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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 process_dict(self, d, level, comments):
 """ Process keys and values within a block """

        lines = []

        for k, v in d.items():
            if not self.__is_metadata(k):
                qk = self.quoter.add_quotes(k)
                qv = self.quoter.add_quotes(v)
                line = self.__format_line(self.whitespace(level, 2), qk, qv)
                line += self.process_attribute_comment(comments, k)
                lines.append(line)

        return lines