[PyQt] Hiding a row in a QAbstractItemModel

[Entity Reborn]

Hi again.
I have a QAbstractItemModel, as a model for a QTreeView, and have run into
an issue. Trying to hide a row, but haven't had success.
Even with storing the QTreeVew instance in the QAbstractItemModel and then
calling the view's setRowHidden() does not seem to work.

Main:

>             self.list = QtGui.QTreeView()
>             self.list.setModel(TreeModel(data, self.list))
>             delegate = ViewDelegate()
>             delegate.view = self.list
>             self.list.setItemDelegate(delegate)
>             ~EntityReborn
>

TreeModel:

> class TreeModel(QtCore.QAbstractItemModel):
>     def __init__(self, data, widget, parent=None):
>         super(TreeModel, self).__init__(parent)
>         self.parentWidget = widget
>         self.rootItem = TreeItem(data, None)
>         self.parseData(data, self.rootItem)
>

>
    def parseData(self, data, parent):
>         if "SubItems" in data:
>             for item in data["SubItems"]:
>                 newitem = TreeItem(item, parent, parent.rootItem)
>                 parent.appendChild(newitem)
>                 if not newitem.isVisible:
>                     row = newitem.row()
>                     index = self.createIndex(row, 0, parent)
>                     self.parentWidget.setRowHidden(row, index, True)
>                 self.parseData(item, newitem)
>

TreeItem:

>     def __init__(self, data, parent=None, root=None):
>         super(TreeItem, self).__init__(parent)
>         ...
>         self.isVisible = True
>         if "Visible" in data:
>             self.isVisible = data["Visible"]
>         ...
>

Unfortunately the actual row isn't hidden.
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