human
Solve the following python programming problem given the following code:
def __call__(self, view) : 
    action_name = self.kwargs ['attr'] 
    def view_mapper_wrapper(context, request) : 
        matchdict = request.matchdict.copy () 
        matchdict.pop ('action', None) 
        matchdict.pop ('traverse', None) 
        view_obj = view (context, request) 
        action = getattr (view_obj, action_name) 
        request.action = action_name 
        tunneled = getattr (request, '_tunneled_get', False) 
        if (tunneled and (action_name in ('update_many',))) : 
            view_obj._query_params = dictset () 
request.filters = view_obj._after_calls 
        try : 
            for call in view_obj._before_calls.get (action_name, []) : 
                call (request = request) 
except wrappers.ValidationError as e : 
            log.error ('validation error: %s', e) 
            raise JHTTPBadRequest (e.args) 
except wrappers.ResourceNotFound as e : 
            log.error ('resource not found: %s', e) 
            raise JHTTPNotFound () 
with trigger_events (view_obj) : 
            view_obj._response = action (** matchdict) 
            return view_obj._response 
return view 

    
    

    Fix the buggy line: return view
assistant
#Here is Python code to fix the buggy line: return view
.

return def view_mapper_wrapper(