diff --git a/models.py b/models.py
index 57dabd2..3bf42a1 100644
--- a/models.py
+++ b/models.py
@@ -5,10 +5,7 @@ class Poll(models.Model):
 	pub_date = models.DateTimeField('date published')
 	ballots = models.IntegerField(default=0)
 	def total_votes(self):
-		v = 0
-		for c in self.choice_set.all():
-			v += c.votes
-		return v
+		return sum(c.votes for c in self.choice_set.all())
 	def __unicode__(self):
 		return self.question
 
@@ -17,9 +14,7 @@ class Choice(models.Model):
 	choice_text = models.CharField(max_length=200)
 	votes = models.IntegerField(default=0)
 	def percentage(self):
-		if self.poll.ballots == 0:
-			return 0
-		return self.votes*100/self.poll.ballots
+		return 0 if self.poll.ballots == 0 else self.votes*100/self.poll.ballots
 	def __unicode__(self):
 		return self.choice_text
 
diff --git a/views.py b/views.py
index ea26f4a..07e4071 100644
--- a/views.py
+++ b/views.py
@@ -33,13 +33,13 @@ class ResultsView(generic.DetailView):
 def vote(request, poll_id):
     p = get_object_or_404(Poll, pk=poll_id)
     for counter,choice in enumerate(p.choice_set.all()):
-	try:
-		request.POST['choice'+str(counter+1)]
-	except (KeyError):
-		pass
-	else:
-		choice.votes += 1
-		choice.save()
+        try:
+            request.POST[f'choice{str(counter + 1)}']
+        except (KeyError):
+        	pass
+        else:
+            choice.votes += 1
+            choice.save()
     p.ballots += 1
     p.save()
     return HttpResponseRedirect(reverse('approval_polls:results', args=(p.id,)))