[PyQt] itemChange vs reparent vs pyqtSlot

[Phil Thompson]

On 15 Aug 2016, at 9:13 pm, oliver <oliver.schoenborn at gmail.com> wrote:
> 
> We need to reparent a graphics item to another. My colleague came across the weirdest bug: just decorating a function with pyqtSlot(QPushButton) causes QGraphicsItem.itemChange() to fail reparenting (reparentItem()). Just run the following example with stock PyQt 5.5.1 (downloaded from riverbank website in binary form) and observe the output: 

> If anyone can try this in PyQt 5.7 and let us know if the bug is gone, that would be good enough since upgrading to that version is on our short-term roadmap. 
> 
> If the bug is still in latest 5.7 binary release, I'm really hoping someone can suggest a workaround that would allow us to continue to use itemChange, setParentItem and QPushButton or QGraphicsItem as arg to pyqtSlot decorator.

Works for me PyQt v5.7.

Phil