The thing I cannot figure out is that although ThreadPoolExecutor uses daemon workers, they will still run even if main thread exit. I can provide a minimal example in python3.6.4: import concur...

I have a multithreaded function that I would like a status bar for using tqdm. Is there an easy way to show a status bar with ThreadPoolExecutor? It is the parallelization part that is confusing me...

Python's futures package allows us to enjoy ThreadPoolExecutor and ProcessPoolExecutor for doing tasks in parallel. However, for debugging it is sometimes useful to temporarily replace the true pa...

I want to use parallel to update global variable using module concurrent.futures in python It turned out that using ThreadPoolExecutor can update my global variable but the CPU did not use all the...

I use a ThreadPoolExecutor to quickly check a list of proxies to see which ones are dead or alive. with concurrent.futures.ThreadPoolExecutor(max_workers=5) as executor: futures = [] for proxy in...

I'm working with a Backend class which spawns a subprocess to perform the CPU-bound work. I have no control over that class and basically the only way of interaction is to create an instance backen...

I am using parallel processing using the concurrent.futures.ThreadPoolExecutor class to make multiple predictions using a Keras model for different sets of weights. But the Keras model predictions ...

Python concurrent.futures and ProcessPoolExecutor provide a neat interface to schedule and monitor tasks. Futures even provide a .cancel() method: cancel(): Attempt to cancel the call. If the ca...

When I run the below code: from concurrent.futures import ProcessPoolExecutor, as_completed from multiprocessing import Queue q = Queue() def my_task(x, queue): queue.put("Task Complete&quo...

I am using the new concurrent.futures module (which also has a Python 2 backport) to do some simple multithreaded I/O. I am having trouble understanding how to cleanly kill tasks started using this...

I have the following test code: import concurrent.futures import urllib.request URLS = ['http://www.foxnews.com/', 'http://www.cnn.com/', 'http://europe.wsj.com/', 'http://www.bbc.co.uk/', 'ht...

The only mechanism I can find for handling a keyboard interrupt is to poll. Without the while loop below, the signal processing never happens and the process hangs forever. Is there any graceful me...

I am playing around with concurrent.futures. Currently my future calls time.sleep(secs). It seems that Future.cancel() does less than I thought. If the future is already executing, then time.sle...

Is there a way to make the processes in concurrent.futures.ProcessPoolExecutor terminate if the parent process terminates for any reason? Some details: I'm using ProcessPoolExecutor in a job that p...

I want to make my class method runs parallel, but it only produces some kind of error that I can not solve. My code is: import concurrent.futures as futures samples = ['asfd', 'zxcv', 'asf', 'qwer...

I'm trying to split a process that takes a long time to multiple processes using concurrent.futures module. Attached is the code below Main function: with concurrent.futures.ProcessPoolExecutor() a...

I am running a piece of python code in which multiple threads are run through threadpool executor. Each thread is supposed to perform a task (fetch a webpage for example). What I want to be able to...

I am learning to set up the seed of NumPy ver 1.19 psuedo-random number generator for a Python 3.6 concurrent.futures.ProcessPoolExecutor analysis. After reading NumPy's documentation on Random sam...

I'm confused about parallel execution in python using selenium. There seems to be a few ways to go about it, but some seem out of date. There's a python module called python-wd-parallel which seem...

I'm creating a thread manager class that handles executing tasks as threads and passing the results to the next process step. The flow works properly upon the first execution of receiving a task, b...

the following code has 5 workers .... each opens its own worker_task() with concurrent.futures.ThreadPoolExecutor(max_workers=5) as executor: future_to_url = {executor.submit(worker_task, command_...

I have a gRPC server which uses ProcessPoolExecutor with max_workers=1 to run a script. Here is why i had to use a ProcessPoolExecutor inside run_brain_application with max_workers=1. Below is the ...

From https://docs.python.org/3/library/concurrent.futures.html#concurrent.futures.Executor.map If a func call raises an exception, then that exception will be raised when its value is retrieved fr...

I trying to implement the concurrent.futures have been having an issue, I generated a code that when executed in: Python Terminal Enters in some infinite loop in my last loop and do not finish t...

I have Python 3.8 and cannot upgrade (I have dependencies that only work with Python 3.8), so this SO post does not answer my question. How do I prevent the OSError: handle is closed error? This ha...