本文共 897 字，大约阅读时间需要 2 分钟。

• Abstract

  Python descriptors were introduced in Python 2.2, along with new style classes

  Defines descriptors, summarizes the protocol, and shows how descriptors ara called. Examines a custom descripto and several built-in Python descriptors including

  functions,

  properties,

  static methods,

  class methods.

  Shows how each works by giving a pure Python equivalent and a sample application.

  Learning about descriptors not only provides access to a larger toolset, it creates a deeper understanding of how Python works and appreciation for the elegance of its design.

• Definition and Introduction

  In general, a descriptor is an object attribute with “binding behavior”, one whose attribute access has been overridden by methods in the descriptor protocol.

  Those methods are __get__(), __set__(),and __delete__().

  If any of those methods are defined for an object, it is said to be a descriptor.

• Reference

转载地址：http://syge.baihongyu.com/