Typeguard Examples: Mandatory Runtime Type Checking in Python
· 7 min read
Typeguard is a lightweight yet powerful Python library that enforces type hints at runtime. Unlike static checkers (like MyPy or Pylance), which only check code before execution, Typeguard uses function decorators to ensure that function arguments and return values strictly adhere to their type annotations during execution. If a type mismatch occurs, Typeguard raises a TypeError, effectively making your type hints mandatory contracts.
This article explores various practical use cases and examples for deploying Typeguard.