from PyQt5.QtWidgets import *

 from PyQt5 import QtCore,QtWidgets

 from PyQt5.QtGui import *

 import sys

 class A(QWidget):

     def __init__(self):

         super(A,self).__init__()

         self.setFixedSize(400,500)

         self.layout=QGridLayout(self)

         self.btn=QPushButton('添加')

         self.layout.addWidget(self.btn)

         self.setLayout(self.layout)

         self.btn.clicked.connect(self.btn1)

     def btn1(self):

         label={}

         ok,f=QFileDialog.getOpenFileNames(self,'打开','/','jpg(*.jpg)')

         for i,j in enumerate(ok):

             label[i]=QLabel(str(i))

             label[i].setFixedSize(500,500)

             self.layout.addWidget(label[i])

             pix=QPixmap(j)

             label[i].setPixmap(pix)

             self.resize(pix.width(),pix.height())

 if __name__ == '__main__':

     app = QApplication(sys.argv)

     a = A()

     a.show()

     sys.exit(app.exec_())