def main(request):
person_list = Person.objects.all()
paginator = Paginator(person_list, 5)
page_number = request.GET.get('page')
persons = paginator.get_page(page_number)
form = UpdateForm(
request.POST or None, instance = )
context = {'persons': persons,'form':form }
return render(request, 'mailer/list.html', context)