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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def __normalize(self):
 """ Adjusts the values of the filters to be correct. For example, if you set grade 'B' to True, then 'All' should be set to False """


        # Don't normalize if we're already normalizing or intializing
        if self.__normalizing is True or self.__initialized is False:
            return

        self.__normalizing = True
        self.__normalize_grades()
        self.__normalize_progress()
        self.__normalizing = False