4,119 questions
Advice
0
votes
6
replies
104
views
Optimizing sys.stdout.write()
I am an amateur playing around with making simple games using Python and the Windows console through sys.stdout.write(). I am aware that this method of doing 'graphics' with printing ascii characters ...
0
votes
2
answers
87
views
threading.Thread cannot catch a PyCharm "stop" button termination event
I am using Pycharm. When I click the "stop" button, the subprocess.Popen deletes the left over .bat files. But after putting the subprocess.Popen inside a threading.Thread function, the .bat ...
- 5,408
4
votes
1
answer
146
views
Python tkinter not executing button commands on Raspberry Pi
I am developing an app to select and play a mp3 clip from a list. It will be run on a Pi4 with 7” touch display and piAMP+ hat. The GUI is in tkinter with pygame for the sound plus a pair of GPIO pins ...
- 51
3
votes
1
answer
311
views
Python 3.14 removes GIL. What possibilities of data races can happen in Python now? And how to handle them? [closed]
Are python references atomic under concurrent access? Are dictionaries and lists thread-safe?
- 113
-1
votes
1
answer
92
views
Closing QDialog internally
I am trying to start a Dialog including QListWidget. In this list every time a status is changed, the list should get a new line. At the end, if the backup process has finished, the dialog should ...
2
votes
1
answer
68
views
Cannot start a ThreadPoolExecutor inside a threading.Thread function
In this example, Tkinter GUI starts ThreadPoolExecutor. But ThreadPoolExecutor is inside a threading.Thread function. The thread function says it's finished
before ThreadPoolExecutor has started ... ...
- 5,408
0
votes
0
answers
51
views
OSX does not display the names of free-threaded python threads [duplicate]
I am running free-threaded python3.13t with PYTHON_GIL=0 on MacOS Sequoia 15.7.
I create threads like this:
thread = threading.Thread(target=lambda: time.sleep(10), name="test-thread")
...
- 14.7k
2
votes
1
answer
131
views
Threading or asyncio for serial communications?
I'm running some serial commands to test connected devices under test (DUTs), & we have a need to run these in parallel/concurrently to speed up our tests. I would like some feedback on which ...
- 189
-1
votes
2
answers
135
views
ThreadPoolExecutor is running the functions in sequence, not in parallel [duplicate]
We run a bunch of wireless controllers (mc's) and I want to use the controller API to transfer firmware via TFTP to each controller in preparation for an upgrade (the API call needs to be run on each ...
- 51
2
votes
1
answer
2k
views
import sentence_transformers hangs on macOS with [mutex.cc] RAW: Lock blocking error
I'm encountering a persistent issue where importing the sentence_transformers library on macOS causes my Python script to hang indefinitely. When the script hangs, the only output I see is a low-level ...
- 51
0
votes
1
answer
45
views
Socketio background task issues with pubsub subscription
I am running a gunicorn server with 1 eventlet worker through which I communicate with the FE via websockets.
However, I also need to listen to an external pod running some code that will emit a redis ...
0
votes
1
answer
95
views
How to cancel an await asyncio.StreamReader.readline() call?
I am using asyncio.StreamReader to continuously process line based communication like this:
reader, writer = await asyncio.open_connection(host, port)
while running:
line = await reader.readline()
...
- 155
-1
votes
3
answers
81
views
How to run a function while listening to a port
I am running a script that listens for webhook on my local machine using the following pattern :
from flask import Flask, request, abort
app = Flask(__name__)
@app.route("/", methods=["...
- 3
0
votes
2
answers
62
views
Python threads killed when main thread times out with only one thread, but survive when more than one threads are created
I have a Python function decorated with a 1-minute timeout. Inside it I spawn one or more worker threads that each run a 2-minute sleep via a dynamically executed script (using exec() in a custom ...
8
votes
2
answers
565
views
What happens to the asyncio event loop when multiple CPU-bound tasks run concurrently in a ThreadPoolExecutor given Python’s GIL?
I'm working on an asynchronous Python application (using FastAPI/Starlette/asyncio) that needs to offload synchronous, CPU-bound tasks to a thread pool (ThreadPoolExecutor) to avoid blocking the event ...
