code: def save_file_dialog(wildcard):
      
      app = wx.App(None)
      # style = wx.FD_OPEN | wx.FD_FILE_MUST_EXIST
      dialog = wx.FileDialog(None, 'Save file as ...', defaultDir=os.getcwd(), defaultFile="",
                             wildcard=wildcard, style=wx.SAVE)
      if dialog.ShowModal() == wx.ID_OK:
          path = dialog.GetPath()
          print("You chose the following filename: %s" % path)
      else:
          path = None
      dialog.Destroy()
      return path
docs: Show a save file dialog.
          TODO: This is not fully implemented.