werx 0.1.1

A high-performance Python package for calculating Word Error Rate (WER), powered by Rust.

WERx

What is WERx?

WERx is a high-performance Python package for calculating the Word Error Rate (WER), backed by a Rust core. Designed for speed, safety, and production-grade robustness, it supports both corpus-level and sentence-level WER, as well as weighted variations and diagnostic summaries.

🚀 Why Use WERx?

• ⚡ Fast: Rust-powered core outperforms many pure Python implementations
• 🧪 Accurate: Deterministic and tested across thousands of examples
• 🔒 Safe: Handles edge cases gracefully (empty strings, mismatched lengths, etc.)
• 🔧 Flexible: Supports weighted insertions, deletions, substitutions
• 📊 Insightful: Sentence-level breakdowns and alignment diagnostics available

🧩 Installation

You can install WERx either with 'uv' or 'pip'.

Using 'uv' (recommended for modern workflows):

uv pip install werx

Using pip:

pip install werx

✨ Usage

Import the WERx package

Python Code:

import werx

Examples:

1. Single sentence comparison

Python Code:

wer = werx.wer('i love cold pizza', 'i love pizza')
print(wer)

Results Output:

0.25

2. Corpus level Word Error Rate Calculation

Python Code:

ref = ['i love cold pizza','the sugar bear character was popular']
hyp = ['i love pizza','the sugar bare character was popular']
wer = werx.wer(ref, hyp)
print(wer)

Results Output:

0.2

📄 License

This project is licensed under the Apache License 2.0.