taco_shop_name.py

#!/usr/local/bin/python3

from random import choice, randint
import sys

all_letters = "abcdefghijklmnñopqrstuvwxyz"
vowels = "aeiouy"
suffix = "bertos"
consonants = list(filter(lambda x: x not in vowels, all_letters))


def switch_letter(this_letter=None):
    def opposite(letter):
        options = set("vc")
        letter = set(letter)
        return (options - letter).pop()

    options = {'v': vowels,
               'c': consonants}
    if this_letter is None:
        random_start = options[choice('vc')]
        return choice(random_start)
    else:
        return choice(options[opposite(this_letter)])


def taco_shop_controller(length):
    if length <= 0:
        return suffix

    get_letter = switch_letter()
    taco_shop_name = get_letter
    while length > 1:
        if get_letter in vowels:
            get_letter = switch_letter('v')
        else:
            get_letter = switch_letter('c')
        taco_shop_name += get_letter
        length -= 1

    return taco_shop_name + suffix


if __name__ == '__main__':
    length = int(sys.argv[1])
    if length > len(suffix):
        length -= len(suffix)
    else:
        pass

    print(taco_shop_controller(length))