', 'B7'], ['A8', 'B8']]

Expecting: [['A1', 'B1'], ['B2', 'A2'], ['A3', 'B3'], ['A4', 'B4'], ['B5', 'A5'], ['A6', 'B6'], ['A7', 'B7'], ['B8', 'A8']]

I have tried this and it does produce the results I want but I believe there's an easy way.:

rand_number = random.randint(0, 1000)
tlist_rand = []
for t in tlist:
    if rand_number % 3 == 0:
        tlist_rand.append(random.sample(t, len(t)))
        rand_number = random.randint(0, 1000)
    else:
        tlist_rand.append(t)
        rand_number = random.randint(0, 1000)

Input: [['A1', 'B1'], ['A2', 'B2'], ['A3', 'B3'], ['A4', 'B4'], ['A5', 'B5'], ['A6', 'B6'], ['A7', 'B7'], ['A8', 'B8']]

The rand tuple is: [['A1', 'B1'], ['A2', 'B2'], ['A3', 'B3'], ['B4', 'A4'], ['A5', 'B5'], ['A6', 'B6'], ['A7', 'B7'], ['A8', 'B8']]

Answer 1

You can use random.shuffle, this function can shuffle list inplace.