All Questions
Tagged with python-multithreading subprocess
84 questions
0
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1
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40
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Differing behaviors in Popen.readline() between IDE and terminal runs
I have a Tkinter GUI program that I would like to update a text Frame on with output from a called process. I managed to make it work pretty well using threading and subprocess, with the 'run' button ...
- 93
0
votes
1
answer
33
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Python - Kill an Active Subprocess Running in its Own Thread
I have a Python application that starts a subprocess that runs a bash script in another thread and in a separate shell. Note that this script starts a REST service and thus it does not terminate until ...
- 137
1
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0
answers
42
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Python subprocess stoud handling while other code is running
I want to build a python script that start a subprocess and launches a CLI command(the cli command can take hours to run), so I want the main python to continue, however deploy a watcher, that keeps ...
- 71
0
votes
1
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66
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Deadlock/hanging while reading from a subprocess's stderr in thread - with consideration of KeyboardInterrupt and SystemExit
I'm using Popen from Python's subprocess module to start a subprocess, and also running another thread to capture its standard error.
I suspect that the Popen context hangs on exit of the context if ...
- 27.1k
0
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1
answer
1k
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Run a Python subprocess in parallel
I'm writing a Python program to automate tasks. My program executes another program, let's call it "program 1", with the command subprocess:
subprocess.call(cmd, cwd=...
1
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1
answer
115
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Why code stop working after os.system command?
I have this code:
import os
import threading
def push_repository():
try:
os.system('git add *')
os.system('git commit -m "Automated commit"')
os.system('git push')
...
0
votes
1
answer
652
views
Why isn't subprocess.run working in a seperate thread?
I'm using subprocess.run() to run a .txt file containing python code. That python code may contain a while loop. I need the rest of my code to run while that is running. The obvious way to do this is ...
0
votes
3
answers
3k
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How to run 2 functions in parallel using python?
I have a job which calls start_measure function that runs a while loop to read a counter & store its value in a list as a separate process
Then I run a workload for some time in parallel
How can I ...
- 967
0
votes
2
answers
389
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Keep a class running in a python subprocess or thread or process
I am using Squish to automate a Qt-based GUI application. I look up qt objects in the application recursively. Since it's time-intensive, I would like to cache objects once found for later reuse. I ...
1
vote
3
answers
3k
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How to asynchronously call a shell script from Python?
I have a shell script which does some processing over the string passed and then writes it to a file. However I don't want my function foo() to wait for it to complete the operation. How do I call ...
- 13
0
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1
answer
140
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Python 3 interacting with subprocess via UDP on Raspberry Pi
I want to warm up raspistill via a subprocess call triggered via UDP and then at a desired time trigger image capture via a separate UDP command:
UDP_listener() as thread 1:
if data == "PRIME&...
0
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0
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303
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Make focus stacking work faster in Python
I am trying to run tufuse from python using subprocess.call to merge several layers of images and create one focus stack image. The input images are huge and take 20 min on my PC (12 cores, 64 G RAM) ...
3
votes
2
answers
1k
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Python: running many subprocesses from different threads is slow
I have a program with 1 process that starts a lot of threads.
Each thread might use subprocess.Popen to run some command.
I see that the time to run the command increases with the number of threads.
...
- 439
0
votes
0
answers
60
views
Read from Popen object's stdout while it's running
I'm trying to capture the stdout of a Popen object while it's running and display this data on a gui and log it. However whenever I try and read from the stdout attribute my program freezes. Minimal ...
- 205
0
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0
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354
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Python hangs with subprocess
I am having some issues figuring out why my code is hanging. I cannot reproduce it with a simple code, but I made a sample code on what/how the flow works. Basically the main process opens a ...
- 2,923