Python Class Static Variable and Method

class SheetCol:    INDEX = 'A'    SYMBOL = 'B'    PRICE = 'C'    QUANTITY = 'D'    @staticmethod    def to_index0(char):        return ord(char) - 65

indexCol = SheetCol.to_index0(SheetCol.INDEX)   # A=0symbolCol = SheetCol.to_index0(SheetCol.SYMBOL) # B=1