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12 lines
403 B
12 lines
403 B
import queue
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class DroppingQueue(queue.Queue):
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"""自定义队列，满时自动丢弃最旧的数据"""
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def put(self, item, block=False, timeout=None):
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try:
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return super().put(item, block=block, timeout=timeout)
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except queue.Full:
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# 队列满时丢弃最旧的一个数据
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self.get_nowait()
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return super().put(item, block=False)
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