code: def set_prompt(scope, prompt=None):
      
      conn = scope.get('__connection__')
      conn.set_prompt(prompt)
      return True
docs: Defines the pattern that is recognized at any future time when Exscript
      needs to wait for a prompt.
      In other words, whenever Exscript waits for a prompt, it searches the
      response of the host for the given pattern and continues as soon as the
      pattern is found.
  
      Exscript waits for a prompt whenever it sends a command (unless the send()
      method was used). set_prompt() redefines as to what is recognized as a
      prompt.
  
      :type  prompt: regex
      :param prompt: The prompt pattern.