Python-сообщество

 import random
my_data = [[a,b,c] for a in range (10) for b in range (10)
           for c in ('q','w','e','r','t','y','u','i','o')]
for i in range(20):
    ts = random.sample(my_data, 20)
    for a in ts:
        ans = a.pop()
        print (a, 'last:', ans) 

[7, 3] last: u
[4, 9] last: i
[3] last: 1
[2] last: 3
[2, 0] last: r
[7, 1] last: q
[9, 4] last: t
[2] last: 2
[0, 4] last: i
[4, 2] last: o
[3] last: 5
[5, 7] last: e

import random
my_data = [[a,b,c] for a in range (10) for b in range (10)
           for c in ('q','w','e','r','t','y','u','i','o')]
for i in range(20):
    ts = random.sample(my_data, 20)
    for a in ts:
        ans = a[-1]
        print (a[:-1], 'last:', ans)  

>>> lst = [1, 2, 3]
>>> lst
[1, 2, 3]
>>> lst.pop()
3
>>> lst
[1, 2]
>>>