python new kill callback

# coding=utf-8
'''
    Created  by Alpha on 2017-05-25.
    Copyright (c) 2018 Alpha.All rights reserved.
'''
try:
    from PyQt4 import QtGui, QtCore
    from PyQt4.QtCore import pyqtSignal as pyqtSignal
    from PyQt4.QtCore import pyqtSlot as pyqtSlot
except:
    pass
import os,sys
import math
#usage first
class myLabel(QtGui.QLabel):
    Clicked = pyqtSignal(str)
    def __init__(self,parent=None):
        super(myLabel, self).__init__(parent)
        self.textStr = ''
    def mousePressEvent(self, e):
        self.Clicked.emit(self.textStr)

class myTest(QtGui.QWidget):
    def __init__(self,parent=None):
        super(myTest, self).__init__(parent)

        self.imgPath = []
        self.callbackList = []
        self.imgLabels = []

        self.grideLayout = QtGui.QGridLayout()
        self.setLayout(self.grideLayout)

    def loadImg(self,callback,*args):
        self.callbackList.append(callback)
        if not os.path.isdir(args):
            return False
        dirs = os.listdir(args)
        for file in dirs:
            imgLabel = myLabel()
            self.imgPath.append(file)
            self.imgLabels.append(imgLabel)
            indexImg = dirs.index(file)
            imgLabel.Clicked.connect(self.callbackList[indexImg])