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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def extract_features(self, text):
 """Extracts features from a body of text. :rtype: dictionary of features """

        # Feature extractor may take one or two arguments
        try:
            return self.feature_extractor(text, self.train_set)
        except (TypeError, AttributeError):
            return self.feature_extractor(text)