def close_zips(self, starting_zip, radius):
        '''For any given zip code (assuming it's valid), returns any zip codes within a 'radius' mile radius.'''

        zip_long = self.zips[starting_zip].longitude
        zip_lat  = self.zips[starting_zip].latitude

        close_zips = [self.zips[record].zip for record in self.zips if self.get_distance(self.zips[record].zip, starting_zip) < radius]
        return close_zips
For any given zip code (assuming it's valid), returns any zip codes within a 'radius' mile radius.
recipes/Python/393241_Calculating_distance_between_zip/recipe-393241.py