# Hugging Face Transformers v2.0.0 — Release & Upgrade Intelligence
- **Product:** Hugging Face Transformers (https://huggingface.co)
- **Version:** v2.0.0
- **Released:** Sep 26, 2019
- **Impact Score:** 7/10
- **Breaking Changes:** Source flagged
- **Canonical Analysis:** https://changelogs.us/transformers/updates/v2.0.0/

## Executive Summary (TL;DR)
Hugging Face Transformers v2.0.0. Source highlight: Name change: welcome 🤗 Transformers

## Breaking Changes & Deprecations
- Breaking changes ### Positional order of some model keywords inputs changed (better TorchScript support)
- If you used to call the models with keyword names for keyword arguments, e.g. `model(inputs_ids, attention_mask=attention_mask, token_type_ids=token_type_ids)`, this should not cause any breaking change.

## New Features
- resizing input embeddings to add new tokens

## Bug Fixes
- an example is given in the quick-tour on TF 2.0 and PyTorch in the readme in which a model is trained using keras.fit before being opened in PyTorch for quick debugging/inspection.
- new German model (@Timoeller)
- new script for MultipleChoice training (SWAG, RocStories...) (@erenup)
- better fp16 support (@ziliwang and @bryant1410)
- fix evaluation in run_lm_finetuning (@SKRohit)
- fiw LM finetuning to prevent crashing on assert len(tokens_b)>=1 (@searchivarius)

## Upgrade Command
```bash
python -m pip install 'transformers==2.0.0'
```