Behavior mismatch between PyQt and PySide implementation of loadUi

[bpabel]

PyQt4.uic.loadUi provides support for custom widgets using the "Promoted Widget" feature of Qt Designer. The convention in PyQt4 is to specify the import module path using the header file section. For example, if mypackage.mymodule.MyWidget is the custom Widget, then in Qt Designer you would list the header file as mypackage/mymodule.h and the class name as MyWidget and loadUi would translate that to mypackage.mymodule.MyWidget.

The loadUi implementation for PySide in qtpy doesn't appear to support this behavior.

[ccordoba12]

You're welcome to send a PR to fix/improve this. We provide a very simple implementation of loadUi for Pyside, just enough to provide compatibility with the the Glue project.

Spyder, on the other hand, doesn't use .ui files.