4,126 questions
1
vote
1
answer
49
views
Python script locked by thread
I would like this Python 3.10 script (where the pynput code is partially based on this answer) to enter the while loop and at the same time monitor the keys pressed on the keyboard. When q is pressed, ...
- 1,534
0
votes
1
answer
65
views
Thread leakage issues during code testing
When performing OCR on user-selected regions using PaddleOCR, certain regions fail to be detected. The issue occurs in a Streamlit-based application with the following implementation characteristics:
...
- 11
1
vote
1
answer
63
views
Is the Python ThreadPoolExecutor best used for synchronous database calls?
I need to connect to several different databases and then perform a number of queries on each one. I first tried to use asyncio until I realize that JDBC doesn't have async calls, and wrapping the ...
- 11
0
votes
0
answers
30
views
Why does tqdm mess up cProfile output?
When profiling some Python code, I've been frustrated by functions like threading.py:637(wait) appearing high in cProfile output instead of the hot functions I want to see. After some tests I realized ...
- 1,533
0
votes
0
answers
40
views
How to exit a Python Win32 GUI program on Ctrl-C from invoking console
I have a simple Python Win32 program that works well when run under pythonw from a command prompt. When I run it under python, it keeps running in the foreground of the command prompt and can e.g. ...
- 9,245
0
votes
0
answers
43
views
Unpredictable behaviour when reading from stdin in python daemon thread
The python documentation says of daemon threads:
A thread can be flagged as a “daemon thread”. The significance of this flag is that the entire Python program exits when only daemon threads are left.
...
- 406
0
votes
0
answers
37
views
Launch only one background task with multiple Gunicorn workers
I have a flask application that I run with Gunicorn.
The application itself would ideally be run with multiple workers. I also have some data I need to consume from Kafka, but that should only be one ...
- 293
0
votes
1
answer
64
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comparative analysis of multithreading and multiprocessing
i would like to compare to each other python's multithreading and multiprocessing, here is example of multithreading :
import numpy as np
import threading
import time
...
- 29
0
votes
0
answers
32
views
The set_result() of Future doesn't end the await after the loop of create_task()
I write a Python program involving a loop of create_task() that calls async functions. In each task, it waits for another thread to set the result for a Future object.
async def run(self) -> int:
...
- 87
0
votes
0
answers
15
views
Is there a way to interrupt speech in pyttsx3?
I've tried emptying the queue every time. I've tried self.engine.stop. It either doesn't affect anything or it will work and successfully interrupt the previous speech one, twice or maybe even thrice ...
- 56
0
votes
0
answers
17
views
PySimpleGUI - working of two windows at the same time [duplicate]
I have a project using the PySimpleGUI library. The application has many windows. The project is built as follows:
def window_nr_2():
layout2 = [[sg.Button ('But A'), sg.Button ('But B')]]
...
- 1
0
votes
1
answer
53
views
Background threads stoping
i have a python application, that contains functions to be called by interval.
def call_repeatedly(interval, func, *args, **kwargs):
stopped = threading.Event()
lock = threading.Lock() # Lock ...
0
votes
1
answer
59
views
How do I preserve and reconcile mutable object state across parallel tasks, when pickling breaks references in Python multiprocessing?
We're working on a concurrency problem where a single "Sample" object has multiple dependent tasks that must be executed in stages. For instance, stage 1 has tasks (1a, 1b), stage 2 has ...
- 132
0
votes
0
answers
133
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How to read data from Siemens S7-1500 PLC asynchronously using Python and snap7?
I am trying to read data from a Siemens S7-1500 PLC in an asynchronous way using Python and the snap7 library. My goal is to read multiple tags concurrently. However, I am encountering the error b'CLI ...
0
votes
1
answer
37
views
Stop thread flow (audio) by condition in Python
There are streams: music - plays music, run - asks to enter something. I want that if "r" is entered, the music stream is interrupted by this condition. I understand that the flag with the ...
