code: def callback_handler_install(self, prompt, callback):
          u'''bool readline_callback_handler_install ( string prompt, callback callback)
          Initializes the readline callback interface and terminal, prints the prompt and returns immediately
          '''
          self.callback = callback
          self.readline_setup(promptf callback_handler_install(self, prompt, callback):
          u'''bool readline_callback_handler_install ( string prompt, callback callback)
          Initializes the readline callback interface and terminal, prints the prompt and returns immediately
          '''
          self.callback = callback
          self.readline_setup(prompt)
docs: u'''bool readline_callback_handler_install ( string prompt, callback callback)
          Initializes the readline callback interface and terminal, prints the prompt and returns immediately