A tabletop dice roller in python that horribly abuses the language.

roll.py

import random
import re
import sys
from functools import lru_cache


@lru_cache()
def generate_die(sides):
    return list(range(1, sides + 1))


class Roller:
    _dice_pattern = re.compile(r'^d([0-9]+)$')

    def __getattr__(self, attr):
        if attr in self.__dict__:
            return self.__dict__[attr]

        dice_match = re.search(self._dice_pattern, attr)
        if dice_match:
            die_size = int(dice_match.groups()[0])

            def die_roller(nDice=1):
                dX = generate_die(die_size)
                return [random.choice(dX) for x in range(nDice)]

            self.__dict__[attr] = die_roller
            return die_roller

        raise AttributeError("type object'Roller' has no attribute '{0}'".format(attr))


random.seed()
sys.modules[__name__] = Roller()