uv Python Tutorial: Build a CLI Tool From Scratch
Step-by-step uv tutorial: create a real Python CLI project, manage deps, run tests, lint with ruff, build a wheel, and ship it in Docker — from scratch.
Python
Pyrefly vs mypy vs ty: Which Python Type Checker Should You Use in 2026?
Pyrefly 1.0 checks 1.85M lines/sec with 87.8% conformance, mypy 2.0 adds parallelism, ty hits sub-10ms updates. Full benchmarks and migration guide.
Spec-Driven Development: Build a Python CLI From Spec to Code
Build a complete Python CLI expense tracker using GitHub Spec Kit and Claude Code. Full walkthrough from requirements to working code in 30 minutes.
Gemini CLI Tutorial: Setup, Configuration, and a Real Python Project
Set up Google's free Gemini CLI in 5 minutes, configure GEMINI.md, add MCP servers, and build a Python project — all on the 1,000 requests/day free tier.
MarkItDown vs Docling vs Marker: PDF to Markdown for LLMs
Three open-source PDF-to-Markdown tools for RAG and LLM pipelines, tested on real documents. Speed, table fidelity, install pain, and which one to pick.
FastMCP in Python: Build a Real MCP Server (2026 Guide)
Build a production-ready MCP server in Python with FastMCP 3.2 — tools, resources, prompts, GitHub OAuth proxy, MCP Inspector, and Claude Desktop hookup.
Python t-strings (PEP 750): A Practical Tutorial With Real Examples
Python 3.14 t-strings (PEP 750) let you intercept values before string interpolation. Hands-on tutorial with SQL safety, HTML escaping, and structured logging.
Polars vs Pandas in 2026: Performance Benchmarks, Real Numbers, and When to Switch
Polars vs Pandas in 2026: performance benchmarks with real numbers — 3-11x speedups on large datasets, but Pandas still wins for small data and ML pipelines. …
mypy vs Pyright vs ty: Python Type Checker Comparison (2026)
mypy vs Pyright vs ty — full comparison of speed, conformance, and IDE integration. Pyright leads at 98% spec conformance, ty is 10-60x faster but passes only …
Python 3.14 Free-Threading: Real Benchmarks, Real Breakage, Real Code
Python 3.14 drops the GIL for good. Real benchmarks show 3.5x speedups on 4 cores. See which libraries break and how to install the free-threaded build.