What is a clean "pythonic" way to implement multiple constructors?

I can't find a definitive answer for this. As far as I know, you can't have multiple __init__ functions in a Python class. So how do I solve this problem?

Suppose I have a class called Cheese with the number_of_holes property. How can I have two ways of creating cheese objects...

1. One that takes a number of holes like this: parmesan = Cheese(num_holes=15).
2. And one that takes no arguments and just randomizes the number_of_holes property: gouda = Cheese().

I can think of only one way to do this, but this seems clunky:

class Cheese:
    def __init__(self, num_holes=0):
        if num_holes == 0:
            # Randomize number_of_holes
        else:
            number_of_holes = num_holes

What do you say? Is there another way?