If you're using Python with SQLite and you want to be able to read and write to the database concurrently, you need to enable WAL. The problem is that only SQLite versions 3.7.x support this new functionality, and Python comes with older versions (at least Python 2.6.x does). So, you need to upgrade SQLite, but fortunately this is surprisingly easy. If you're on Windows, like I am, you should go t