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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 _handle_token(self, token):
 """Handle a single token."""

        try:
            return _HANDLERS[type(token)](self, token)
        except KeyError:
            err = "_handle_token() got unexpected {0}"
            raise ParserError(err.format(type(token).__name__))