Python’s ChainMap from the collections module provides an efficient tool for managing several dictionaries as a single one. This class is handy when you have multiple dictionaries representing different scopes or contexts and need to set access priorities to the underlying data.

ChainMap groups multiple dictionaries and mappings in an updatable view that works pretty much like a dictionary. You can use ChainMap objects to efficiently work with several dictionaries, define key lookup priorities, and manage multiple contexts in Python.