html-transpose 0.0.4

Python wrapper for html_transpose - a Rust library for transposing HTML tables

html_transpose

Python wrapper for html_transpose - a Rust library for transposing HTML tables while preserving merged cells, attributes, and structure.

Features

• ✅ Table Transposition: Swaps rows and columns of HTML tables
• ✅ Merged Cell Support: Correctly handles rowspan and colspan attributes
• ✅ Attribute Preservation: Maintains all attributes on both table and cell elements
• ✅ HTML Escaping: Properly escapes HTML special characters
• ✅ Error Handling: Returns descriptive errors for invalid input
• ✅ High Performance: Built with Rust for speed

Installation

Using uv

uv pip install html_transpose

Using pip

pip install html_transpose

From source

# Clone the repository
git clone https://github.com/snurf198/html_transpose_py.git
cd html_transpose_py

# Install using uv
uv pip install -e .

# Or using pip
pip install -e .

Usage

import html_transpose

# Simple table transpose
html_table = """
<table>
  <tr><td>A</td><td>B</td></tr>
  <tr><td>C</td><td>D</td></tr>
</table>
"""

transposed = html_transpose.transpose(html_table)
print(transposed)
# Output:
# <table>
#   <tr><td>A</td><td>C</td></tr>
#   <tr><td>B</td><td>D</td></tr>
# </table>

Handling Merged Cells

The library correctly handles tables with rowspan and colspan:

html_table = """
<table>
  <tr>
    <td rowspan="2">A</td>
    <td>B</td>
  </tr>
  <tr>
    <td>C</td>
  </tr>
</table>
"""

transposed = html_transpose.transpose(html_table)
# The rowspan becomes colspan in the transposed table

Error Handling

import html_transpose

try:
    result = html_transpose.transpose("<div>Not a table</div>")
except ValueError as e:
    print(f"Error: {e}")

API Reference

transpose(html: str) -> str

Transposes an HTML table string.

Parameters:

• html (str): A string containing an HTML table (must contain a <table> element)

Returns:

• str: The transposed HTML table as a string

Raises:

• ValueError: If no <table> element is found in the input or if the HTML parser fails

Requirements

• Python 3.8+
• Rust (for building from source)

Development

Setting up the development environment

# Install uv if not already installed
curl -LsSf https://astral.sh/uv/install.sh | sh

# Install dependencies
uv pip install -e ".[dev]"

# Or using pip
pip install -e ".[dev]"

Building

This package uses maturin to build the Rust extension:

# Install maturin
pip install maturin

# Build in development mode
maturin develop

# Build for distribution
maturin build

Running tests

# Using pytest
pytest

# Or using Python unittest
python -m unittest discover

License

This project is available under the MIT License.

Credits

• Original Rust library: html_transpose
• Built with PyO3 and maturin

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.