Articles tagged "pydantic"
13 min readIntermediate
Python Dataclasses vs Pydantic v2: Which to Use in 2026 (With Benchmarks)
Python dataclasses vs Pydantic v2 in 2026: feature comparison, performance benchmarks (Pydantic v2 is 5-50x faster than v1), migration guide from Pydantic v1, and decision guide by use case.
7 min readIntermediate
Python Type Hints and mypy: Write Self-Documenting Code (2026)
Python type hints and mypy tutorial 2026. Cover Optional, Union, TypedDict, Protocol, Generics. Run mypy --strict to catch bugs before runtime. Essential for Pydantic v2 and FastAPI.
4 min readIntermediate
PydanticAI Tutorial 2026: Build Type-Safe AI Agents in Python
PydanticAI tutorial 2026: build type-safe AI agents in Python with FastAPI-style dependency injection. Covers tools, structured results, testing without LLM calls, and local Ollama integration.
7 min readIntermediate
Structured Output from LLMs with Python: Reliable JSON Using Pydantic and Instructor (2026)
Get reliable JSON from LLMs using Python. Learn to use the instructor library with Pydantic to extract structured data from OpenAI, Claude, and local Ollama models. 2026 guide.