Hi Avitab, The exception message tries to explain it to you. “IndentationError: unindent does not match any outer indentation level” Python expects perfect whitespace with your code, and you can’t mix spaces with tabs. In your view function, you are indenting with 4 spaces most of the time, but your first line in the function is with a tab. I recommend using an IDE such as PyCharm to help alleviate this issue so you don’t run into it again.
From: [email protected] [mailto:[email protected]] On Behalf Of Avitab Ayan Sarmah Sent: Tuesday, May 8, 2018 10:54 AM To: Django users Subject: can you check what is wrong with def vote(request, question_id), i am not able to run server. The exceptions and my views.py code are wrriten below: Views.py: from django.shortcuts import get_object_or_404, render from django.http import HttpResponseRedirect from django.urls import reverse from django.views import generic from . models import Choice, Question class IndexView(generic.ListView): template_name = 'polls/index.html' context_object_name = 'latest_question_list' def get_queryset(self): """Return the last five published questions.""" return Question.objects.order_by('-pub_date')[:5] class DetailView(generic.DetailView): model = Question template_name = 'polls/detail.html' class ResultsView(generic.DetailView): model = Question template_name = 'polls/results.html' def vote(request, question_id): ... # Same as above, no changes needed. question = get_object_or_404(Question, pk=question_id) try: selected_choice = question.choice_set.get(pk=request.POST['choice']) except (KeyError, Choice.DoesNotExist): # Redisplay the question voting form. return render(request, 'polls/detail.html', { 'question': question, 'error_message': "You didn't select a choice.", }) else: selected_choice.votes += 1 selected_choice.save() # Always return an HttpResponseRedirect after successfully dealing # with POST data. This prevents data from being posted twice if a # user hits the Back button. return HttpResponseRedirect(reverse('polls:results', args=(question.id,))) Exceptions: Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x00000261B72329D8> Traceback (most recent call last): File "c:\python36\lib\site-packages\django\utils\autoreload.py", line 225, in wrapper fn(*args, **kwargs) File "c:\python36\lib\site-packages\django\core\management\commands\runserver.py", line 121, in inner_run self.check(display_num_errors=True) File "c:\python36\lib\site-packages\django\core\management\base.py", line 364, in check include_deployment_checks=include_deployment_checks, File "c:\python36\lib\site-packages\django\core\management\base.py", line 351, in _run_checks return checks.run_checks(**kwargs) File "c:\python36\lib\site-packages\django\core\checks\registry.py", line 73, in run_checks new_errors = check(app_configs=app_configs) File "c:\python36\lib\site-packages\django\core\checks\urls.py", line 40, in check_url_namespaces_unique all_namespaces = _load_all_namespaces(resolver) File "c:\python36\lib\site-packages\django\core\checks\urls.py", line 57, in _load_all_namespaces url_patterns = getattr(resolver, 'url_patterns', []) File "c:\python36\lib\site-packages\django\utils\functional.py", line 36, in __get__ res = instance.__dict__[self.name] = self.func(instance) File "c:\python36\lib\site-packages\django\urls\resolvers.py", line 536, in url_patterns patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module) File "c:\python36\lib\site-packages\django\utils\functional.py", line 36, in __get__ res = instance.__dict__[self.name] = self.func(instance) File "c:\python36\lib\site-packages\django\urls\resolvers.py", line 529, in urlconf_module return import_module(self.urlconf_name) File "c:\python36\lib\importlib\__init__.py", line 126, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "<frozen importlib._bootstrap>", line 978, in _gcd_import File "<frozen importlib._bootstrap>", line 961, in _find_and_load File "<frozen importlib._bootstrap>", line 950, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 655, in _load_unlocked File "<frozen importlib._bootstrap_external>", line 678, in exec_module File "<frozen importlib._bootstrap>", line 205, in _call_with_frames_removed File "C:\Users\AVITABAYAN\mysite\mysite\urls.py", line 5, in <module> path('', include('polls.urls')), File "c:\python36\lib\site-packages\django\urls\conf.py", line 34, in include urlconf_module = import_module(urlconf_module) File "c:\python36\lib\importlib\__init__.py", line 126, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "<frozen importlib._bootstrap>", line 978, in _gcd_import File "<frozen importlib._bootstrap>", line 961, in _find_and_load File "<frozen importlib._bootstrap>", line 950, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 655, in _load_unlocked File "<frozen importlib._bootstrap_external>", line 678, in exec_module File "<frozen importlib._bootstrap>", line 205, in _call_with_frames_removed File "C:\Users\AVITABAYAN\mysite\polls\urls.py", line 3, in <module> from . import views File "C:\Users\AVITABAYAN\mysite\polls\views.py", line 31 try: ^ IndentationError: unindent does not match any outer indentation level -- You received this message because you are subscribed to the Google Groups "Django users" group. 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