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Python Code Samples

Medium snippets you can copy, study, and run in the browser editor.

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Automation & scripting medium

Track File Changes with Version History in Python

A Python utility that monitors a file for changes, creating versioned backups with SHA-256 hashing to detect modifications and store a local JSON history.

file-monitoring versioning automation
Python
import hashlib, json, os, shutil, time
from pathlib import Path

class FileTracker:
    def __init__(self, history_file="file_history.json"):
        self.history_file = Path(history_file)
        self.history = self._load_history()

    def _load_history(self):
        if self.history_file.exists():
            retur…
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Guide: free Python code samples library

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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.

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  2. Open a sample, read How it works, and copy the code block
  3. Run it in the IDE, tweak values, then take a related quiz or tutorial lesson

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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.