User Interface

Locan is mostly designed to work without a graphical user interface (gui). However, a few methods make use of a gui or interact with third-party libraries that provide a gui.

Locan and various other libraries make use of qt as a gui backend if it is installed together with appropriate python bindings. Different python bindings exist to interact with qt including pyside2 and pyqt5.

Locan makes use of pyqt to choose a binding. To force locan and other libraries to use a specific binding you can set the python environment variable QT_API before importing any QT-dependent package:

import os
os.environ["QT_API"] = "pyside2"

For more details see also the documentation on the locan.gui module.