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New preprocessor - remove punctuation #2121

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New preprocessor - remove punctuation #2121

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15 changes: 15 additions & 0 deletions chatterbot/preprocessors.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,21 @@
Statement pre-processors.
"""

from nltk import RegexpTokenizer


def remove_punctuation(statement):
"""
Remove any punctuation from the statement text
"""
# Make tokenizer
tokenizer = RegexpTokenizer(r"\w+")

#make a list of words without punctuation
statement.text = " ".join(tokenizer.tokenize(statement.text))

return statement


def clean_whitespace(statement):
"""
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