Django snippets

from django.template import Template, TemplateEncodingError,
StringOrigin, Lexer, Parser
from django.utils.encoding import smart_unicode

class TestableTemplate(Template):
    def __init__(self, template_string, origin=None,
            name='<Unknown Template>', libraries=[]):
        try:
            template_string = smart_unicode(template_string)
        except UnicodeDecodeError:
            raise TemplateEncodingError("Templates can only be
constructed from unicode or UTF-8 strings.")
        origin = StringOrigin(template_string)
        self.nodelist = my_compile_string(template_string, origin,
libraries)
        self.name = name

def my_compile_string(template_string, origin, libraries=[]):
    "Compiles template_string into NodeList ready for rendering"
    lexer = Lexer(template_string, origin)
    parser = Parser(lexer.tokenize())
    for lib in libraries:
        parser.add_library(lib)
    return parser.parse()