Yields examples.

def _generate_examples(self, imgs_path, csv_path):
    """Yields examples."""
    with tf.io.gfile.GFile(csv_path) as csv_f:
      reader = csv.DictReader(csv_f)
      # Get keys for each label from csv
      label_keys = reader.fieldnames[5:]
      data = []
      for row in reader:
        # Get image based on indicated path in csv
        name = row["Path"]
        labels = [_LABELS[row[key]] for key in label_keys]
        data.append((name, labels))

    for name, labels in data:
      yield {
          "name": name,
          "image": os.path.join(imgs_path, name),
          "label": labels
      }