Difference between class foo and class foo(object) in Python

Question

I know class foo(object) is an old school way of defining a class. But I would like to understand in more detail the difference between these two.

Answer 1

Subclassing object yields a new-style class. Two well known advantages of new-style classes are:

• Metaclasses (like class factories, but works transparently)
• Properties (getters & setters...)