def sumab(x,y): """ 把x+(x+1)+(x+2)+……+ (y-1) + y的和求出来(连加） :param x: 连加的第【1】个数 :param y: 连加的第【最后一】个数 :return: 连加的结果 """ tot = 0 for i in range(x,y+1): tot +=i return tot a = sumab(1,10) b = sumab(20,30) c = sumab(35,45) print(a) print(b) print(c)