Randomly pick a list that contains the specific element

Question

Given several lists

l = [[1,2,3,4,5],[1,6,7,8],[2,3,4],[1,9,10,13]]

Is there an easy method to randomly pick a list that contains 1 using random.choice? I tried simple codes like

random.choice(1 in l)

or

random.choice(l, 1=True), but none of them work.

Answer 1

There is no built-in method (that would be pretty niche) but you can do the following:

import random
my_lists = [[1,2,3,4,5],[1,6,7,8],[2,3,4],[1,9,10,13]]
random_list = random.choice([sublist for sublist in my_lists if 1 in sublist])

or using filter:

random_list = random.choice(list(filter(lambda sublist: 1 in sublist, my_lists)))