Issue 23650

http://ironpython.codeplex.com/WorkItem/View.aspx?WorkItemId=23650

Michael Foord

Dino Viehland wrote:
This is what we've tested so far :)

import pdb
def f():
...     print 'hi'
...     print 'goodbye'
...
pdb.runcall(f)
<stdin>(2)f()
(Pdb) s
hi
<stdin>(3)f()
(Pdb) s
goodbye
--Return--
<stdin>(3)f()->None
(Pdb) s
pdb.runcall(f)
<stdin>(2)f()
(Pdb) ?

Unfortunately there don't seem to be pdb tests so it's hard for us
to say what works and doesn't yet.  Could you open a bug on this and
that way it won't fall off our radar?

-----Original Message-----
From: [email protected] [mailto:users-
[email protected]] On Behalf Of Michael Foord
Sent: Monday, July 27, 2009 8:35 AM
To: Discussion of IronPython
Subject: [IronPython] pdb with IronPython 2.6 beta 2

Hello all,

I've been trying to use the pdb module with IronPython 2.6beta2 and the
interactive interpreter (with the -X:FullFrames command line option).
I've only used pdb with the set_trace function, but I couldn't get
*any*
of it to work in my brief exploration.

I've posted my interactive session below in case anyone can point out
what I'm doing wrong:

IronPython 2.6 Beta 2 (2.6.0.20) on .NET 2.0.50727.4016
Type "help", "copyright", "credits" or "license" for more information.
import pdb
def f():
...      a = 3
...      pdb.set_trace()
...
f()
print a
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'a' is not defined
pdb.run('f()')
def f():
...  a = 3
...  foo
...
pdb.pm()
<stdin>(1)<module>()
(Pdb) a
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Program Files\IronPython 2.6\Lib\pdb.py", line 1232, in pm
  File "C:\Program Files\IronPython 2.6\Lib\pdb.py", line 1229, in
post_mortem
  File "C:\Program Files\IronPython 2.6\Lib\pdb.py", line 194, in
interaction
  File "C:\Program Files\IronPython 2.6\Lib\cmd.py", line 142, in
cmdloop
  File "C:\Program Files\IronPython 2.6\Lib\pdb.py", line 252, in
onecmd
  File "C:\Program Files\IronPython 2.6\Lib\cmd.py", line 219, in
onecmd
  File "C:\Program Files\IronPython 2.6\Lib\pdb.py", line 702, in
do_args
SystemError: Object reference not set to an instance of an object.
For the record I tried the same with CPython and it worked as expected:

Python 2.5.4 (r254:67916, Dec 23 2008, 15:10:54) [MSC v.1310 32 bit
(Intel)] on
win32
Type "help", "copyright", "credits" or "license" for more information.
import pdb
def f():
...  a = 3
...  pdb.set_trace()
...
f()
--Return--
<stdin>(3)f()->None
(Pdb) a
(Pdb) print a
3
(Pdb)

 >>> def f():
...  a = 6
...  foo
...
 >>> f()
Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
   File "<stdin>", line 3, in f
NameError: global name 'foo' is not defined
 >>> pdb.pm()
 > <stdin>(3)f()
(Pdb) a
(Pdb) print a
6
(Pdb)



All the best,

Michael

--
http://www.ironpythoninaction.com/
http://www.voidspace.org.uk/blog

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--
http://www.ironpythoninaction.com/
http://www.voidspace.org.uk/blog


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