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""" |
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Preprocessing |
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.................................................................................................... |
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MIT License |
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Copyright (c) 2021-2023 AUT Iran, Mohammad H Forouhesh |
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Copyright (c) 2021-2022 MetoData.ai, Mohammad H Forouhesh |
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.................................................................................................... |
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This module contains various tools for text preprocessing. |
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""" |
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import re |
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def remove_emoji(text: str) -> str: |
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""" |
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A function to remove emojis using regex |
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:param text: An input text. |
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:return: A text with removed emojis |
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""" |
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emoji_pattern = re.compile(pattern="[" |
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u"\U0001F600-\U0001F64F" # emoticons |
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u"\U0001F300-\U0001F5FF" # symbols & pictographs |
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u"\U0001F680-\U0001F6FF" # transport & map symbols |
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u"\U0001F1E0-\U0001F1FF" # flags (iOS) |
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u"\U00002702-\U000027B0" |
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u"\U000024C2-\U0001F251" |
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u"\U0001F300-\U0001F5FF" |
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u"\U0001F1E6-\U0001F1FF" |
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u"\U00002700-\U000027BF" |
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u"\U0001F900-\U0001F9FF" |
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u"\U0001F600-\U0001F64F" |
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u"\U0001F680-\U0001F6FF" |
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u"\U00002600-\U000026FF" |
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u'\u200d' |
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u'’' |
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u'£' |
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u'\u2060-\u2069' |
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u'í' |
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u'ó' |
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u'ú' |
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u'á' |
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u'–' |
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u'“”‘‘‘' |
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u'éàééàéééàéè' |
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u'üöççəəəəçä' |
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u'ışşƏıışşƏışêêñ' |
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u'İğğ~•' |
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u'⏯' |
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"]+", flags=re.UNICODE) |
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try: return str(emoji_pattern.sub(r'', text)) |
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except: return '' |
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def remove_redundant_characters(text: str) -> str: |
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""" |
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A tool to remove redundant and unwanted characters |
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:param text: An input text. |
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:return: A text with removed unwanted characters (punctuations, latin, etc.) |
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""" |
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text = text.replace('\u200c', ' ') |
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text = re.sub(r'@[A-Za-z0-9]+', ' ', text) # Removed @mentions |
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text = re.sub(r'_[A-Za-z0-9]+', ' ', text) # Removed underlines |
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text = re.sub(r'/(\r\n)+|\r+|\n+|\t+/', ' ', text) # Removed \n |
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text = re.sub(r'#', ' ', text) # Removing the '#' symbol |
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text = re.sub(r'RT[\s]+', ' ', text) # Removing RT |
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text = re.sub(r'https?:\/\/\S+', ' ', text) # Remove the hyper link |
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text = re.sub(r'\([ا-ی]{1,3}\)', ' ', text) # Remove abbreviations |
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text = re.sub(r"[\(\)]", " ", text) # remove parantesis |
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text = re.sub(r"\d|[۰-۹]", " ", text) |
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text = re.sub(r"&|:", " ", text) |
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text = re.sub(r"[A-Za-z]", " ", text) |
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text = re.sub(r"[0-9]", " ", text) |
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text = re.sub(r"\"", " ", text) |
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text = re.sub(r"\'", " ", text) |
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text = re.sub(r"_", " ", text) |
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text = re.sub(r"—", " ", text) |
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text = re.sub(r"-", " ", text) |
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text = re.sub(r"@|=", " ", text) |
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text = re.sub(r"^\d+\s|\s\d+\s|\s\d+$", " ", text) |
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text = re.sub(r"{|}|;|\[|\]|\||؟|!|\+|\-|\*|\$", " ", text) |
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text = re.sub(r"¹²|\/", " ", text) |
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text = re.sub(r"»|>|<|«|,|؛|،|%|؟", " ", text) |
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text = re.sub("\.|\^|,", " ", text) |
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text = text.replace('…', ' ') |
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text = text.replace('?', ' ') |
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# text = ' '.join(list(map(lambda word: '' if len(word) < 3 else word, text.split()))) |
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return ' '.join([word for word in text.split(' ') if len(word) > 1 |
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and False not in [char in 'آ ا ب پ ت ث ج چ ح خ د ذ ر ز ژ س ش ص ض ط ظ ع غ ف ق ک گ ل م ن و ه ی' |
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for char in word] |
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and len(text.split(' ')) > 1]) |
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MohammadForouhesh /
tracking-policy-agendas
