antall_brus = int(input("Antall:"))
sannhets_variabel = True


while sannhets_variabel:
    want = input("what you want?")
    if want == "cola":
        cola_output = int(input("Antall cola out:"))
        antall_brus = antall_brus - cola_output
        #antall_brus -= cola_output
        if antall_brus <= 0:
            print("Brusautomat er tom")
            antall_brus = int(input("fyller p?:"))
            print("ferdig")
    elif want == "sprite":
        sprite_output = int(input("antall sprite out:"))
        antall_brus = antall_brus - sprite_output
        if antall_brus <= 0:
            print("brusautomat er tom")
            antall_brus = int(input("fyller p?:"))
            print("ferdig")
    elif want == "stopp":
        sannhets_variabel = False