使用Pycharm+PyQt5弹出子窗口的程序代码

class video_record(QWidget):
 def __init__(self):
  super().__init__()
  self.initUI()
 def initUI(self):
  self.startbtn=QPushButton('begin',self)
  self.startbtn.setGeometry(40,20,100,20)
  self.startbtn.clicked.connect(self.time1)
  self.timeshow=QLineEdit('',self)
  self.timeshow.setGeometry(200,200,100,20)
  self.setGeometry(100,100,640,480)
  self.setWindowTitle('rec')
  self.show()
 def time1(self):
  print('rec start')
  self.nw=newin()
  self.nw.show()
  self.nw.exex_()
 
class newin(QDialog):
 def __init__(self):
  super().__init__()
  self.initUI()
 def initUI(self):
  self.lblx=QLabel('hh',self)
  self.lblx.setGeometry(100,100,100,20)
  self.lblx.setAutoFillBackground(True)
  self.pale=QPalette()
  self.pale.setColor(QPalette.Window,Qt.blue)
  self.lblx.setPalette(self.pale)
  self.setGeometry(100,100,300,300)
  self.setWindowTitle('newin')
  self.show()
if __name__ == '__main__':
 app=QApplication(sys.argv)
 ex=video_record()
 ex.show()
 sys.exit(app.exec_())

def time1(self):
  print('rec start')
  self.nw=newin()
  #self.nw.show()
  self.nw.exex_()