Ranked in these QuestionsQuestion Ranking
Pro Supported by the Qt Company
Qt for Python aka PySide2 is the official set of Python bindings supported by the Qt Company.
Pro Weak copyleft
PySide is licensed under the LGPL, which makes it easier to incorporate into commercial projects than PyQt.
Pro Qt widgets
Possibility to use a traditional widget-based user interface.
Possibility to use a declarative approach to define the user interface.