typing.Protocol in Python: Structural Typing
Define lightweight contracts with typing.Protocol and accept compatible objects without requiring explicit inheritance.
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12 articles on this pageasyncio.TaskGroup in Python: Structured Concurrency
Coordinate related tasks with asyncio.TaskGroup while understanding results, failures, cancellation, and gather.
Dependency Injection in FastAPI with Depends
Organize shared API logic with FastAPI Depends, Annotated, sub-dependencies, yield, and test overrides.
pytest Fixtures, Mocks, and monkeypatch in Python
Build clearer tests with fixtures, temporary files, and monkeypatch without testing mocks instead of behavior.
Streamlit with Python: Build a Data Dashboard
Turn a DataFrame into an interactive Streamlit dashboard with filters, metrics, charts, and deliberate caching.
Alembic with Python: Database Migrations
Version schema changes with Alembic and SQLAlchemy, reviewing generated migrations before applying them safely.
Ruff for Python: Linting and Formatting in Practice
Use Ruff for linting, import sorting, and formatting with a small configuration and predictable CI checks.
uv for Python: Projects, Dependencies, and Lockfiles
Set up a Python project with uv, a virtual environment, pyproject.toml, and a reproducible lockfile while understanding what changes from pip.
Documenting Python Projects with Sphinx
Build lean Python documentation with Sphinx, autodoc, docstrings, and type hints, then generate HTML and automate publishing without needless complexity.
Property-Based Testing in Python with Hypothesis
Use Hypothesis with pytest to generate inputs, check invariants, shrink failures, and uncover edge cases that hand-written examples miss.
Python pyproject.toml Guide for Applications and Libraries
Structure pyproject.toml for applications and libraries, separate build and runtime requirements, declare dependencies, and configure tools safely.
Playwright with Python: Browser Automation and Testing
A practical Python Playwright guide covering browser setup, robust locators, state-based waits, downloads, screenshots, pytest, and responsible use.