import random


def generate_random_string(length=500, alphabet="azertyuiopqsdfghjklmwxcvbn1234567890"):
    """
        :param length: length of string wanted
        :param alphabet: alphabet from witch characters are sampled
        :return: random string of size `length`
    """
    return ''.join(random.choice(alphabet) for x in range(length))