from __future__ import unicode_literals
import random
import string


def random_alphanumeric(length):
    return "".join(
        str(random.choice(string.ascii_letters + string.digits + "+" + "/"))
        for _ in range(length)
    )


def random_resource_id(size=20):
    chars = list(range(10)) + list(string.ascii_lowercase)

    return "".join(str(random.choice(chars)) for x in range(size))


def random_access_key():
    return "".join(
        str(random.choice(string.ascii_uppercase + string.digits)) for _ in range(16)
    )


def random_policy_id():
    return "A" + "".join(
        random.choice(string.ascii_uppercase + string.digits) for _ in range(20)
    )