[PyQt] QApplication.libraryPaths() bug?

[Phil Thompson]

On 09/02/2015 11:18 am, Marcus Ottosson wrote:
> I'm experiencing some odd behaviour when querying the results
> of QApplication.libraryPaths().
> 
>>>> import sys
>>>> from PyQt5 import QtWidgets
>>>> app = QtWidgets.QApplication(sys.argv)
> 
> This works fine.
> 
> 
> However, when querying libraryPaths() before instantiating 
> QApplication, I
> get an error.
> 
>>>> import sys
>>>> from PyQt5 import QtWidgets
>>>> QtWidgets.QApplication.libraryPaths()
> []
>>>> app = QtWidgets.QApplication(sys.argv)
> This application failed to start because it could not find or load the 
> Qt
> platform plugin "windows".
> 
> 
> And the results of libraryPaths() differ when run afterwards.
> 
>>>> import sys
>>>> from PyQt5 import QtWidgets
>>>> app = QtWidgets.QApplication(sys.argv)
>>>> QtWidgets.QApplication.libraryPaths()
> [u'C:/Python27']
> 
> 
> It's happening on PyQt 5.3.1 and 5.4. Is this a bug?

No. Those values are undefined until a QCoreApplication is created.

Phil