[PyQt] QComboBox.findItem and tuples

Phil Thompson phil at riverbankcomputing.com
Thu Oct 11 22:26:36 BST 2012


On Thu, 11 Oct 2012 22:21:09 +0200, Vicent Mas <uvemas at gmail.com> wrote:
> Hi,
> 
> as shows the following code, QComboBox.findItem works fine with lists
> but no with tuples.
> 
> if __name__ == "__main__":
>     import sip
>     sip.setapi('QVariant', 2)
>     from PyQt4 import QtGui
>     a = QtGui.QApplication([])
>     cb = QtGui.QComboBox()
>     cb.addItem("Foo", [3,4])
>     cb.addItem("Bah", (2, 2))
>     print cb.findData([3,4])
>     print cb.findData((2,2))
> 
> Is it a bug or just a limitation of the implementation? Or something
else?
> 
> TIA

It's a limitation of QVariant in that it doesn't provide an opportunity to
inject a call to a Python comparison function when comparing custom types.

Phil


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