import random
import string


def make_random_string(length=10):
    """
    Makes a random alphanumeric string of some length
    
    Args:
        length (int, optional): Length of the random string to return. Defaults to 10.
    
    Returns:
        str: Random alphanumeric string of the specified length.
    """
    return ''.join(
        random.choice(string.ascii_lowercase + string.digits) 
        for _ in range(length)
    )