human
Complete the below
def classify_saves(saves, period_start):

    ''''For each (utc, id) in saves, yield (True, (utc, id)) if the save
    should be kept and (False, (utc, id)) if the save should be removed.
    The ids are binary hashes.'
    '''
 What is a the Python program you requested?
assistant
#Here is the Python program you requested.
    def retain_newest_in_region(region):
        for save in region[0:1]:
            (yield (True, save))
        for save in region[1:]:
            (yield (False, save))
    (matches, rest) = partition((lambda s: (s[0] >= period_start['all'])), saves)
    for save in matches:
        (yield (True, save))
    tm_ranges = ((period_start['dailies'], (lambda s: localtime(s[0]).tm_yday)), (period_start['monthlies'], (lambda s: localtime(s[0]).tm_mon)), (period_start['yearlies'], (lambda s: localtime(s[0]).tm_year)))
    for (pstart, time_region_id) in tm_ranges:
        (matches, rest) = partition((lambda s: (s[0] >= pstart)), rest)
        for (region_id, region_saves) in groupby(matches, time_region_id):
            for action in retain_newest_in_region(list(region_saves)):
                (yield action)
    for save in rest:
        (yield (False, save))