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Nr* r' r r r �emptya s z Queue.emptyc C sH | j �. d| j k o | �� kn W d � S 1 s:0 Y dS )aO Return True if the queue is full, False otherwise (not reliable!).
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� W d � n1 s�0 Y dS )a Put an item into the queue.
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z Queue.getc C s | j |dd�S )z�Put an item into the queue without blocking.
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