Getting More out of our Objects With Descriptors

Run tests:

make test

A First Look at Descriptors

• descriptor_1.py: First high-level example illustrating the descriptor protocol.

Methods

Files for these examples are descriptors_methods_{1,2,3,4}.py, respectively for:

• __get__
• __set__
• __delete__
• __set_name__

Descriptors in Action

• An application of descriptors: descriptors_pythonic_{1,2}.py
• Different forms of implementing descriptors (__dict__ vs. weakref): descriptors_implementation_{1,2}.py

Uses of Descriptors in CPython

• Internals of descriptors: descriptors_cpython_{1..3}.py.
• Functions and methods: descriptors_methods_{1..4}.py.
• __slots__
• @property, @classmethod, and @staticmethod.

Uses of descriptors

• Reuse code
• Avoid class decorators: descriptors_uses_{1,2}.py