The example chart.py at /pyside-examples/examples/itemviews/chart breaks when
you click the pie chart with the following error message:

Traceback (most recent call last):
  File "./chart.py", line 573, in <module>
    sys.exit(app.exec_())
  File "./chart.py", line 382, in setSelection
    if not region.intersect(QtGui.QRegion(contentsRect)).isEmpty():
Boost.Python.ArgumentError: Python argument types in
    QRegion.intersect(QRegion, QRegion)
did not match C++ signature:
    intersect(QRegion {lvalue}, QRect)

If you change line #382:
- if not region.intersect(QtGui.QRegion(contentsRect)).isEmpty():
+ if not
region.intersect(QtGui.QRegion(contentsRect).boundingRect()).isEmpty():

the test generates another error:

Traceback (most recent call last):
  File "./chart.py", line 573, in <module>
    sys.exit(app.exec_())
  File "./chart.py", line 310, in paintEvent
    self.style().drawControl(QtGui.QStyle.CE_RubberBand, band, painter)
Boost.Python.ArgumentError: Python argument types in
    QGtkStyle.drawControl(QGtkStyle, ControlElement, QStyleOptionRubberBand,
QPainter)
did not match C++ signature:
    drawControl(QGtkStyle, QStyle::ControlElement, QStyleOption const*,
QPainter*, QWidget const*)
QPainter::end: Painter ended with 2 saved states