code: def end(self, s=None, post=None, noraise=False):
          
          s = s or self.end_msg
          self.printer(self.color.green(s))
          if post:
              post()
          if noraise:
              return
          raise ProgressOK()
docs: Prints the end banner and raises ``ProgressOK`` exception
  
          When ``noraise`` flag is set to ``True``, then the exception is not
          raised, and progress is allowed to continue.
  
          If ``post`` function is supplied it is invoked with no arguments after
          the close banner is printed, but before exceptions are raised. The
          ``post`` function takes no arguments.