访问在另一个类的方法中创建的变量

Question

我想回忆另一个类的变量，而不必使其成为全局变量。我来不了！你能帮我吗

class labTreeMap(QLabel):
    clickedQL = pyqtSignal()
    def mouseReleaseEvent(self,event):
        if event.button() == Qt.LeftButton:
            xTM = event.pos().x()
            yTM = event.pos().y()
            self.clickedQL.emit()

class TreeMap(QWidget):
    def click_TreeMap(self,c):
        xTM=labTreeMap.mouseReleaseEvent.xTM  # recall xTM from here
        yTM=labTreeMap.mouseReleaseEvent.yTM  # recall yTM from here

Answer 1

让它们成为实例变量

class labTreeMap(QLabel):
    clickedQL = pyqtSignal()
    def mouseReleaseEvent(self,event):
        if event.button() == Qt.LeftButton:
            self.xTM = event.pos().x()
            self.yTM = event.pos().y()
            self.clickedQL.emit()

class TreeMap(QWidget):
    def click_TreeMap(self,c):
        xTM=someLabTreeMap.xTM  # recall xTM from here
        yTM=someLabTreeMap.yTM  # recall yTM from here

将someLabTreeMap替换为保存先前调用mouseReleaseEvent()的labTreeMap对象的变量