Maintenance

Site is under maintenance — quizzes are still available.

Go to quizzes
Sponsored Reserved space — layout preview until AdSense is connected
Reference library

Files & data

Read and write files safely; parse JSON, CSV, and common text formats.

2 matches
Sponsored Reserved space — layout preview until AdSense is connected
Files & data medium

Generate a Beautiful Folder Tree Visualization in Python

A Python utility that creates a visual tree of a directory structure, excluding common files, with configurable depth.

folder tree directory visualization
Python
import os
from pathlib import Path

class FolderTree:
    def __init__(self, root_path=".", ignore_list=None, max_depth=3):
        self.root = Path(root_path)
        self.ignore = set(ignore_list or [".git", "__pycache__", ".DS_Store"])
        self.max_depth = max_depth
        
    def generate(self):
        tree…
3 0 Open
Files & data medium

How to Audit Environment Variable Files for Missing Values in Python

A Python tool that reads an environment variable file and reports any variables with empty or missing values.

environment-variables file-audit configuration
Python
import os
import re
from pathlib import Path

def audit_env_file(filepath: str) -> None:
    """
    Audit an environment variable file for missing values.
    Prints file status and lists variables that have empty values.
    """
    path = Path(filepath)
    if not path.exists():
        print(f"Error: File '{filepa…
2 0 Open

Browse by section

Each section groups closely related Python snippets.

Files & data — Python code examples

What you will find here

This page collects files & data 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.