[py3] Always pass bytes to hashlib.md5.

from django.template import Library, Node, TemplateSyntaxError, Variable, VariableDoesNotExist

from django.template import resolve_variable

from django.core.cache import cache

from django.utils.encoding import smart_bytes

from django.utils.http import urlquote

register = Library()

            expire_time = int(expire_time)

        except (ValueError, TypeError):

            raise TemplateSyntaxError('"cache" tag got a non-integer timeout value: %r' % expire_time)

        # Build a unicode key for this fragment and all vary-on's.

        args = hashlib.md5(':'.join([urlquote(resolve_variable(var, context)) for var in self.vary_on]))

        # Build a key for this fragment and all vary-on's.

        key = smart_bytes(':'.join([urlquote(resolve_variable(var, context)) for var in self.vary_on]))

        args = hashlib.md5(key)

        cache_key = 'template.cache.%s.%s' % (self.fragment_name, args.hexdigest())

        value = cache.get(cache_key)

        if value is None: