MirahLabs Engineering Blog
Technical insights, tutorials, and architectures written by our design and backend engineers.
FastAPI Dependency Injection: Design Patterns for Clean Architecture
Dependency Injection in FastAPI is a core feature. Learn how to manage database sessions, security credentials, and mock external service classes in tests.
Unit Testing Python Code with Pytest: Fixtures, Mocking, and Parametrization
Upgrade your testing workflows. Explore how Pytest's advanced features—fixtures, parameter matrix testing, and mock objects—speed up test execution.
Building a Full-Stack AI Writing Assistant with Flask and OpenAI
Build a production-ready AI writing assistant that generates, refines, and SEO-optimizes content. This end-to-end guide covers Flask backend, streaming responses, and a clean JavaScript frontend.
Writing C Extensions in Python: Cython, Pybind11, and Ctypes
When Python is too slow, compile key functions to C. Compare Cython, Pybind11, and ctypes for raw performance speedups in numeric and CPU-bound algorithms.
Metaprogramming in Python: Metaclasses, Class Decorators, and Code Generation
Write code that writes code. Learn how to use class decorators, __new__ and __init__ overrides, and custom metaclasses to customize class creation dynamically.
Advanced Python Generators: Coroutines, Subgenerators, and yield from
Generators are more than lazy lists. Master coroutine communication, two-way data streaming, and delegation using the `yield from` expression.