The Magic of Python
summary
Introduces Python’s special (magic/dunder) methods and shows concrete examples for using them. Covers object initialization and representation (__init__, __repr__/__str__), numeric emulation (__add__ and similar), sequence emulation and iteration (__iter__, __getitem__), context managers (__enter__/__exit__), and using abc.AbstractBaseClass to gain functionality by implementing these methods.
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chapters (12)
- 0:00Intro
- 1:09Agenda
- 1:30Magic Methods?
- 4:20Define Custom Behavior
- 7:25Enable Operator Overloading
- 12:16Emulate Container Types
- 14:56getitem__
- 16:53Use Case: Checking for interfaces
- 18:01Use Case: Offer Free Mixin Methods
- 19:53Context Managers
- 23:53@contextlib.contextmanager
- 24:42+ Python Data Model Documentation → Python collections module documentation → A guide to Python's Magic Methods
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