Tagged Questions
3
votes
3answers
47 views
Python: what are the differences between the threading and multiprocessing modules?
I am learning how to use the threading and the multiprocessing modules in Python to run certain operations in parallel and speed-up my code.
I am finding hard (maybe because I don't have any ...
1
vote
2answers
25 views
Detect Interpreter shut down in daemon thread
We were hit by this bug:
http://bugs.python.org/issue1856 Daemon threads segfault during interpreter shut down.
Now I search a way to code around this bug.
At the moment the code looks like this:
...
1
vote
1answer
30 views
How to request a new task when a process completes using the Python multiprocessing library?
Basically, I would like to have a pool to threads to perform some tasks for a given period of time. I figured that the multiprocessing library in Python would be perfect for me to do this. However, ...
0
votes
0answers
14 views
Safetkinter RuntimeError: Recursion Limit
So I've been trying to get a threadsafe adapter for tkinter (I'm using Python 3.3) to help with some of my projects. I stumbled upon a recipe called "safetkinter" (recipe 578153), which promises to ...
0
votes
0answers
21 views
python fastest way to spawn processes to updates rrds
I have a python scripts that needs to update tens of thousands of rrds every 5 minutes.
I wonder what is the fastest way to do that. Here are the options I have, and I wonder if you have any thoughts ...
0
votes
0answers
16 views
Threading with Hadoop Streaming
I am making use of Hadoop streaming to write a python based HTML grabber. I find that running a single threaded python script is slow. I want to modify it to a multithreaded version. Does anyone know ...
-2
votes
0answers
19 views
importing queue between modules [on hold]
I am trying to import a queue between different modules. Each module is a thread.
When printing the queue object from the different modules, the queue objects have different addresses.
Queue.Queue ...
1
vote
1answer
26 views
Threading and Queues in Python3: sentinel value in input_queue fails to break out of while loop
General Overview:
I am attempting to build a trivial example of an application that uses threads to scrape information from the web. I know there are dedicated modules for this (scrapy, for ...
1
vote
1answer
42 views
Break ongoing loop started by a tkinter button
I want to build a tkinter interface that can start doing some repetitive work when a "start" button is pressed, and break the ongoing loop when the "stop" button is pressed. However I noticed that the ...
0
votes
0answers
21 views
Stop/Kill Continuous Thread
I am attempting to continuously run a function that controls a stepper motor simultaneously while I plot incoming data. I can run the function but when I try to stop it with a keyboard interrupt the ...
1
vote
2answers
48 views
How to stop a looping thread in Python?
What's the proper way to tell a looping thread to stop looping?
I have a fairly simple program that pings a specified host in a separate threading.Thread class. In this class it sleeps 60 seconds, ...
0
votes
0answers
26 views
Django: memory usage grows on threads
I have a Django process which runs several threads. Some of them are always on and I notice that their memory usage grows indefinitely (more than 1GB in two hours).
I am on a Windows virtual machine ...
0
votes
0answers
52 views
Python sharing instance between two threads in two classes
I have some code that needs to be in a separate thread and this code is a different class completely. I am using the multiprocess.Queue queue to share the data. Basically I want the parent base class ...
1
vote
1answer
20 views
Handling SIGINT in parallel fabric task
I'm using a multiprocessing.Manager to keep track of resources that I create in a parallel fabric task. If something goes wrong I often want to do a ctrl-c to halt the tasks, however I still need ...
0
votes
1answer
44 views
How do I stop a Thread in Python (I have an endless loop)
The following code is supposed to be for a timer that counts down:
from org.csstudio.opibuilder.scriptUtil import PVUtil, ConsoleUtil, ColorFontUtil
from java.lang import Thread, Runnable
import ...
