Python

Python Tutorials & Guides

Practical Python guides from async programming and API frameworks to testing, cloud integration and performance optimization. Real code, production patterns.

FastAPI Django Asyncio Testing AWS Docker

Web Frameworks

FastAPI

FastAPI Tutorial: Build REST APIs with Python

Pydantic models, dependency injection, async endpoints, JWT auth, SQLAlchemy integration and deployment.

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Django REST

Django REST Framework: Building APIs

Serializers, ViewSets, JWT auth, permissions, filtering, pagination, throttling and optimization.

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Asyncio

Python Asyncio: Async/Await Complete Guide

Event loop, coroutines, asyncio.gather, async context managers, aiohttp and common pitfalls.

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Language Deep Dives

Decorators

Python Decorators: Complete Guide with Examples

Decorator syntax, arguments, class decorators, functools.wraps and practical patterns (retry/cache/logging).

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Type Hints

Python Type Hints: Complete Static Typing Guide

Optional/Union/TypeVar, Protocol, TypedDict, Literal, mypy usage and runtime validation with beartype.

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Design Patterns

Python Design Patterns: Practical Guide

Singleton, Factory, Observer, Strategy, Repository pattern and dependency injection in Python.

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Performance

Python Performance: Profiling and Optimization

cProfile, line_profiler, NumPy vectorization, multiprocessing vs asyncio, lru_cache and Cython basics.

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Data & Databases

Pydantic

Pydantic V2: Data Validation in Python

BaseModel, field validators, nested models, settings management, JSON serialization and V2 migration.

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SQLAlchemy

SQLAlchemy ORM: Database Access in Python

Declarative models, relationships, async SQLAlchemy 2.0, Alembic migrations and query optimization.

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Redis

Python Redis: Caching, Sessions and Pub/Sub

redis-py, caching patterns, distributed locking, Pub/Sub, Redis Streams and connection pooling.

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Cloud, DevOps & Testing

Pytest

Pytest: Complete Testing Guide for Python

Fixtures, parametrize, mocking, pytest-asyncio, MSW-style API mocking, coverage and CI integration.

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Celery

Celery: Distributed Task Queue with Redis

Task definition, Redis broker, periodic tasks with Beat, retry logic, Flower monitoring and Django integration.

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AWS boto3

Boto3: AWS SDK for Python Complete Guide

Clients vs resources, S3/EC2/Lambda/DynamoDB/SQS operations, paginators and error handling.

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Docker

Dockerizing Python Apps: FastAPI, Django and Flask

Base image selection, multi-stage builds, non-root user, health checks and production Dockerfile patterns.

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Logging

Python Logging: Best Practices for Production

Formatters, structured logging with structlog, JSON logging, correlation IDs and FastAPI middleware.

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