def cell(self, coordinate = None, row = None, column = None):
        """Returns a cell object based on the given coordinates.

        Usage: cell(coodinate='A15') **or** cell(row=15, column=1)

        If `coordinates` are not given, then row *and* column must be given.

        Cells are kept in a dictionary which is empty at the worksheet
        creation.  Calling `cell` creates the cell in memory when they
        are first accessed, to reduce memory usage.

        :param coordinate: coordinates of the cell (e.g. 'B12')
        :type coordinate: string

        :param row: row index of the cell (e.g. 4)
        :type row: int

        :param column: column index of the cell (e.g. 3)
        :type column: int

        :raise: InsufficientCoordinatesException when coordinate or (row and column) are not given

        :rtype: :class:`openpyxl.cell.Cell`

        """
        if not coordinate:
            if  (row is None or column is None):
                msg = "You have to provide a value either for " \
                        "'coordinate' or for 'row' *and* 'column'"
                raise InsufficientCoordinatesException(msg)
            else:
                coordinate = (get_column_letter(column + 1), row + 1) % '%s%s'
        else:
            coordinate = coordinate.replace('$', '')

        return self._get_cell(coordinate)
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/tablib-0.10.0/tablib/packages/openpyxl/worksheet.py/Worksheet.cell/swapped operands of `%`