A comprehensive guide to implementing type safety in Python for developers familiar with TypeScript. Covers Python's typing package features including basic type annotations, Final constants, Literal unions, exhaustiveness checking with Never, NamedTuple for structured returns, TypedDict for dictionary shapes, Protocols for structural typing, and Pydantic's discriminated unions. Demonstrates how Python's type system can provide similar static analysis capabilities to TypeScript, making large-scale Python projects more maintainable through IDE intelligence and type checking tools.
Table of contents
Basic Type AnnotationsFinalUnion Types and String LiteralsExhaustiveness CheckingNamedTupleTypedDictProtocolsPydanticDiscriminated UnionsType-Safe Python for TypeScript DevelopersSort: