def include(self, number):
    if self.__uninitialized:
        (self.lower, self.upper) = (number, number)
        self.__uninitialized = False
    if (number >= self.upper):
        self.__delta_added = True
        self.upper = (number + DELTA)
    elif (number < self.lower):
        self.lower = number
def include(self, number):
    if self.__uninitialized:
        (self.lower, self.upper) = (number, number)
        self.__uninitialized = False
    if (number >= self.upper):
        self.__delta_added = True
        self.upper = (number + DELTA)
    elif (number < self.lower):
        self.lower = number