dice.py

import random


def parse_input(input_string):
    """Return `input_string` as an integer between 1 and 6.

    Check if `input_string` is an integer number between 1 and 6.
    If so, return an integer with the same value. Otherwise, tell
    the user to enter a valid number and quit the program.
    """
    if input_string.strip() in {"1", "2", "3", "4", "5", "6"}:
        return int(input_string)
    else:
        print("Please enter a number from 1 to 6.")
        raise SystemExit(1)


def roll_dice(num_dice):
    """Return a list of integers with length `num_dice`.

    Each integer in the returned list is a random number between
    1 and 6, inclusive.
    """
    roll_results = []
    for _ in range(num_dice):
        roll = random.randint(1, 6)
        roll_results.append(roll)
    return roll_results


# ~~~ App's main code block ~~~
# 1. Get and validate user's input
num_dice_input = input("How many dice do you want to roll? [1-6] ")
num_dice = parse_input(num_dice_input)
# 2. Roll the dice
roll_results = roll_dice(num_dice)

print(roll_results)  # Remove this line after testing the app