import gc

gc.setup_debug_callback(print)

gc.collect()
def create_garbage():
    a = [(1,2) for i in range(20000)]
    return a

create_garbage()
gc.collect()

create_garbage()
create_garbage()
c = create_garbage()

assert gc.is_tracked(c) == True
gc.untrack(c)
assert gc.is_tracked(c) == False
gc.track(c)
assert gc.is_tracked(c) == True