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Copy-ready Python snippets by topic and difficulty — short, focused, and runnable in the browser editor.

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Automation & scripting medium

Find Unused Python Packages Automatically

Scan a Python project's source files for imports and list installed packages not imported anywhere.

unused-packages static-analysis ast

Python

import pkg_resources
import ast
import os
import sys
from pathlib import Path

def find_imports_in_project(project_dir="."):
    imports = set()
    for py_file in Path(project_dir).rglob("*.py"):
        try:
            with open(py_file, "r") as f:
                tree = ast.parse(f.read())
            for node in …

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Guide: free Python code samples library

Copy-ready Python snippets for learners and developers

PythonSkillset code samples are short, focused examples organised by topic and difficulty. Every snippet is server-rendered HTML — readable by search engines and easy to copy. Open any sample, read the notes, copy the code, then press Try in editor to run it in the browser with Pyodide.

How to use this library

Pick a topic section — strings, lists, files, functions, and more
Open a sample, read How it works, and copy the code block
Run it in the IDE, tweak values, then take a related quiz or tutorial lesson

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.

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.