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Running on Zero
| import sys | |
| import types | |
| # Guard against blocked _sqlite3 DLL on Windows systems with Application Control | |
| if 'sqlite3' not in sys.modules: | |
| sys.modules['sqlite3'] = types.ModuleType('sqlite3') | |
| if '_sqlite3' not in sys.modules: | |
| sys.modules['_sqlite3'] = types.ModuleType('_sqlite3') | |
| import re | |
| import string | |
| try: | |
| from nltk.stem.porter import PorterStemmer | |
| stemmer = PorterStemmer() | |
| except Exception: | |
| class DummyStemmer: | |
| def stem(self, w): return w | |
| stemmer = DummyStemmer() | |
| try: | |
| from nltk.corpus import stopwords | |
| except Exception: | |
| stopwords = None | |
| # Safe fallback stopwords | |
| FALLBACK_STOPWORDS = { | |
| 'i', 'me', 'my', 'myself', 'we', 'our', 'ours', 'ourselves', 'you', "you're", "you've", | |
| "you'll", "you'd", 'your', 'yours', 'yourself', 'yourselves', 'he', 'him', 'his', 'himself', | |
| 'she', "she's", 'her', 'hers', 'herself', 'it', "it's", 'its', 'itself', 'they', 'them', | |
| 'their', 'theirs', 'themselves', 'what', 'which', 'who', 'whom', 'this', 'that', "that'll", | |
| 'these', 'those', 'am', 'is', 'are', 'was', 'were', 'be', 'been', 'being', 'have', 'has', | |
| 'had', 'having', 'do', 'does', 'did', 'doing', 'a', 'an', 'the', 'and', 'but', 'if', 'or', | |
| 'because', 'as', 'until', 'while', 'of', 'at', 'by', 'for', 'with', 'about', 'against', | |
| 'between', 'into', 'through', 'during', 'before', 'after', 'above', 'below', 'to', 'from', | |
| 'up', 'down', 'in', 'out', 'on', 'off', 'over', 'under', 'again', 'further', 'then', 'once', | |
| 'here', 'there', 'when', 'where', 'why', 'how', 'all', 'any', 'both', 'each', 'few', 'more', | |
| 'most', 'other', 'some', 'such', 'no', 'nor', 'not', 'only', 'own', 'same', 'so', 'than', | |
| 'too', 'very', 's', 't', 'can', 'will', 'just', 'don', "don't", 'should', "should've", 'now', | |
| 'd', 'll', 'm', 'o', 're', 've', 'y', 'ain', 'aren', "aren't", 'couldn', "couldn't", 'didn', | |
| "didn't", 'doesn', "doesn't", 'hadn', "hadn't", 'hasn', "hasn't", 'haven', "haven't", 'isn', | |
| "isn't", 'ma', 'mightn', "mightn't", 'mustn', "mustn't", 'needn', "needn't", 'shan', "shan't", | |
| 'shouldn', "shouldn't", 'wasn', "wasn't", 'weren', "weren't", 'won', "won't", 'wouldn', "wouldn't" | |
| } | |
| # stemmer is initialized above with safe fallback | |
| try: | |
| stopword_set = set(stopwords.words('english')) | |
| except Exception: | |
| stopword_set = FALLBACK_STOPWORDS | |
| def deobfuscate(text): | |
| text = str(text).lower() | |
| text = text.replace('@', 'a').replace('4', 'a') | |
| text = text.replace('$', 's').replace('5', 's') | |
| text = text.replace('0', 'o') | |
| text = text.replace('1', 'i').replace('!', 'i') | |
| text = text.replace('3', 'e') | |
| return text | |
| def collapse_dups(text): | |
| # Condense consecutive characters: fuuuck -> fuck, madarchood -> madarchod | |
| return re.sub(r'(.)\1+', r'\1', text) | |
| def clean_text(text): | |
| """ | |
| Cleans the input text for Hate Speech Detection. | |
| - Converts to lowercase and normalizes Leetspeak (special characters) | |
| - Collapses elongated words (e.g. coooool -> col) | |
| - Removes URLs, HTML tags | |
| - Removes punctuation and special characters | |
| - Removes stopwords | |
| - Applies Stemming | |
| """ | |
| text = deobfuscate(text) | |
| text = collapse_dups(text) | |
| text = re.sub(r'https?://\S+|www\.\S+', '', text) | |
| text = re.sub(r'<.*?>+', '', text) | |
| text = re.sub(r'[%s]' % re.escape(string.punctuation), ' ', text) | |
| text = re.sub(r'\n', ' ', text) | |
| text = re.sub(r'\w*\d\w*', '', text) | |
| # Remove stopwords and stem | |
| words = [stemmer.stem(word) for word in text.split(' ') if word not in stopword_set and word != ''] | |
| return " ".join(words) | |