What specific version of Python are you using (2.7...x?) On Wed, Apr 22, 2015 at 8:26 PM, John DeRosa <[email protected]> wrote:
> Oh, sorry. > > Well, you’re using joblib. The joblib.load() call loads something and > return a Python object into the symbol clf. > > It would seem you need to look at the object that joblib.load is > reconstituting. This code snippet doesn’t give enough information to > diagnose this, but if I were you, I’d probably try this: > > 1. What file does "joblib.load(os.path.join(CLASSIFIERS_PATH, filter_name, > classifier_name))” read, and what object does it return? > > 2. Can you interactively run this code in the Python interpreter? Does it > run OK, or does it throw an exception? > > 3. If it works on your development machine, try running it interactively > on your production machine. Ssh into your production server and run the > code. > > 4. What does dir(clf) return? Does the clf object have the methods you > expect it to have? > > > If you can get it to throw an exception when you run it from the > interactive prompt, you can single-step it. > > John > > > On Apr 22, 2015, at 4:10 PM, Cristian Javier Martinez < > [email protected]> wrote: > > Thanks for your reply John DeRosa but the question is about what is > causing the exception because I'm not using threads at all and the error > says "*'Thread' object has no attribute '_children'"*. I'm catching the > error and printing it out before the return as you can see in the log. > > El miércoles, 22 de abril de 2015, 19:13:55 (UTC-3), John DeRosa escribió: >> >> If you get an exception, the “except” clause will drop down into the >> “return” statement, and classification_serializer will be referenced before >> it’s assigned to. (Because it never was assigned to.) >> >> John >> >> On Apr 22, 2015, at 2:36 PM, Cristian Javier Martinez < >> [email protected]> wrote: >> >> Hi! I'm using the django rest framework and successfully deployed an >> application in a production environment but I'm having an strange error >> related to threads when I call a method that performs a simple >> classification task (using a scikit learn classifier) and I have no idea >> what is causing the error. This is the method in views.py >> >> @api_view(['GET', 'POST']) >> def classify_item(request): >> """ >> Classify item, or list classifications. >> """ >> if request.method == 'GET': >> items = Item.objects.all() >> serializer = ItemSerializer(items, many=True) >> return Response(serializer.data) >> >> elif request.method == 'POST': >> serializer = ItemSerializer(data=request.data['item']) >> if serializer.is_valid(): >> try: >> item = serializer.data >> filter_name = request.data['filter'] >> >> >> # fix encoding >> item_dict = {} >> for key in item: >> value = item[key] >> if isinstance(value, unicode): >> value = >> value.encode('utf-8') >> item_dict[key] = value >> >> classifier_name = >> CLASSIFIER_NAME_BY_FILTER[filter_name] >> >> logger.debug("retrieving the persisted >> classifier and classifing the item") >> clf = >> joblib.load(os.path.join(CLASSIFIERS_PATH, filter_name, classifier_name)) >> >> logger.debug("predicting probabilities") >> data = pd.DataFrame([item_dict]) >> >> logger.debug("scoring item") >> score = clf.predict(data)[0][1] >> >> logger.debug("score: {}".format(score)) >> >> >> # create and save classification >> classification = >> Classification(classifier_name=classifier_name,score=score,item_id=item['_id']) >> classification_serializer = >> ClassificationSerializer(classification) >> #classification_serializer.save() >> except Exception as e: >> logger.error("Ocurrio un error al >> intentar parsear el item: {}".format(e)) >> return Response(classification_serializer.data, >> status=status.HTTP_201_CREATED) >> >> return Response(serializer.errors, >> status=status.HTTP_400_BAD_REQUEST) >> >> And the output is: >> >> [22/Apr/2015 21:14:56] DEBUG [classifiers.views:63] retrieve the >> classifier for the given sited_id and classify item >> [22/Apr/2015 21:15:14] DEBUG [classifiers.views:66] predicting >> probabilities >> [22/Apr/2015 21:15:14] DEBUG [classifiers.views:69] scoring item >> [22/Apr/2015 21:15:14] ERROR [classifiers.views:80] Ocurrio un error al >> intentar parsear el item: *'Thread' object has no attribute '_children'* >> [22/Apr/2015 21:15:14] ERROR [django.request:256] Internal Server Error: >> /items/ >> Traceback (most recent call last): >> File >> "/home/keepcon/meli_filters_env/local/lib/python2.7/site-packages/django/core/handlers/base.py", >> line 132, in get_response >> response = wrapped_callback(request, *callback_args, >> **callback_kwargs) >> File >> "/home/keepcon/meli_filters_env/local/lib/python2.7/site-packages/newrelic-2.50.0.39/newrelic/hooks/framework_django.py", >> line 499, in wrapper >> return wrapped(*args, **kwargs) >> File >> "/home/keepcon/meli_filters_env/local/lib/python2.7/site-packages/django/views/decorators/csrf.py", >> line 58, in wrapped_view >> return view_func(*args, **kwargs) >> File >> "/home/keepcon/meli_filters_env/local/lib/python2.7/site-packages/django/views/generic/base.py", >> line 71, in view >> return self.dispatch(request, *args, **kwargs) >> File >> "/home/keepcon/meli_filters_env/local/lib/python2.7/site-packages/newrelic-2.50.0.39/newrelic/hooks/component_djangorestframework.py", >> line 27, in _nr_wrapper_APIView_dispatch_ >> return wrapped(*args, **kwargs) >> File >> "/home/keepcon/meli_filters_env/local/lib/python2.7/site-packages/rest_framework/views.py", >> line 452, in dispatch >> response = self.handle_exception(exc) >> File >> "/home/keepcon/meli_filters_env/local/lib/python2.7/site-packages/rest_framework/views.py", >> line 449, in dispatch >> response = handler(request, *args, **kwargs) >> File >> "/home/keepcon/meli_filters_env/local/lib/python2.7/site-packages/rest_framework/decorators.py", >> line 50, in handler >> return func(*args, **kwargs) >> File "/home/keepcon/meli_filters/classifiers/views.py", line 81, in >> classify_item >> return Response(classification_serializer.data, >> status=status.HTTP_201_CREATED) >> UnboundLocalError: local variable 'classification_serializer' referenced >> before assignment >> >> I was having an UnicodeEncodeError but I fixed it by adding "the fix >> encoding" step. I'll appreciate any cue about what could be causing this >> error, I don't understand why the error says something about threads since >> I'm not using threads. >> >> Thanks in advance! >> >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Django users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at http://groups.google.com/group/django-users. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/django-users/da84ec7a-24a2-46b5-8d72-2d46c2d5a304%40googlegroups.com >> <https://groups.google.com/d/msgid/django-users/da84ec7a-24a2-46b5-8d72-2d46c2d5a304%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> For more options, visit https://groups.google.com/d/optout. >> >> >> > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/django-users. > To view this discussion on the web visit > https://groups.google.com/d/msgid/django-users/d38108d0-eda7-4e9e-9723-793a3290e030%40googlegroups.com > <https://groups.google.com/d/msgid/django-users/d38108d0-eda7-4e9e-9723-793a3290e030%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > > > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/django-users. > To view this discussion on the web visit > https://groups.google.com/d/msgid/django-users/C3FB1241-2E13-4137-96EF-3EED46FD1710%40solinea.com > <https://groups.google.com/d/msgid/django-users/C3FB1241-2E13-4137-96EF-3EED46FD1710%40solinea.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Django users" group. 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