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<!---
Copyright 2020 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
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Setup transformers following instructions in README.md, (I would fork first).
```bash
git clone git@github.com:huggingface/transformers.git
cd transformers
pip install -e .
pip install pandas GitPython wget
```
Get required metadata
```
curl https://cdn-datasets.huggingface.co/language_codes/language-codes-3b2.csv > language-codes-3b2.csv
curl https://cdn-datasets.huggingface.co/language_codes/iso-639-3.csv > iso-639-3.csv
```
Install Tatoeba-Challenge repo inside transformers
```bash
git clone git@github.com:Helsinki-NLP/Tatoeba-Challenge.git
```
To convert a few models, call the conversion script from command line:
```bash
python src/transformers/models/marian/convert_marian_tatoeba_to_pytorch.py --models heb-eng eng-heb --save_dir converted
```
To convert lots of models you can pass your list of Tatoeba model names to `resolver.convert_models` in a python client or script.
```python
from transformers.convert_marian_tatoeba_to_pytorch import TatoebaConverter
resolver = TatoebaConverter(save_dir='converted')
resolver.convert_models(['heb-eng', 'eng-heb'])
```
### Upload converted models
Since version v3.5.0, the model sharing workflow is switched to git-based system . Refer to [model sharing doc](https://huggingface.co/transformers/master/model_sharing.html#model-sharing-and-uploading) for more details.
To upload all converted models,
1. Install [git-lfs](https://git-lfs.github.com/).
2. Login to `transformers-cli`
```bash
transformers-cli login
```
3. Run the `upload_models` script
```bash
./scripts/tatoeba/upload_models.sh
```
### Modifications
- To change naming logic, change the code near `os.rename`. The model card creation code may also need to change.
- To change model card content, you must modify `TatoebaCodeResolver.write_model_card`

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