11. How can you access the attributes of an object in Python?
12. How can you inherit a class in Python?
13. What is method overriding in Python classes?
14. What is the purpose of the __str__ method in Python classes?
15. What is the purpose of the __del__ method in Python classes?
16. Which function is called when the following Python code is executed?
f = foo()
format(f)
f = foo()
format(f)