multilingual it expects the sequences in a certain format: A special language id token is used as prefix in both the
source and target text. The source text format is [lang_code] X [eos], where lang_code is source language
id for source text and target language id for target text, with X being the source or target text.
The [M2M100Tokenizer] depends on sentencepiece so be sure to install it before running the
examples. To install sentencepiece run pip install sentencepiece.
Supervised Training
```python
from transformers import M2M100Config, M2M100ForConditionalGeneration, M2M100Tokenizer
model = M2M100ForConditionalGeneration.from_pretrained("facebook/m2m100_418M")
tokenizer = M2M100Tokenizer.from_pretrained("facebook/m2m100_418M", src_lang="en", tgt_lang="fr")
src_text = "Life is like a box of chocolates."
