app.py

###############
# Load datasets
###############
raw_datasets = get_datasets(data_args, splits=data_args.dataset_splits)
logger.info(
    f"Training on the following datasets and their proportions: {[split + ' : ' + str(dset.num_rows) for split, dset in raw_datasets.items()]}"
)

################
# Load tokenizer
################
tokenizer = get_tokenizer(model_args, data_args)

#####################
# Apply chat template
#####################
raw_datasets = raw_datasets.map(apply_chat_template, fn_kwargs={"tokenizer": tokenizer, "task": "sft"})
train_dataset = raw_datasets["train"]
eval_dataset = raw_datasets["test"]