commavq.py

import datasets
from zipfile import ZipFile
import numpy as np

SHARD_SIZE = 2500
NUM_SHARDS = 40
_URLS = [
  f'https://huggingface.co/datasets/commaai/commavq/blob/main/data_{i*SHARD_SIZE}_to_{(i+1)*SHARD_SIZE}.zip' for i in range(NUM_SHARDS)
  ]

_DESCRIPTION = """\
TODO
"""

class CommaVQ(datasets.GeneratorBasedBuilder):
  def _info(self):

    return datasets.DatasetInfo(
      # This is the description that will appear on the datasets page.
      description=_DESCRIPTION,
    )

  def _split_generators(self, dl_manager):
    """Returns SplitGenerators."""
    downloaded_files = dl_manager.download_and_extract(_URLS)

    return [
      datasets.SplitGenerator(name=datasets.Split.TRAIN, gen_kwargs={"filepaths": x}) for x in downloaded_files
    ]

  def _generate_examples(self, filepaths):
    """Yields examples."""
    for filepath in filepaths:
      input_zip = ZipFile(filepath)
      for name in input_zip.namelist():
        yield name, {'tokens': input_zip.read(name)}