How to remove widget from QAbstractItemView

QAbstractItemView has `setIndexWidget but doesn't have "remove" function. I tried to work it around by storing widgets that are passed to QAbstractItemView and hide / delete them when I want to remove them from the view, which ends up with RuntimeError: wrapped C/C++ object of %S has been deleted error. I assume that is due to the ownership of the widgets are passed to viewport, as the doc says: Sets the given widget on the item at the given index, passing the ownership of the widget to the viewport. How can I remove widgets? I'm using PyQt but I assume it's valid question for C++ and PySide too.