I have an inter-process queue that is usually empty and only once in a while does something appear in it. In one of my threads I want to define a while loop ...
The following are 30 code examples for showing how to use queue.Empty().These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example.
A typical pattern for entries is a tuple in the form: (priority_number, data) . exception queue. Empty ¶. Exception raised when non-blocking get() (or ...
2 dager siden · Exception raised when non-blocking get () (or get_nowait ()) is called on a Queue object which is empty. exception queue. Full ¶ Exception raised when non-blocking put () (or put_nowait ()) is called on a Queue object which is full. Queue Objects ¶ Queue objects ( Queue, LifoQueue, or PriorityQueue ) provide the public methods described below.
27.06.2012 · One argument is that Method 1 is wrong because the queue being empty is not an error, and therefore should not be handled using Queue.Empty exception An exception is not necessarily an "error", it's a general flow control mechanism, and is indeed used that way in a few cases (SysExit, StopIteration etc).
The following are 30 code examples for showing how to use Queue.Empty().These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example.
Method 2 is wrong because you are doing an operation in two steps when it could be done in one. In method 2, you check if the queue is empty, and then later ...
a call to get resulting in an empty exception of course does not mean that the queue is forevermore empty, only that the queue is empty at the moment the call to get was made -- the facility for trapping the empty and trying again to get more data off the queue provides welcome flexibility on top of the use of blocking/non-blocking calls …
27.06.2011 · The Queue.Empty exception is in the Queue module, not in the multiprocessing.queues.Queue class. The multiprocessing module actually uses the Queue ... Python multiprocessing : imported functions not ending. 2. TypeError: 'int' object is not callable while running multi processing. 1.
The following are 30 code examples for showing how to use Queue.Empty().These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example.
27.09.2016 · Python--Getting Queue.Empty exception from a nonempty multiprocessing.Queue. 2046. Why is reading lines from stdin much slower in C++ than Python? 12. Python multiprocessing Queues reliability, Queue vs SimpleQueue vs JoinableQueue. 2580. Why is "1000000000000000 in range(1000000000000001)" so fast in Python 3? 34.
a call to get resulting in an empty exception of course does not mean that the queue is forevermore empty, only that the queue is empty at the moment the call to get was made -- the facility for trapping the empty and trying again to get more data off the queue provides welcome flexibility on top of the use of blocking/non-blocking calls …
Queue.Empty Exception is raised when non-blocking get() (or get_nowait()) is called on a Queue object which is empty. Here is a simple python example that ...
11.03.2021 · You can’t remove more elements once the queue is empty. Doing so results in an exception. queue.pop (0) IndexError: pop from empty list Method 2 − Implement using queue.Queue This is the way to implement queue using inbuilt module from python. We need to import Queue from queue. We can initialize queue with some specific size.
Empty: continue try: self.show_yuv_frame(window_name, yuv_frame) except Exception: # We have to continue popping frame from the queue even if # we fail to ...
Constructor for an unbounded FIFO queue. Simple queues lack advanced functionality such as task tracking. New in version 3.7. exception queue. Empty ...
Queue.task_done lets workers say when a task is done. Someone waiting for all the work to be done with Queue.join will wait until enough task_done calls have been made, not when the queue is empty. eigenfield points out in the comments that it seems really weird for a queue to have task_done / join methods. That's true, but it's really a naming ...
The empty() method of queue class returns False if a queue instance holds one or more elements. It returns True otherwise. Since queue is synchronised and ...
Jun 28, 2012 · One argument is that Method 1 is wrong because the queue being empty is not an error, and therefore should not be handled using Queue.Empty exception An exception is not necessarily an "error", it's a general flow control mechanism, and is indeed used that way in a few cases (SysExit, StopIteration etc).
The following are 30 code examples for showing how to use queue.Empty().These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example.
27.12.2013 · In the python documentation, it says. exception Queue.Empty Exception raised when non-blocking get() (or get_nowait()) is called on a Queue object which is empty. So I wonder whether the following coding will ever raise the Queue.Empty exception because the way it use 'get' method seems non-blocking. Here is the code.