print doesnt work in a function

[ony]

Ive been trying to make a random number generator with some luck stuff but im stuck here

import random

randomnumber = random.sample(range(1, 1000), 1)
print(randomnumber)


def luckfactorfunction():
    if randomnumber != 777:

        print("jackpot")
    else:
        if randomnumber != range(1, 776) and range(778, 1000):
            print("better luck next time")

    luckfactorfunction()

print doesnt work even though i cant find any errors