Console crashes with qt code

[spyder-bot]

From [email protected] on 2011-10-10T07:04:45Z

What steps will reproduce the problem?

1. type the following on an ipython console
   In [1]: from PyQt4.QtGui import QGraphicsScene, QGraphicsView

In [2]: s = QGraphicsScene()

In [3]: s.addText('toll')
Out[3]: <PyQt4.QtGui.QGraphicsTextItem object at 0x107c16738>

In [4]: v = QGraphicsView(s)

In [5]: v.show()

In [6]: del s What is the expected output? What do you see instead? The console crashes with the following print:
In [7]: 2011-10-10 14:00:12.514 Python[72047:1b03] *** __NSAutoreleaseNoPool(): Object 0x1081ae890 of class NSConcreteMapTable autoreleased with no pool in place - just leaking

spyder 2.0.13, Mac OS X 10.6.8, Python 2.6.1, Qt 4.7.2, PyQt 4.7.4 on Darwin

On windows the error
QObject::killTimers: timers cannot be stopped from another thread
appears when s and v are deleted...

Original issue: http://code.google.com/p/spyderlib/issues/detail?id=796

[spyder-bot]

From [email protected] on 2011-10-10T05:09:27Z

If that is of any help, I attach a stack trace of the crashed IPython process

Attachment: spyderqtcrash.rtf

[spyder-bot]

From pierre.raybaut on 2011-10-23T03:22:01Z

I haven't had the opportunity to play with QGraphicsScene/View interactively so I don't have any experience of it.

Anyway, typing the commands above do the following on Windows (works the same inside and outside Spyder):

• in a standard Python interpreter: makes Python crash (right after creating the graphics scene... weird)
• in IPython v0.10.x: no traceback, no crash, everything runs smoothly

So, basically, I can't reproduce this bug on Windows. I know that you specify that it crashed on OSX specifically but I'm only working on Linux and Windows.

[spyder-bot]

From [email protected] on 2011-11-09T09:38:02Z

As I said, I get a message on Windows in an IPython shell when I delete both s and v:

QObject::killTimers: timers cannot be stopped from another thread

BTW, I am not working with these objects frequently and it does not hurt me much. I just thought maybe this hints on some deeper problem... never mind.

[spyder-bot]

From ccordoba12 on 2014-08-23T13:32:37Z

Summary: Console crashes with qt code (was: console crashes with qt code)
Labels: MS-v2.4

[spyder-bot]

From ccordoba12 on 2014-09-21T11:45:07Z

This is working fine for me in our new IPython consoles. Could you verify if this is still a problem in Mac and Windows?

Labels: Easy

[spyder-bot]

From [email protected] on 2015-01-20T18:11:30Z

No a recent test on os x did not show any problems. Windows can't be tested currently.

[ccordoba12]

Closing because the Python console is going to be removed in Spyder 3.2.

Please see issue #4524 for our reasons to do this.