# MySignals.py
from PySide.QtCore import QObject, Signal

class MyCheckedSignal(QObject):
    signal = Signal(str)


# MyRadioButton.py
class MyRadioButton(QWidget, QObject):
    def __init__(self, value=None, label=None):
        QWidget.__init__(self)
    self.__value = value
    self.__checked = False
    self.checkSignal = MySignals.MyCheckedSignal()

    def toggleCheck(self):
    if self.__checked == False:
        self.__checked = True
        self.checkSignal.emit(SIGNAL(self.__value))
    else:
        self.__checked = False

# MyRadioGroup.py
class MyRadioGroup(QObject):
    def __init__(self, radioes=None):
        QObject.__init__(self)
        for radio in radioes:
        # radio is of type MyRadio
            # self.connect(radio, SIGNAL("checked()"), self.update)
            radio.checkSignal.signal.connect(self.update)
            # self.connect(self.update)

    def update(self, value):
        print("Checked")