from PySide2.QtCore import QObject, Signal as QtSignal
from PySide2.QtWidgets import QWidget, QApplication

class QLoggerObject(QObject):
    filter_updated = QtSignal()

    def __init__(self, parent: QObject = None):
        super(QLoggerObject, self).__init__()
        

class QLogger(object):
    def __init__(self, name: str, parent: QWidget = None, ui: bool = True):
        self.name = name
        self.widget = QLoggerObject(parent)
        self.widget.filter_updated.connect(self.slot)

    def slot(self):
        print('Slot invoked')

    def __eq__(self, other):
        if isinstance(other, QLogger):
            return self.name == other.name

        if isinstance(other, str):
            return self.name == other

        return super().__eq__(other)

if __name__ == '__main__':
    app = QApplication([])
    l = QLogger('name')

self.widget.filter_updated.connect(self.slot)

Process finished with exit code 139 (interrupted by signal 11: SIGSEGV)