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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def removeSubEditor(self, subEditor):
 """ Removes the subEditor from the layout and removes the event filter. """

        if subEditor is self.focusProxy():
            self.setFocusProxy(None)

        subEditor.removeEventFilter(self)
        self._subEditors.remove(subEditor)
        self.hBoxLayout.removeWidget(subEditor)