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In this Python FastAPI tutorial, we'll be learning how to use Pydantic schemas to validate API requests and responses in FastAPI. We'll create a schemas file with request and response models, add field validations for things like minimum and maximum length, update our GET endpoints with response models, and create a POST endpoint to add new posts. Pydantic schemas define your API contract - what data goes in and what comes out - and FastAPI uses them for validation, serialization, and automatic documentation. Let's get started...
The code from this video can be found here:
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2026/01/12
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