How to get four random numbers in a row?

Question

Python

I'm new to python so I don't know if my version is better

import random
random_number = ''
for x in range(4):
  random_number = random_number + str(random.randint(0, 9))

Answer 1

random.choices(range(10), k=4)

Answer 2

Quite. Shorter, but less readable, can be written like this:

import random
random_digits = 3
print(''. join([str(random.randint(0, 9)) for _ in range(random_digits)]))

Answer 3

If you don't need repeats

from random import randint
random_number = ""

while len(random_number) < 4:
    a = str(randint(0, 9))
    if a not in random_number:
        random_number += a