[PyKDE] Memory leak when overriding QListViewItem.key()?

[Fredrik Juhlin]

On Sat, 2002-08-17 at 15:12, Phil Thompson wrote:
> Fredrik Juhlin wrote:
> 
> > Hi!
> > 
> > While trying to figure out the best way to control the sorting of a
> > QListView, I stumbled over what seems to be some sort of memory leak
> > when I override QlistViewItem.key().
> > 
> > When I run the code below, my python process uses aprox 58MB. If I
> > uncomment the key() method in MyListItem, it uses 150MB.
> > 
> > If there's a reasonable explanation for this that eludes me, or if I'm
> > simply doing something horribly wrong, please let me know :)
> 
> What about MyListItem.__init__()?
Just overriding __init__() does not cause any difference in memory
consumption.

I tried a few others, with the following result:
text(): Increased memory usage (Seemingly identical to overriding key())
compare(): No increase in memory usage

//Fredrik Juhlin

#!/usr/bin/env python

import qt
import sys

class MyListItem(qt.QListViewItem):
    def __init__(self, parent):
        qt.QListViewItem.__init__(self, parent)

# NOTE: Uncomment either of the methods below for memory-eating 
#       behaviour
#    def key(self, column, ascending):
#        return qt.QListViewItem.key(self, column, ascending)
        
#    def text(self, column):
#        return qt.QListViewItem.text(self, column)
    


if __name__ == '__main__':
    app = qt.QApplication(sys.argv)
    lw = qt.QListView()
    lw.addColumn('Mepp')
    for x in xrange(5000):
        li = MyListItem(lw)
        li.setText(0, str(x))

    app.setMainWidget(lw)
    lw.show()
    app.exec_loop()