text: #!/usr/bin/env python
  
  import sys
  from qtpy import QtWidgets
  
  
  
  def window():
      app = QtWidgets.QApplication(sys.argv)
      w = QtWidgets.QWidget()
      b = QtWidgets.QLabel(w)
      b.setText("Hello World!")
      w.setGeometry(100,100,200,50)
      b.move(50,20)
      w.setWindowTitle("hello")
      w.show()
      sys.exit(app.exec_())
  
  if __name__ == '__main__':
      window()
  