Simplifying Unions in Python Type Hints

Python 3.10 has several new typing features. They are given in detail here:

• PEP 604, Allow writing union types as X | Y

• PEP 613, Explicit Type Aliases

• PEP 612, Parameter Specification Variables

This tutorial focuses on talking about PEP 604, which makes writing union types easier when adding type annotation (AKA: type hinting) to your codebase.

Unions Ye Old…