text: from PySide2.QtWidgets import QApplication, QWidget
  
  # Only needed for access to command line arguments
  import sys
  
  # You need one (and only one) QApplication instance per application.
  # Pass in sys.argv to allow command line arguments for your app.
  # If you know you won't use command line arguments QApplication([]) works too.
  app = QApplication(sys.argv)
  
  # Create a Qt widget, which will be our window.
  window = QWidget()
  window.show()  # IMPORTANT!!!!! Windows are hidden by default.
  
  # Start the event loop.
  app.exec_()
  
  
  # Your application won't reach here until you exit and the event
  # loop has stopped.
  