File size: 3,288 Bytes
da93298 |
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 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 |
"""This a module for downloading games from database.lihess.org."""
import os
import io
import sys
import chess.pgn
import traceback
import zstandard
import requests
import datasets
_CITATION = """NOTTHING YET"""
_DESCRIPTION = """\
Lichess.org is a free/libre, open-source chess server powered by volunteers and donations and provides all of its content
in CC0. This script download all the games from the database and provide them in LLM pretraining friendly format.
"""
_HOMEPAGE = ""
_LICENSE = "Creative Commons Zero v1.0 Universal"
_URLS = {
"base_url": "https://database.lichess.org/standard/",
}
_FILE_TEMPLATE = "lichess_db_standard_rated_{}.pgn.zst"
_DOWNLOAD_LIST = "https://database.lichess.org/standard/list.txt"
def get_dates_configs():
# download download_list using requests:
r = requests.get(_DOWNLOAD_LIST)
files = r.text.split("\n")
# https://database.lichess.org/standard/lichess_db_standard_rated_2023-06.pgn.zst
# split every line to get the date
dates_configs = [f.split("_")[-1].split(".")[0] for f in files]
return dates_configs
class LichessGames(datasets.GeneratorBasedBuilder):
"""Lichess games"""
VERSION = datasets.Version("1.0.0")
configs = get_dates_configs()
BUILDER_CONFIGS = [
datasets.BuilderConfig(
name=d,
version=datasets.Version("1.0.0"),
description=f"Games of {d}",
)
for d in configs
]
DEFAULT_CONFIG_NAME = configs[0]
def _info(self):
features = datasets.Features(
{
"text": datasets.Value("string"),
}
)
return datasets.DatasetInfo(
description=_DESCRIPTION,
features=features,
homepage=_HOMEPAGE,
license=_LICENSE,
citation=_CITATION,
)
def _split_generators(self, dl_manager):
file_name = _FILE_TEMPLATE.format(self.config.name)
url = {self.config.name: _URLS["base_url"] + file_name}
data_dir = dl_manager.download(url)
return [
datasets.SplitGenerator(
name=datasets.Split.TRAIN,
# These kwargs will be passed to _generate_examples
gen_kwargs={
"filepath": data_dir[self.config.name],
"split": "train",
},
),
]
# method parameters are unpacked from `gen_kwargs` as given in `_split_generators`
def _generate_examples(self, filepath, split):
try:
with open(filepath, 'rb') as f:
dctx = zstandard.ZstdDecompressor()
stream_reader = dctx.stream_reader(f)
pgn = io.TextIOWrapper(stream_reader, encoding="utf-8")
k = 0
while True:
try:
game = chess.pgn.read_game(pgn)
except Exception as e:
print(e)
break
if game is None:
break
k += 1
yield f"{self.config.name}-{k}", {'text': str(game)}
except Exception as e:
traceback.print_exc(file=sys.stdout)
return
|