Python objects with special methods – Create better classes!

Learn Python’s datamodel with operator overloading and emulate built-in types by implementing magic (dunder) methods

Created by: Loek van den Ouweland
Passionate Python Teacher

What Will I Learn?

• Explain the origin of the names Python datamodel, magic methods, dunder methods and special methods.
• Write an indexer to support subscripting with the __getitem__ method
• Make objects callable with __call__
• Define the object identity
• Apply __iter__, __next__ to make your objects iterable
• Specify object equality with __eq__, __ne__, __lt__, __gt__, __le__, __ge__
• Wrap existing code into context managers with __enter__ and __exit__
• Describe how objects are constructed by methods __new__ and __init__

Requirements

• Basic knowledge of classes and objects in Python
• Intermediate programming experience

Target audience

• Python programmers who want understand Python better
• Python programmers who want to understand how language features like built-in functions and operators map to special methods in classes