Python2.7:如何从子类获取值

Question

class MyWindow():

    class Filter(QtCore.QObject):

        def eventFilter(self, widget, event):
            # FocusOut event            
            if event.type() == QtCore.QEvent.FocusOut:
                # do custom stuff
                print('Focus Event')
                isFocusEvent = True
                return False
            else:
                # we don't care about other events
                return False                

            return isFocusEvent

    def __init__(self, ui):
        self.ui=ui

    def mycode (self)
        myvalue=float(self.ui.myvalueEdit.text()) 

        self._filter = self.Filter()
        self.ui.myvalueEdit.installEventFilter(self._filter)

        if (isFocusEvent == True):
            ..........
            ..........

嗨，我在python2.7中使用了一个Qt接口，我会获取focusOutEvent（仅从一个Qt的字段中），然后保存所有self.ui.xxxx价值观。 我不能参加“isFocuEvent”考试！！保存过程没有问题。 你能帮帮我吗？ 谢谢您！你知道吗