What changed in Python’s type system through 2024–2026 — PEP 695 type-parameter syntax, PEP 705 ReadOnly, TypedDict, Protocols, NewType, Self, and the patterns I keep reaching for in production.
Modern asyncio in 2026. Structured concurrency with TaskGroup, ExceptionGroup, timeout/cancellation done right, anyio for cross-runtime portability, and the patterns to use (and avoid).
Modern Python tooling worth using in 2026 — uv replaces pip/venv/poetry/pyenv, Ruff replaces flake8/black/isort, ty (Astral) is the fast type checker, plus the project layout and pre-commit setup that pulls it together.
A complete, opinionated production layout for FastAPI in 2026. Pydantic v2, async SQLAlchemy 2.0, Alembic, dependency injection, structured errors, settings, logging, and the project skeleton that survives the first 50 endpoints.
A practical guide to LLM evaluations — what to measure, building eval sets, LLM-as-judge done right, RAG-specific metrics, and integrating evals into CI so you stop shipping silent regressions.
The prompt patterns I keep reaching for in production LLM apps — system prompt structure, role separation, structured output, few-shot, chain-of-thought, prompt caching, and the anti-patterns to skip.
How to design REST APIs that age well: resource modeling, HTTP method semantics, status codes, structured errors, pagination, idempotency, and versioning.
A pragmatic Git workflow for solo developers and small teams: trunk-based commits, sane branching, rebases without fear, and the recovery commands you’ll thank past-you for memorizing.
A practical guide to testing FastAPI: pytest configuration, async HTTP client, transactional database isolation per test, and fixtures for authentication.
A from-first-principles tour of Python decorators: what the @ symbol really does, how to write decorators that take arguments, decorators with state, and the patterns you’ll meet in real codebases.