The Transformers library is Hugging Face's flagship Python package — it provides a unified API for loading, fine-tuning, and running thousands of pre-trained models.

Installation

pip install transformers torch

The 3-Line Power of Transformers

from transformers import pipeline

classifier = pipeline("sentiment-analysis")
result = classifier("I love this product!")
# [{'label': 'POSITIVE', 'score': 0.9998}]

Key Features

• Supports PyTorch, TensorFlow, and JAX backends
• Consistent API across hundreds of model architectures
• Automatic model downloading and caching
• Production-ready with batching, device management, and optimization

Reference:

Transformers documentation

https://huggingface.co/docs/transformers