Side note: You can use python classes for that. It's a common pattern for me to have something like this in my projects class Holder: pass Simply

Side note: You can use python classes for that. It's a common pattern for me to have something like this in my projects class Holder: pass Simply add any attributes at runtime. It's essentially a different interface for the built-in dict of the instances. Add a bit of getattr magic and you can read undefined attributes, too.