from transformers import DefaultDataCollator
data_collator = DefaultDataCollator(return_tensors="tf")

Evaluate
Including a metric during training is often helpful for evaluating your model's performance. You can quickly load an
evaluation method with the 🤗 Evaluate library. For this task, load
the accuracy metric (see the 🤗 Evaluate quick tour to learn more about how to load and compute a metric):

import evaluate
accuracy = evaluate.load("accuracy")