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.")