Collections Module in Python

Python’s collections module has specialized container datatypes that can be used to replace Python’s general-purpose containers (dict, tuple, list, and set). We will be studying the following parts of this module:

• ChainMap
• counter
• defaultdict
• deque
• namedtuple
• OrderedDict

There is a sub-module of collections called abc or Abstract Base Classes. These will not be covered in this chapter.

Let’s get started with the ChainMap container!

Overview of ChainMap

A ChainMap is a class that provides the ability to link multiple mappings together such that they end up ...