Mastering Object-oriented Python

Part 2. Persistence and Serialization

Serializing and Saving – JSON, YAML, Pickle, CSV, and XML

Storing and Retrieving Objects via Shelve

Storing and Retrieving objects via SQLite

Transmitting and Sharing Objects

Configuration Files and Persistence

Persistence and Serialization

A persistent object is one that has been written to some storage medium. The object can be retrieved from storage and used in a Python application. Perhaps the object was represented in JSON and written to the filesystem. Perhaps an object-relational mapping (ORM) layer has represented the object as rows in SQL tables to store the object in a database.

Serializing objects has two purposes. We serialize objects in order to make them persistent in the local filesystem. We also serialize ...