Attribute lookup in Python goes through several steps:
On a foggy Saturday morning, Lina sketched a small program to model a library. At her desk, she drew a rectangle labeled Book with arrows to attributes: title, author, year, and checked_out. She typed:
The central theme of the course is Python’s fundamental architecture: everything—from integers and functions to modules and classes—is a first-class object.
Requires __iter__ (returns iterator) and __next__ .
MyClass = type('MyClass', (), {})