File size: 2,110 Bytes
91ac3cc | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 | from __future__ import annotations
import argparse
import json
from pathlib import Path
import numpy as np
from transformers import AutoTokenizer
from kawk50m.cli import configure_utf8_stdio
from scripts.tokenize_corpus import tokenize_split
def parse_args() -> argparse.Namespace:
parser = argparse.ArgumentParser(
description="Tokenize one clean JSONL shard into a uint16 token part."
)
parser.add_argument("--input", required=True)
parser.add_argument("--tokenizer-dir", required=True)
parser.add_argument("--output", required=True)
parser.add_argument("--batch-size", type=int, default=64)
return parser.parse_args()
def main() -> None:
configure_utf8_stdio()
args = parse_args()
input_path = Path(args.input)
output_path = Path(args.output)
metadata_path = output_path.with_suffix(".json")
if not input_path.is_file():
raise FileNotFoundError(input_path)
if output_path.exists() or metadata_path.exists():
raise FileExistsError(f"Refusing to overwrite token part: {output_path}")
if args.batch_size <= 0:
raise ValueError("--batch-size must be positive")
output_path.parent.mkdir(parents=True, exist_ok=True)
tokenizer = AutoTokenizer.from_pretrained(
args.tokenizer_dir, use_fast=False, legacy=True
)
tokenizer.model_max_length = int(1e30)
if len(tokenizer) > np.iinfo(np.uint16).max:
raise ValueError("uint16 output requires a vocabulary no larger than 65,535")
if tokenizer.eos_token_id is None:
raise ValueError("Tokenizer must define eos_token_id")
summary = tokenize_split(
split=input_path.stem,
paths=[input_path],
tokenizer=tokenizer,
output_path=output_path,
batch_size=args.batch_size,
max_tokens=None,
)
summary["input"] = str(input_path)
with metadata_path.open("w", encoding="utf-8") as handle:
json.dump(summary, handle, ensure_ascii=False, indent=2)
handle.write("\n")
print(json.dumps(summary, ensure_ascii=False))
if __name__ == "__main__":
main()
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