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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 counter_from_str(self, string):
 """Build word frequency list from incoming string."""

        string_list = [chars for chars in string if chars not in self.punctuation]
        string_joined = ''.join(string_list)
        tokens = self.punkt.word_tokenize(string_joined)
        return Counter(tokens)