I asked this before, but got no response, but I KNOW YOU KNOW ;-)
A year or so ago, I was given a really useful answer to a question posed
here, which showed me how to start the debugger from withing a script.
Yes, of course I've lost the mail (and I have trawled through all my old
mail), and yes, I know I'm stupid!
I'm surprised this isn't a FAQ, BTW, as it seems such a useful facility.
So come on guys, cough it up!
Thanks
Graham Nicholls
--
#include <wit> 8 1575
Graham Nicholls wrote: A year or so ago, I was given a really useful answer to a question posed here, which showed me how to start the debugger from withing a script.
Are you looking for pdb.set_trace()?
Peter
Peter Otten wrote: Graham Nicholls wrote:
A year or so ago, I was given a really useful answer to a question posed here, which showed me how to start the debugger from withing a script.
Are you looking for pdb.set_trace()?
Peter
I think so, thanks!
Graham
--
#include <wit>
Graham Nicholls wrote: Peter Otten wrote:
Graham Nicholls wrote:
A year or so ago, I was given a really useful answer to a question posed here, which showed me how to start the debugger from withing a script.
Are you looking for pdb.set_trace()?
Peter I think so, thanks! Graham
Or maybe not.
I'm sure I was able to print the value of variables like this:
except :
pdb.set_trace()
run the program:
error message
(Pdb) d <return> (not sure why!)
(Pdb) print dentry.path
(Pdb) more debugging here
But pdb complains that there are no such variables. It may be that I had to
add some incantation around the script startup - I just can't remember (and
its frustrating!).
Thanks
Graham
--
#include <wit>
Graham Nicholls wrote: I'm sure I was able to print the value of variables like this:
except : pdb.set_trace()
[...] But pdb complains that there are no such variables. It may be that I had to add some incantation around the script startup - I just can't remember (and its frustrating!).
<debugger.py>
import pdb
abc = 1
try:
print "before"
1/0
except:
pdb.set_trace()
print "after"
</debugger.py>
Now run it:
before
--Return-- /(suppressed)/python2.3/pdb.py(992)set_trace()->None
-> Pdb().set_trace()
(Pdb) abc
*** NameError: name 'abc' is not defined
(Pdb) u /(suppressed)/debugger.py(7)?()
-> pdb.set_trace()
(Pdb) abc
1
(Pdb)
If the above sample session doesn't help, you could actually read the pdb
documentation - or do something new and dangerous: search google groups
for, say, Nicholls and set_trace :-)
Peter
Graham Nicholls fed this fish to the penguins on Sunday 04 January 2004
11:27 am: But pdb complains that there are no such variables. It may be that I had to add some incantation around the script startup - I just can't remember (and its frustrating!).
Did you remember to import pdb at the start?
-- ================================================== ============ < wl*****@ix.netcom.com | Wulfraed Dennis Lee Bieber KD6MOG < wu******@dm.net | Bestiaria Support Staff < ================================================== ============ < Bestiaria Home Page: http://www.beastie.dm.net/ < Home Page: http://www.dm.net/~wulfraed/ <
Peter Otten wrote: Graham Nicholls wrote:
I'm sure I was able to print the value of variables like this:
except : pdb.set_trace() [...] But pdb complains that there are no such variables. It may be that I had to add some incantation around the script startup - I just can't remember (and its frustrating!).
<debugger.py> import pdb abc = 1 try: print "before" 1/0 except: pdb.set_trace() print "after" </debugger.py>
Now run it:
before --Return-- /(suppressed)/python2.3/pdb.py(992)set_trace()->None -> Pdb().set_trace() (Pdb) abc *** NameError: name 'abc' is not defined (Pdb) u /(suppressed)/debugger.py(7)?() -> pdb.set_trace() (Pdb) abc 1 (Pdb)
If the above sample session doesn't help, you could actually read the pdb
I have had a look, but its rather a case of you don't know what you don't
know, IYSWIM. documentation - or do something new and dangerous: search google groups for, say, Nicholls and set_trace :-)
What a good idea!
Thanks again
PS 1 minute later and I've found the relevant posting, which indeed mentions
using set_trace().
I have in ordinary google searches of course returned ng postings, but had
never used their group searches, so thnkas on two counts. Peter
Regards
Graham
--
#include <wit>
Peter Otten wrote: Graham Nicholls wrote:
.... But pdb complains that there are no such variables. It may be that I had to add some incantation around the script startup - I just can't remember (and its frustrating!).
....
-> Pdb().set_trace() (Pdb) abc *** NameError: name 'abc' is not defined (Pdb) u
This is the key line, 'n' would work as well. The reason your variables
weren't being found is that you were still inside the call to
set_trace(). You need to return from that (either by going "u"p to the
calling context, or to the "n"ext instruction, which returns to the
calling context by finishing the set_trace() call).
Enjoy,
Mike
_______________________________________
Mike C. Fletcher
Designer, VR Plumber, Coder http://members.rogers.com/mcfletch/
"Mike C. Fletcher" wrote: Peter Otten wrote:
Graham Nicholls wrote:
...
But pdb complains that there are no such variables. It may be that I had to add some incantation around the script startup - I just can't remember (and its frustrating!).
...
-> Pdb().set_trace() (Pdb) abc *** NameError: name 'abc' is not defined (Pdb) u
This is the key line, 'n' would work as well. The reason your variables weren't being found is that you were still inside the call to set_trace(). You need to return from that (either by going "u"p to the calling context, or to the "n"ext instruction, which returns to the calling context by finishing the set_trace() call).
"r" (for "return") works as well....
Wow! Three obvious ways to do the same thing. ;-)
-Peter This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
by: Bob |
last post by:
Hi,
I'm trying to build a PHP page which launches another php script to be run
in the background. The web page should return immediately, while the
background script may run for 10 minutes or...
|
by: David |
last post by:
Hello. I've written a page for an intranet that gives the user the
option of launching a Word or PowerPoint document.
The code I used to force the hyperlink to launch the application
rather...
|
by: VA |
last post by:
I have a report that is accessible by a URL.
How would I go about automating the launching of this URL using, say, a
batch file?
I can put
start iexplore.exe "http://my.url"
in the .bat...
|
by: LordHog |
last post by:
Hello all,
I was wondering what is the best method of launching an
application/exectable from within the Managed VC++ environment? I have
found some information which describe CreateProcess and...
|
by: Water Cooler v2 |
last post by:
I have a Windows Service I am writing in C# and a set of, let us say
three, other executables written in C# (mostly console applications).
I want that the Windows Service must do so every few...
| |
by: microb0x |
last post by:
Is there any difference in the way an Access .mdb file is launched from
directly double-clicking the file through windows explorer versus using
code within another Access file to launch the...
|
by: Andrew Neiderer |
last post by:
I think I am asking the right newsgroup. If not maybe someone could
tell me where to ask this "beginner" question.
I want to click on an image (.jpg) that launches a Microsoft window
(cmd.exe...
|
by: =?iso-8859-1?B?QW5kcuk=?= |
last post by:
I would like to find out how I can launch an independent Python
program from existing one in a cross-platform way. The result I am
after is that a new terminal window should open (for io...
|
by: Oriane |
last post by:
Hi there,
I would like to run a javascript file directly from the desktop, like a
VBScript file. So my post is perhaps "out of topic" in which case I
apologize.
The goal is to run this sort...
|
by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
|
by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...
| |
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,...
|
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...
|
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,...
|
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...
|
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
| |
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...
| |