Qt for Python (PySide/Shiboken)

Here is tiny example which leads to python recursion limit: from PySide2.QtCore import QObject, Signal, Slot from PySide2.QtWidgets import QApplication class T(QObject): signal = Signal() def __init__(self): super().__init__() self.signal.connect(self.slot) @Slot() def slot(self): print("enter action") self.signal.emit() print("exit action") app = QApplication() t = T() t.slot() app.exec_()