58 – Real-World Python Projects – Smart File Rename Utility

This is a very practical automation tool used by developers, offices, photographers, YouTubers, and data teams.

📌 What Is a Smart File Rename Utility?

A Smart File Rename Utility automatically renames files based on:

File type
Date created / modified
Content keywords
Patterns & rules
AI-generated names (optional)

Instead of this 👇

IMG_20230921_143512.jpg

You get this ✅

Wedding_Photos_2023_01.jpg

🎯 Real-World Use Cases

User	Usage
Photographers	Batch rename images
Offices	Rename scanned documents
Developers	Organize code/log files
YouTubers	Rename video assets
Students	Organize notes
Data teams	Dataset cleanup

🧠 How It Works (Logic Flow)

Select Folder
    ↓
Read Files
    ↓
Apply Naming Rules
    ↓
Preview Changes
    ↓
Rename Safely

🛠️ Tech Stack

Python
os, pathlib, datetime
re (regex)
tkinter or streamlit (UI – optional)

📁 Project Structure

smart_rename/
│── rename.py
│── rules.py
│── preview.py
│── ui.py

🔑 Core Features

✔ Batch rename
✔ Undo rename
✔ Rule-based naming
✔ Date-based naming
✔ File-type grouping
✔ Conflict handling
✔ Preview before rename

🧩 Step 1 — Read Files from Folder

import os

def get_files(folder):
    return [f for f in os.listdir(folder) if os.path.isfile(os.path.join(folder, f))]

🧩 Step 2 — Rule-Based Rename Logic

Example Rule:

<Project>_<Date>_<Number>.<ext>

from datetime import datetime

def generate_name(index, ext):
    date = datetime.now().strftime("%Y%m%d")
    return f"Project_{date}_{index}{ext}"

🧩 Step 3 — Rename Files Safely

import os

def rename_files(folder):
    files = get_files(folder)
    for i, file in enumerate(files, start=1):
        name, ext = os.path.splitext(file)
        new_name = generate_name(i, ext)
        os.rename(
            os.path.join(folder, file),
            os.path.join(folder, new_name)
        )

👀 Step 4 — Preview Before Rename (Important)

def preview(folder):
    files = get_files(folder)
    for i, file in enumerate(files, start=1):
        name, ext = os.path.splitext(file)
        print(file, "→", generate_name(i, ext))

↩️ Step 5 — Undo Feature (Pro Level)

history = {}

def rename_with_undo(folder):
    files = get_files(folder)
    for i, file in enumerate(files):
        new = generate_name(i+1, os.path.splitext(file)[1])
        history[new] = file
        os.rename(file, new)

def undo():
    for new, old in history.items():
        os.rename(new, old)

🧠 Smart Features (Advanced)

📅 Date-Based Rename

Invoice_2024_09.pdf

🔢 Auto Numbering

Report_001.txt

🔠 Case Conversion

my file.txt → MY_FILE.txt

🧾 Regex Cleanup

import re
clean = re.sub(r"[^a-zA-Z0-9_]", "", filename)

🖥️ Optional GUI (Tkinter)

from tkinter import filedialog

folder = filedialog.askdirectory()
preview(folder)

🤖 AI-Powered Rename (Optional)

Rename based on content (PDF / text):

def ai_name(content):
    return "Meeting_Notes"

⚠️ Safety Best Practices

✔ Always preview
✔ Dry-run mode
✔ Skip existing filenames
✔ Logging changes
✔ Undo support

📈 Resume-Ready Description

“Developed a Smart File Rename Utility in Python supporting batch processing, rule-based naming, preview and undo functionality, helping users organize files efficiently.”

🧠 Skills You Learn

✔ Python Automation
✔ File Handling
✔ Regex
✔ UI Integration
✔ Real-World Tool Design