code: def execute(self, args):
          
          _run_atstart()
          hook_name = os.path.basename(args[0])
          if hook_name in self._hooks:
              try:
                  self._hooks[hook_name]()
              except SystemExit as x:
                  if x.code is None or x.code == 0:
                      _run_atexit()
                  raise
              _run_atexit()
          else:
              raise UnregisteredHookError(hook_name)
docs: Execute a registered hook based on args[0]