__init__.py 文件源码

def load_template_source(self, template_name, template_dirs=None):
        if not self._valid_template(template_name):
            raise TemplateDoesNotExist(template_name)

        try:
            template = get_env().get_template(template_name)
        except jinja2.TemplateNotFound:
            raise TemplateDoesNotExist(template_name)

        with open(template.filename, 'rb') as fp:
            return (fp.read().decode(settings.FILE_CHARSET), template.filename)