How to put a list in random order?

from random import shuffle

data = ['A','B','C','D']

shuffle(data)
print(data)

How to pick a random sample?

import random

# random set with repeats
ALPHABET = list('AGCT')
dna = [random.choice(ALPHABET) for i in range(50)]
print(''.join(dna))


# random set without repeats
NUMBERS = range(1, 101)
print(random.sample(NUMBERS, 10))