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75 lines
2.3 KiB
Python
75 lines
2.3 KiB
Python
from __future__ import print_function, unicode_literals, division
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import io
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import bz2
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import logging
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from toolz import partition
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from os import path
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import re
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import spacy.en
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from spacy.tokens import Doc
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from joblib import Parallel, delayed
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import plac
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import ujson
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def parallelize(func, iterator, n_jobs, extra, backend='multiprocessing'):
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extra = tuple(extra)
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return Parallel(n_jobs=n_jobs, backend=backend)(delayed(func)(*(item + extra))
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for item in iterator)
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def iter_comments(loc):
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with bz2.BZ2File(loc) as file_:
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for i, line in enumerate(file_):
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yield ujson.loads(line)['body']
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pre_format_re = re.compile(r'^[\`\*\~]')
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post_format_re = re.compile(r'[\`\*\~]$')
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url_re = re.compile(r'\[([^]]+)\]\(%%URL\)')
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link_re = re.compile(r'\[([^]]+)\]\(https?://[^\)]+\)')
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def strip_meta(text):
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text = link_re.sub(r'\1', text)
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text = text.replace('>', '>').replace('<', '<')
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text = pre_format_re.sub('', text)
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text = post_format_re.sub('', text)
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return text.strip()
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def save_parses(batch_id, input_, out_dir, n_threads, batch_size):
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out_loc = path.join(out_dir, '%d.bin' % batch_id)
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if path.exists(out_loc):
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return None
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print('Batch', batch_id)
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nlp = spacy.en.English()
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nlp.matcher = None
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with open(out_loc, 'wb') as file_:
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texts = (strip_meta(text) for text in input_)
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texts = (text for text in texts if text.strip())
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for doc in nlp.pipe(texts, batch_size=batch_size, n_threads=n_threads):
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file_.write(doc.to_bytes())
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@plac.annotations(
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in_loc=("Location of input file"),
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out_dir=("Location of input file"),
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n_process=("Number of processes", "option", "p", int),
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n_thread=("Number of threads per process", "option", "t", int),
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batch_size=("Number of texts to accumulate in a buffer", "option", "b", int)
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)
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def main(in_loc, out_dir, n_process=1, n_thread=4, batch_size=100):
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if not path.exists(out_dir):
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path.join(out_dir)
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if n_process >= 2:
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texts = partition(200000, iter_comments(in_loc))
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parallelize(save_parses, enumerate(texts), n_process, [out_dir, n_thread, batch_size],
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backend='multiprocessing')
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else:
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save_parses(0, iter_comments(in_loc), out_dir, n_thread, batch_size)
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if __name__ == '__main__':
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plac.call(main)
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