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Retain only the latest entries of an iterable in a bounded ring buffer and return them in chronological order. Test overflow, repeated values and capacity one, rejecting non-positive or fractional capacities before consuming input.
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from collections import deque
def keep_latest(items, capacity):
if type(capacity) is not int or capacity < 1:
raise ValueError("ring.capacity")
return tuple(deque(items, maxlen=capacity))The example is a starting point for a real project, not a claim that generated code is already tested. Adjust paths, dependencies and expected behavior to match your application.