new_contents: # doc-export: Redirect
  """
  Example that demonstrates redirecting and opening a new page.
  This example only works when opened in a browser (not with
  ``launch(Redirect, 'app')``).
  
  Note that one can also open a webpage from Python:
  
  import webbrowser
  webbrowser.open('http://python.org')
  """
  
  from flexx import flx
  
  
  class Redirect(flx.Widget):
      
      def init(self):
          self.but1 = flx.Button(text='Redirect')
          self.but2 = flx.Button(text='Open new page')
      
      @flx.reaction('but1.pointer_click')
      def on_redirect(self, *events):
          global window
          window.location.href = 'http://python.org'  # allow going back
          # window.location.replace('http://python.org')  # hard redirect
      
      @flx.reaction('but2.pointer_click')
      def on_opennew(self, *events):
          global window
          window.open('http://python.org', '_blank')
  
  
  if __name__ == '__main__':
      m = flx.launch(Redirect, 'browser')
      flx.start()
  
subject: add redirect example