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4 changed files with 9 additions and 86 deletions

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@ -3,5 +3,4 @@ import re
LINK_RE = re.compile(r"(https?://[\w\-_.]+\.[a-z]{2,4}([^\s<'\"]*|$))") LINK_RE = re.compile(r"(https?://[\w\-_.]+\.[a-z]{2,4}([^\s<'\"]*|$))")
HTML_HREF_RE = re.compile(r"href=\"([^\"]+)\"") HTML_HREF_RE = re.compile(r"href=\"([^\"]+)\"")
WHITESPACE_RE = re.compile(r"\s+") WHITESPACE_RE = re.compile(r"\s+")
PUNCTUATION_RE = re.compile(r"[.,;:\"!?/()|*=>]+") PUNCTUATION_RE = re.compile(r"[.,;:\"!?/()|*=]+")
XML_ENTITY_RE = re.compile(r"&[a-z]+;")

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@ -6,7 +6,7 @@ from lxml import etree
from nltk.corpus import stopwords from nltk.corpus import stopwords
from nltk.stem import WordNetLemmatizer from nltk.stem import WordNetLemmatizer
from .regex import WHITESPACE_RE, PUNCTUATION_RE, LINK_RE, XML_ENTITY_RE from .regex import WHITESPACE_RE, PUNCTUATION_RE, LINK_RE
get_text = etree.XPath("//text()") get_text = etree.XPath("//text()")
@ -24,12 +24,11 @@ nltk.download("wordnet", quiet=True)
lemmatizer = WordNetLemmatizer() lemmatizer = WordNetLemmatizer()
def clean_multicore(texts, processes, chunk_size=10000, **kwargs): def clean_multicore(texts, processes, **kwargs):
pool = Pool(processes=processes) pool = Pool(processes=processes)
yield from pool.imap( return pool.map(
func=partial(preprocess, **kwargs), func=partial(preprocess, **kwargs),
iterable=texts, iterable=texts,
chunksize=chunk_size
) )
@ -45,7 +44,7 @@ def _transform_bigram(ngram_seq, ngrams):
def preprocess(text, lowercase=False, clean_html=False, strip=False, remove_punctuation=False, def preprocess(text, lowercase=False, clean_html=False, strip=False, remove_punctuation=False,
remove_stopwords_en=False, lemmatize=False, fix_single_quotes=False, strip_quotes=False, remove_stopwords_en=False, lemmatize=False, fix_single_quotes=False, strip_quotes=False,
remove_urls=False, bigrams: set = None, remove_numbers=False): remove_urls=False, bigrams: set = None):
if lowercase: if lowercase:
text = text.lower() text = text.lower()
@ -57,12 +56,8 @@ def preprocess(text, lowercase=False, clean_html=False, strip=False, remove_punc
if clean_html: if clean_html:
try: try:
text = "<root>" + text + "</root>" root = etree.fromstring(text.replace("&", ""))
text = "".join(get_text(root))
parser = etree.XMLParser(recover=True)
root = etree.fromstring(text, parser)
text = " ".join(get_text(root))
except: except:
pass pass
@ -80,14 +75,9 @@ def preprocess(text, lowercase=False, clean_html=False, strip=False, remove_punc
words.append("*") words.append("*")
text = " ".join(_transform_bigram(nltk.bigrams(words), bigrams)) text = " ".join(_transform_bigram(nltk.bigrams(words), bigrams))
if remove_stopwords_en or lemmatize or remove_numbers: if remove_stopwords_en or lemmatize:
words = text.split(" ") words = text.split(" ")
if remove_numbers:
words = filter(lambda w: not w.isnumeric(), words)
if not lemmatize and not remove_stopwords_en:
text = " ".join(words)
if lemmatize and remove_stopwords_en: if lemmatize and remove_stopwords_en:
text = " ".join(lemmatizer.lemmatize(w) for w in words if w not in stop_words_en) text = " ".join(lemmatizer.lemmatize(w) for w in words if w not in stop_words_en)
elif not lemmatize and remove_stopwords_en: elif not lemmatize and remove_stopwords_en:

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@ -2,7 +2,7 @@ from setuptools import setup
setup( setup(
name="hexlib", name="hexlib",
version="1.48", version="1.44",
description="Misc utility methods", description="Misc utility methods",
author="simon987", author="simon987",
author_email="me@simon987.net", author_email="me@simon987.net",

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@ -164,61 +164,6 @@ class TestText(TestCase):
self.assertEqual(cleaned, expected) self.assertEqual(cleaned, expected)
def test_html_no_root(self):
text = "<a href=\"#p217709510\" class=\"quotelink\">&gt;&gt;217709510</a><br>Is there a<wbr>servant that is against civilization and humanity?<br>Literally instant summon."
cleaned = preprocess(
text,
clean_html=True,
lowercase=True,
remove_punctuation=True,
strip=True,
lemmatize=False,
fix_single_quotes=True,
remove_stopwords_en=False,
remove_urls=False
)
expected = "217709510 is there a servant that is against civilization and humanity literally instant summon"
self.assertEqual(cleaned, expected)
def test_html_entity(self):
text = "doesn&#039;t"
cleaned = preprocess(
text,
clean_html=True,
lowercase=True,
remove_punctuation=True,
strip=True,
lemmatize=False,
fix_single_quotes=True,
remove_stopwords_en=False,
remove_urls=False
)
expected = "doesn't"
self.assertEqual(cleaned, expected)
def test_html_invalid_attribute(self):
text = '<root><iframe width="560" height="315" src=" " title="youtube video player" frameborder="0" allowfullscreen></iframe></root>'
cleaned = preprocess(
text,
clean_html=True,
lowercase=True,
remove_punctuation=True,
strip=True,
lemmatize=False,
fix_single_quotes=True,
remove_stopwords_en=False,
remove_urls=False
)
expected = ""
self.assertEqual(cleaned, expected)
def test_bigrams(self): def test_bigrams(self):
text = "x A b c d e f g h" text = "x A b c d e f g h"
cleaned = preprocess( cleaned = preprocess(
@ -233,14 +178,3 @@ class TestText(TestCase):
expected = "x a_b c_d e f_g h" expected = "x a_b c_d e f_g h"
self.assertEqual(cleaned, expected) self.assertEqual(cleaned, expected)
def test_remove_numbers(self):
text = "Hello1 test1124test 12 1 1111111 world"
cleaned = preprocess(
text,
lowercase=True,
remove_numbers=True
)
expected = "hello1 test1124test world"
self.assertEqual(cleaned, expected)