import random

dice = ["1", "2",]

def parse_input(input_string):
    if input_string.strip() in dice:
        return int(input_string)
    else:
        print(f"Please enter a number from {dice[0]} to {dice[-1]}.")
        raise SystemExit(1)

def roll_dice(num_dice)
    roll_results = []
    for _ in range(num_dice):
        roll = random.randint(1, 6)
        roll_results.append(roll)

num_dice_input = input(f"How many dice do you want to roll? [{dice[0]}-{dice[-1]}] ")
num_dice = parse_input(num_dice_input)
print(num_dice)