I have a class that subclasses QObject. Everyting works fine but when I run mypy on it I get the error: "error: Class cannot subclass 'QObject' (has type 'Any')" At the moment I am totally stuck. I Have been reading the mypy docs but couldn't find where the error was. Here the code: from PyQt5.QtCore import QObject class ServiceLocator(QObject): def __init__(self) -> None: super().__init__() ... Cheers. Continue reading...