atriclr_put.py

def put(self, request, pk):
    saved_article = get_object_or_404(Article.objects.all(), pk=pk)
    data = request.data.get('article')
    serializer = ArticleSerializer(instance=saved_article, data=data, partial=True
    if serializer.is_valid(raise_exception=True):
        article_saved = serializer.save()
    return Response({"success": "Article '{}' updated successfully".format(article_saved.title)})

seems like you missed to close parenthesis on line 4

seems like you missed to close parenthesis on line 4

Thanks for the catch @racyriaz