SortFilterProxyModel | A nicely exposed QSortFilterProxyModel for QML | Widget library

The OP does not provide the line of code that generates the error but according to my experience it is trying to translate some code written in C++ (or an old version of PyQt4) where the texts are associated to QString that have the contains() method that accepts a QRegex but in PyQt5 the texts are python strings so they don't have that method. The solution is to implement the same logic using the indexIn method of QRegex:

I could not able to run your code. Since I am using older version of Qt. So I make a simple working proto with reimplemented QSortFilterProxyModel class and used it in qml for filtering and sorting. My source model is a listview, in your case that's a table view. other things are the same.

The probable part of the code needs to check. 1. Reimplementation of filterAcceptsRow 2. Reimplementation of lessThan 3. Ensure making a call to invalidateFilter while changing the search text 4. Ensure making a call to default sort function while changing sortOrder

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