How to output non-repeating elements of a python list?

Question

Python

I want to display random 3 elements from the list so that they do not repeat.

import random
a = ["1", "2", "3", "4"]

random.shuffle(a)
print(a[:3])

The code works, but it outputs this: ['2', '3', '1']

And I need it without: ['', '', '']

How can I do that?

Answer 1

The code works, but it outputs this: ['2', '3', '1']
And I need it without: ['', '', '']

int(''.join(['2', '3', '1']))   # ['2', '3', '1'] можно заменить на a[:3] 
# 231