code: def async(self, space):
          "Check if this is an exception that should better not be caught."
          return (self.match(space, space.w_SystemExit) or
                  self.match(space, space.w_KeyboardInterrupt)f async(self, space):
          "Check if this is an exception that should better not be caught."
          return (self.match(space, space.w_SystemExit) or
                  self.match(space, space.w_KeyboardInterrupt))
docs: Check if this is an exception that should better not be caught.