Django templatetags remote_include

@register.tag(name='remote_include')
def do_remote_include(parser, token):
    """
    Remote include of an URL, replacing some variables, and caching the output for a certain amount of seconds

    {% remote_include http://remote.com/test/%s/%s/ 360 arg_1 arg_2 %}
    """
    bits = token.contents.split()[1:]
    try:
        url = bits.pop(0)
    except:
        raise ValueError('remote_include requires at least an URL parameter')
    try:
        cache_time = int(bits.pop(0))
    except ValueError:
        cache_time = 60
    try:
        args = bits[:]
    except:
        args = list()

    return RemoteIncludeNode(url, cache_time, args)