priorityqueue([maxsize]creates priority queue in which items are ordered from lowest to highest priority when working with this queueitems should be tuples of the form (prioritydatawhere priority is number an instance of any of the queue classes has the following methodsq qsize(returns the approximate size of the queue because other threads may be updating the queuethis number is not entirely reliable empty(returns true if the queue is empty and returns false otherwise full(returns true if the queue is full and returns false otherwise put(item [block [timeout]]puts item into the queue if optional argument block is true (the default)the caller blocks until free slot is available otherwise (block is false)the full exception is raised if the queue is full timeout supplies an optional timeout value in seconds if timeout occursthe full exception is raised put_nowait(itemequivalent to put(itemfalseq get([block [timeout]]removes and returns an item from the queue if optional argument block is true (the default)the caller blocks until an item is available otherwise (block is false)the empty exception is raised if the queue is empty timeout supplies an optional timeout value in seconds if timeout occursthe empty exception is raised get_nowait(equivalent to get( task_done(used by consumers of queued data to indicate that processing of an item has been finished if this is usedit should be called once for every item removed from the queue join(blocks until all items on the queue have been removed and processed this will only return once task_done(has been called for every item placed on the queue queue example with threads multithreaded programs are often simplified with the use of queues for exampleinstead of relying upon shared state that must be protected by locksthreads can be linked together using shared queues in this modelworker threads typically operate as consumers of data here is an example that illustrates the conceptf lib fl ff