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Simplifying Unions in Python Type Hints
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Simplifying Unions in Python Type Hints

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Mike Driscoll
Feb 21, 2024
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The Python Papers
Simplifying Unions in Python Type Hints
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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…

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