bulk-rename-signalsenryu 0.1.0

Bulk rename files based on a pattern

Bulk Rename

A CLI utility for bulk renaming files based on a pattern.

Installation

Install via pip:

pip install bulk-rename-signalsenryu

Or install via uv:

uv pip install bulk-rename-signalsenryu

Usage

After installation:

bulk-rename --help

Or run without installing:

# Using Python module
python -m bulk_rename --help

# Using uv run (from project directory)
uv run bulk-rename --help

# Using uvx (runs directly without installation)
uvx bulk-rename-signalsenryu --help

Available Options

-d, --path PATH        Directory containing files to rename (required)
-p, --pattern PATTERN  Naming pattern, e.g., "video_{:03d}" (required)
-e, --extension EXT    File extension to filter, e.g., "mp4" (required)
-s, --start NUM        Starting index for numbering (default: 1)
--version              Show version and exit

Examples

Basic Usage

Suppose you have a directory with video files:

ls videos/
a.mp4  b.mp4  c.mp4

Rename them with zero-padded numbering:

bulk-rename -d ./videos -p "video_{:03d}" -e mp4

Or with uvx:

uvx bulk-rename -d ./videos -p "video_{:03d}" -e mp4

Preview and confirm:

✅ videos/a.mp4 -> videos/video_001.mp4
✅ videos/b.mp4 -> videos/video_002.mp4
✅ videos/c.mp4 -> videos/video_003.mp4
Proceed? (y/n): y

Result:

ls videos/
backup_2026-01-20_08-48-13.txt  video_001.mp4  video_002.mp4  video_003.mp4

A backup file is automatically created:

cat videos/backup_2026-01-20_08-48-13.txt
videos/a.mp4 -> videos/video_001.mp4
videos/b.mp4 -> videos/video_002.mp4
videos/c.mp4 -> videos/video_003.mp4

Custom Starting Index

Start numbering from 10:

bulk-rename -d ./photos -p "IMG_{:02d}" -e jpg -s 10

Result:

photos/x.jpg -> photos/IMG_10.jpg
photos/y.jpg -> photos/IMG_11.jpg
photos/z.jpg -> photos/IMG_12.jpg

Handling Conflicts

If target files already exist, the tool detects conflicts:

❌ videos/video_001.mp4 -> videos/video_001.mp4 [Target file already exists]
Found 1 conflict
Continue with skipping conflicts? (y/n): n

Features

• ✅ Preview changes before applying
• ✅ Automatic conflict detection
• ✅ Asks for confirmation before renaming
• ✅ Backup file creation with timestamps
• ✅ Alphabetical sorting of source files
• ✅ Customizable numbering patterns

Development

Setup

Clone the repository and install in editable mode:

Using pip:

git clone https://github.com/signalsenryu/bulk-rename.git
cd bulk-rename
python -m venv .venv
source .venv/bin/activate  # On Windows: .venv\Scripts\activate
pip install -e ".[dev]"

Using uv:

git clone https://github.com/signalsenryu/bulk-rename.git
cd bulk-rename
uv venv
source .venv/bin/activate  # On Windows: .venv\Scripts\activate
uv pip install -e ".[dev]"

Or even simpler with uv sync:

git clone https://github.com/signalsenryu/bulk-rename.git
cd bulk-rename
uv sync --all-extras

Run Tests

Using pip:

pytest tests/ -vv -s

Using uv:

uv run pytest tests/ -vv -s

Project Structure

bulk-rename/
├── src/
│   └── bulk_rename/
│       ├── __init__.py
│       ├── __main__.py
│       └── cli.py
├── tests/
│   └── test_renamer.py
├── pyproject.toml
└── README.md

License

MIT License - see LICENSE file for details.