That's because you're using : from queue import * and then you're trying to use : queue.Queue(maxsize=0) remove the queue part, because from queue import * imports all the attributes to the current namespace. : Queue(maxsize=0) or use …

Oct 30, 2015 · The multiprocessing.Queue is a completely different class with a lot higher overhead; for threading, you want Queue from the queue(Py3)/Queue(Py2) module. requests is correctly trying to get it from both names (so it's version agnostic); the failure indicates a completely different problem (as the OP explains in their answer). –

Sep 22, 2017 · My import of Python modules. import Queue from threading import Thread import time But when I run code. File "b1.py", line 3, in <module> import Queue ModuleNotFoundError: No module named 'Queue' I have seen similar threads on SO,but nothings works for me

@Jonathan modify his code a little and I get the benchmark using cPython 3.6.2 and add condition in deque loop to simulate the behaviour Queue do. import time from queue import Queue import threading import collections mutex = threading.Lock() condition = threading.Condition(mutex) q = collections.deque() t0 = time.clock() for i in range(100000 ...

Aug 13, 2020 · queue is the name of the module, while Queue is a class name. You can tell so because conventionally, class names start with with a capital letter. The syntax for importing a specific class from a module is from MODULE import CLASS, so in your case, it should be from queue import Queue. From this you can use your queue : q = Queue().

Apr 17, 2015 · I am using python 3.6. import queue as Queue workQueue = Queue.Queue(10) This method works for me. Share.

Jun 28, 2012 · If I understand Python's queue API correctly, this is the only good way that I can empty the queue. That said, I hate Python's queue API! Sorry Pythonistas, its defective. There ought to be a nonblocking way that I can poll the queue for its first item and it returns None if it is empty instead of raising an Empty.

Python 3 version per @handle. import queue import threading # input queue to be processed by many threads q_in = queue.Queue(maxsize=0) # output queue to be processed by one thread q_out = queue.Queue(maxsize=0) # number of worker threads to complete the processing num_worker_threads = 10 # process that each worker thread will execute until the ...

Jul 17, 2012 · Short Summary. As of CY2023, the technique described in this answer is quite out of date. These days, use concurrent.futures.ProcessPoolExecutor() instead of multiprocessing, below...

Jun 6, 2020 · The python documentations specifies that the simple queue cannot use the functionality of tracking (task_done, join). These can be used to track that every item in the queue has been processed by another process/ thread. example code: