Reference library

Modern tooling

uv, ruff, pyproject.toml, packaging, and current Python project workflows.

1 match
Modern tooling easy

How to Parse and Extract Nested Data in Python

Load JSON files with Path and recursively extract values by key from nested Python structures using modern typing and standard library.

json pathlib recursion
Python 
import json
from pathlib import Path
from typing import Any, Dict, List, Union

def load_data(filepath: Union[str, Path]) -> Union[Dict[str, Any], List[Any]]:
    """Load JSON data from a file with modern Path handling."""
    path = Path(filepath)
    if not path.exists():
        raise FileNotFoundError(f"File not f…
12 0 Open

Browse by section

Each section groups closely related Python snippets.

Modern tooling — Python code examples

What you will find here

This page collects modern tooling snippets — short, copy-ready Python you can paste into our free online IDE and run without installing anything. Each sample includes a plain-English explanation and the full source code.

Samples vs tutorials and challenges

Samples are quick reference — one concept per page. For step-by-step teaching, use our Python tutorials. To test yourself, try quizzes or coding challenges. Clean up style with the Python formatter.

Related coding tools

Free online Python IDE Write and run Python in your browser — no install. Free Python code formatter Format with autopep8 — side-by-side PEP 8 cleanup. Python code samples Copy-ready snippets to study and run in the IDE.