'Returns a cell location relative to this cell.
:param row: number of rows to offset
:type row: int
:param column: number of columns to offset
:type column: int
:rtype: :class:`openpyxl.cell.Cell`'

def offset(self, row=0, column=0):

    offset_column = (self.col_idx + column)
    offset_row = (self.row + row)
    return self.parent.cell(column=offset_column, row=offset_row)
