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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 filter(self, **kwargs):
 """ Returns a list of objects from the database. The kwargs parameter can contain any number of attributes. Only objects which contain all listed attributes and in which all values match for all listed attributes will be returned. """

        from sqlalchemy import or_

        Statement = self.get_model('statement')
        Tag = self.get_model('tag')

        session = self.Session()

        page_size = kwargs.pop('page_size', 1000)
        order_by = kwargs.pop('order_by', None)
        tags = kwargs.pop('tags', [])
        exclude_text = kwargs.pop('exclude_text', None)
        exclude_text_words = kwargs.pop('exclude_text_words', [])
        persona_not_startswith = kwargs.pop('persona_not_startswith', None)
        search_text_contains = kwargs.pop('search_text_contains', None)

        # Convert a single sting into a list if only one tag is provided
        if type(tags) == str:
            tags = [tags]

        if len(kwargs) == 0:
            statements = session.query(Statement).filter()
        else:
            statements = session.query(Statement).filter_by(**kwargs)

        if tags:
            statements = statements.join(Statement.tags).filter(
                Tag.name.in_(tags)
            )

        if exclude_text:
            statements = statements.filter(
                ~Statement.text.in_(exclude_text)
            )

        if exclude_text_words:
            or_word_query = [
                Statement.text.ilike('%' + word + '%') for word in exclude_text_words
            ]
            statements = statements.filter(
                ~or_(*or_word_query)
            )

        if persona_not_startswith:
            statements = statements.filter(
                ~Statement.persona.startswith('bot:')
            )

        if search_text_contains:
            or_query = [
                Statement.search_text.contains(word) for word in search_text_contains.split(' ')
            ]
            statements = statements.filter(
                or_(*or_query)
            )

        if order_by:

            if 'created_at' in order_by:
                index = order_by.index('created_at')
                order_by[index] = Statement.created_at.asc()

            statements = statements.order_by(*order_by)

        total_statements = statements.count()

        for start_index in range(0, total_statements, page_size):
            for statement in statements.slice(start_index, start_index + page_size):
                yield self.model_to_object(statement)

        session.close()