473,805 Members | 2,278 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

Traceback of hanged process


Hello,

please, how do I create a pythonic traceback from a python process that
hangs and is not running in an interpreter that I executed manually
or it is but doesn't react on CTRL-C etc? I'm trying to debug a server
implemented in Python, so I need some analog of 'gdb attach' for C.

Unfortunatelly, googling and reading documentation revealed nothing, so
please excuse if this question is dumb.

Thank you,
Hynek Hanke
Jan 6 '07 #1
3 1301
On 6 ene, 19:45, Hynek Hanke <h...@brailcom. orgwrote:
please, how do I create a pythonic traceback from a python process that
hangs and is not running in an interpreter that I executed manually
or it is but doesn't react on CTRL-C etc? I'm trying to debug a server
implemented in Python, so I need some analog of 'gdb attach' for C.
On Windows, Pythonwin has an option "Break into running code".
Try starting the script with python -i, and send it a signal..

--
Gabriel Genellina

Jan 7 '07 #2
Hynek Hanke wrote:
Hello,

please, how do I create a pythonic traceback from a python process that
hangs and is not running in an interpreter that I executed manually
or it is but doesn't react on CTRL-C etc? I'm trying to debug a server
implemented in Python, so I need some analog of 'gdb attach' for C.

Unfortunatelly, googling and reading documentation revealed nothing, so
please excuse if this question is dumb.
In python2.5, you can run a background thread that listens on a port or
unix socket, and prints a formatted version of sys._current_fr ames() to
stderr.

-Mike

Jan 8 '07 #3
Klaas wrote:
Hynek Hanke wrote:
>Hello,

please, how do I create a pythonic traceback from a python process that
hangs and is not running in an interpreter that I executed manually
or it is but doesn't react on CTRL-C etc? I'm trying to debug a server
implemented in Python, so I need some analog of 'gdb attach' for C.
....
In python2.5, you can run a background thread that listens on a port or
unix socket, and prints a formatted version of sys._current_fr ames() to
stderr.
You can also use the signal module to similar effect. Works well in
Twisted, at least:

http://blog.vrplumber.com/835

HTH,
Mike

--
_______________ _______________ _______________ ___
Mike C. Fletcher
Designer, VR Plumber, Coder
http://www.vrplumber.com
http://blog.vrplumber.com

Jan 8 '07 #4

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

1
2052
by: Oliver Walczak | last post by:
This seems to be a quite difficult approach. Try this: ##################################################################### import traceback class MyTraceback: def __init__(self): self.clear() def clear(self): self.s = '' def write(self, s):
7
2237
by: Robin Becker | last post by:
def raise_an_error(): a = 3 b = 4 c = 0 try: a = a/c except: import sys, cgitb, traceback, inspect tbt,tbv,tb = sys.exc_info() print 'traceback\n',''.join(traceback.format_exception(tbt,tbv,tb))
1
2276
by: Josh Close | last post by:
When sys.excepthook is called, type, value and traceback are passed into it. How do I get the values of traceback? I've tried printing it, but I get the memory location. I'm gussing there are some methods to use on it. >From what I can tell the traceback that's passed in works differently from the module traceback. I just need to get the traceback to log it. I can use type and value,
1
2562
by: Thomas Guettler | last post by:
Hi, the line numbers of inspect.getinnerframes are different from traceback.format_exception. This results in wrong lines being shown in cgitb. An example is below. I looked at the source of both methods. One uses f_lineno (wrong)
0
1019
by: tryers | last post by:
looks like this is a virus. i think it is some dodgy stuff. i thought it was an image file but no it looks more like an application. be wary of it >-----Original Message----- >Osama Bin Ladin was found hanged by two CNN journalists early Wedensday evening. As evidence they took several photos, some of which i have included here. As yet, this information has not hit the headlines due to Bush wanting confirmation of his identity but...
5
3667
by: Bob Greschke | last post by:
I want to cause any traceback output from my applications to show up in one of my dialog boxes, instead of in the command or terminal window (between running on Solaris, Linux, OSX and Windows systems there might not be any command window or terminal window to show the traceback messages in). Do I want to do something like override the print_exc (or format_exc?) method of traceback to get the text of the message and call my dialog box...
8
2006
by: gregpinero | last post by:
I'm running code via the "exec in context" statement within a much larger program. What I would like to do is capture any possible errors and show a pretty traceback just like the Python interactive interpreter does, but only show the part of the traceback relating to the code sent to exec. For example here is the code I'm using: try: exec code
1
2022
by: Sami Vaisanen | last post by:
This is becoming utterly painful process.... I found out that the return value from "format_exception" function is NOT a list, i.e. PyList_Check() fails. PySequence_Check() succeeds but then PySequence_List() gives me back -1. So wtf? I must say the API is crap on this part. Im trying to get error information regarding previous error and if all i get back is another error indicator, then what am I supposed to do? Recursive error...
0
1584
by: jairathore | last post by:
Hi, I m working on a project on which my requirment is like that remotely i control another application by using sendkey.sendwait method, i m sending some keystroke to that application and execute this application like. To run that application some shorcut key is there SendKeys.SendWait("(%)rs"); SendKeys.SendWait("{DOWN}"); SendKeys.SendWait("{TAB}"); SendKeys.SendWait("{ENTER}");
0
10614
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
0
10363
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
1
10369
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
0
9186
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
1
7649
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
0
6876
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
0
5544
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
2
3847
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
3
3008
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.