--- a/eric6/Tools/UIPreviewer.py Thu Apr 08 17:27:12 2021 +0200 +++ b/eric6/Tools/UIPreviewer.py Thu Apr 08 18:27:47 2021 +0200 @@ -337,7 +337,8 @@ """ Private slot to load a ui file. - @param fn name of the ui file to be laoded (string) + @param fn name of the ui file to be laoded + @type str """ if self.mainWidget: self.mainWidget.close() @@ -354,10 +355,7 @@ if self.mainWidget: self.currentFile = fn self.__updateChildren(self.styleCombo.currentText()) - if ( - isinstance(self.mainWidget, QDialog) or - isinstance(self.mainWidget, QMainWindow) - ): + if isinstance(self.mainWidget, (QDialog, QMainWindow)): self.mainWidget.show() self.mainWidget.installEventFilter(self) else: