[PyQt] Method names from SIP-wrapped classes not showing in cProfile output

[Håkon Bertheussen]

I'm trying to profile some code that uses SIP wrapped classes
extensively. I'm having a problem with the output from cProfile;
method names of sip-wrapped classes are not showing, instead a string
like "{sip.methoddescriptor object at 0x...}" is displayed. The thing
is I know this used to work with a previous setup I had. Since then
I've updated Python, SIP and PyQt, so I don't know which is the
culprit. I'm using Python 2.6.2, PyQt-win-gpl-4.5-snapshot-20090507
and sip-4.8-snapshot-20090430.

Example:

from PyQt4 import QtGui
import cProfile

def test():
    for _ in xrange(10):
        image = QtGui.QImage(3000, 3000, QtGui.QImage.Format_ARGB32)
        image.fill(QtGui.qRgb(50, 100, 150))

def main():
    cProfile.run('test()')

if __name__=='__main__':
    main()

This outputs:
$>proftest.py
         23 function calls in 0.324 CPU seconds

   Ordered by: standard name

   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
        1    0.003    0.003    0.324    0.324 <string>:1(<module>)
        1    0.024    0.024    0.321    0.321 proftest.py:4(test)
       10    0.000    0.000    0.000    0.000 {PyQt4.QtGui.qRgb}
        1    0.000    0.000    0.000    0.000 {method 'disable' of '_lsprof.Prof
iler' objects}
       10    0.297    0.030    0.297    0.030 {sip.methoddescriptor object at 0x
0245D1B0}