Datasets:
Commit
•
ea2779f
1
Parent(s):
3595f8b
Support streaming (#3)
Browse files- Use iter_archive for TAR file (5877ce5051fbbf4f7e9a67f8b2445ab6bde9e0fb)
- the_pile_openwebtext2.py +30 -30
the_pile_openwebtext2.py
CHANGED
@@ -14,11 +14,8 @@
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# limitations under the License.
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"""The OpenWebText2 Corpus"""
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import glob
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import io
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import json
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import os
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import zstandard
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@@ -70,18 +67,22 @@ class Openwebtext2(datasets.GeneratorBasedBuilder):
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)
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def _split_generators(self, dl_manager):
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files = glob.glob(os.path.join(dl_dir, "*jsonl.zst"))
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return [
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datasets.SplitGenerator(
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]
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def _generate_examples(self, files):
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"""Yields examples."""
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_id = 0
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for
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reader = Reader()
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for document, metadata in reader.read_jsonl(
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yield _id, {
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"title": metadata["title"],
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"text": document,
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@@ -95,25 +96,24 @@ class Reader:
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def __init__(self):
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pass
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def read_jsonl(self,
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if
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yield text
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# limitations under the License.
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"""The OpenWebText2 Corpus"""
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import io
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import json
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import zstandard
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)
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def _split_generators(self, dl_manager):
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archive = dl_manager.download(_URL)
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return [
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datasets.SplitGenerator(
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name=datasets.Split.TRAIN,
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gen_kwargs={"files": dl_manager.iter_archive(archive)},
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),
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]
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def _generate_examples(self, files):
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"""Yields examples."""
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_id = 0
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for path, file in files:
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if not path.endswith(".jsonl.zst"):
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continue
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reader = Reader()
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for document, metadata in reader.read_jsonl(file, get_meta=True):
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yield _id, {
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"title": metadata["title"],
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"text": document,
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def __init__(self):
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pass
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def read_jsonl(self, fh, get_meta=False, autojoin_paragraphs=True, para_joiner="\n\n"):
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self.fh = fh
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cctx = zstandard.ZstdDecompressor()
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reader = io.BufferedReader(cctx.stream_reader(fh))
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for line in reader:
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ob = json.loads(line)
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# naive jsonl where each object is just the string itself, with no meta. For legacy compatibility.
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if isinstance(ob, str):
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assert not get_meta
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yield ob
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continue
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text = ob["text"]
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if autojoin_paragraphs and isinstance(text, list):
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text = para_joiner.join(text)
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if get_meta:
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yield text, (ob["meta"] if "meta" in ob else {})
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else:
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yield text
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