You call that russian roulette? This is real russian roulette. Dying is a 1/6 probability.

#!/usr/bin/env python3
import random

barrel = [0, 0, 0, 0, 0, 1]
random.shuffle(barrel)

print("Russian Roulette")
for i in barrel:
  input("Press enter to shoot")
  if i == 1:
    print("You are dead.")
    exit()
  else:
    print("Phew. You survived.")