csrf

from django.core.context_processors import csrf
from django.shortcuts import render_to_response

def my_view(request):
c = {}
c.update(csrf(request))
# ... view code here
return render_to_response("a_template.html", c)

from django.views.decorators.csrf import csrf_protect
from django.shortcuts import render

@csrf_protect
def my_view(request):
c = {}
# ...
return render(request, "a_template.html", c)