Converting Boolean value from Javascript to Django?

Converting Boolean value from Javascript to Django?

I noticed that when Boolean data is sent from javascript to Django view,
it is passed as "true"/"false" (lowercase) instead of
"True"/"False"(uppercase). This causes an unexpected behavior in my
application. For example:
vote.js
....
var xhr = {
'isUpvote': isUpvote
};
$.post(location.href, xhr, function(data) {
doSomething()
});
return false;
});
views.py
def post(self, request, *args, **kwargs):
isUpvote = request.POST.get('isUpvote')
vote, created = Vote.objects.get_or_create(user_voted=user_voted)
vote.isUp = isUpvote
vote.save()
when I save this vote and check my Django admin page, "isUpvote" is ALWAYS
set to True whether true or false is passed from javascript. So what is
the best way to convert javascript's "true/false" boolean value to
Django's "True/False" value???
Thanks!!