def iter_block_items(self):
        """
        Generate a reference to each of the block-level content elements in
        this cell, in the order they appear.
        """
        block_item_tags = (qn('w:p'), qn('w:tbl'), qn('w:sdt'))
        for child in self:
            if block_item_tags in child.tag:
                yield child
dataset/ETHPy150Open python-openxml/python-docx/docx/oxml/table.py/CT_Tc.iter_block_items/swapped operands of `in`