I’ve been learning PySide which is an amazingly easy library to get into GUI development. For an application I was developing, I needed a search filter for some hierarchical data represented by QTreeView. QSortFilterProxyModel is the default choice to add a filter to a QTreeView, but it, by default, applies the filter to all nodes from any root to leaf. If any node has to show up in the search result, all the nodes from a root to that node have to match the search filter, which is mostly useless for hierarchical data. Read More...