#Python

Property-Based Testing in Python with Hypothesis

Let Hypothesis generate the test inputs you'd never type and shrink failures to minimal repros.

Tutorial · 1w ago2

Security Code Fails Silently. Test It Like It Does.

A FastAPI hardening pass shows why exception handlers, logging, and secret sweeps each deserve their own regression tests.

Article · 1w ago5

Determinism, Not Rust, Is NautilusTrader's Real Lesson

The trending trading engine's single-threaded, replayable core teaches more than its headline language rewrite.

Article · 1w ago2

Trace Multi-Agent LLM Pipelines with Langfuse and OpenTelemetry

Instrument a two-agent Claude pipeline so every LLM call, tool hop, and token cost lands in one trace.

Tutorial · 1w ago0

Optimize LLM Prompts Automatically with DSPy Instead of Hand-Tuning

Declare the task, score it against labeled data, and let DSPy's MIPROv2 compile a better prompt.

Tutorial · 1w ago0

Stop Building Per-Tenant Claude Rate Limiters in FastAPI

Anthropic workspaces already enforce per-tenant limits; your dependency injection should do the wiring, not the throttling.

Article · 2w ago0

Detect AI-Generated Images, Audio, and Text with Open-Source Models

Wire three Hugging Face classifiers into one local pipeline that flags synthetic media before it reaches users.

Tutorial · 2w ago0

Django Goes Annual and Makes Every Release an LTS

Starting January 2028, calendar versioning and universal three-year support replace Django's two-tier LTS system.

Article · 2w ago0

Track Your LLM API Spend with a Python Token Usage Dashboard

Log tokens and cost for every OpenAI, Anthropic, and Gemini call, then chart spend in Streamlit.

Tutorial · 2w ago0

Teach Your AI Agent to Browse the Web with Claude Computer Use

Wire Claude's computer-use tool to a Playwright browser so it can screenshot, click, and type autonomously.

Tutorial · 4w ago0

Cut Your Claude API Bill by 90% with Prompt Caching and Batches

Measure real token costs, then stack prompt caching and the Batches API to slash them.

Tutorial · 4w ago0

Deploy a Python FastAPI Backend on Vercel Serverless Functions

Ship a FastAPI app to Vercel with zero-config framework detection and a minimal vercel.json.

Tutorial · 4w ago0

Prove Your Python Code Correct with the Z3 SMT Solver

Encode a scheduler's invariants in Z3, get a counterexample, then a machine-checked proof for every input.

Tutorial · 1mo ago0

Catch Python Bugs Before Runtime with Astral's ty Type Checker

Install Astral's blazing-fast ty, wire it into VS Code and pre-commit, and stop shipping type errors.

Tutorial · 1mo ago0

Reflex's XY Wins by Not Drawing Your Data

The new Python charting library's GPU pitch hides the real trick: screen-space aggregation in Rust.

Article · 1mo ago0