loaders.py 文件源码

def load(self, environment, name, globals=None):
        key = self.get_template_key(name)
        module = '%s.%s' % (self.package_name, key)
        mod = getattr(self.module, module, None)
        if mod is None:
            try:
                mod = __import__(module, None, None, ['root'])
            except ImportError:
                raise TemplateNotFound(name)

            # remove the entry from sys.modules, we only want the attribute
            # on the module object we have stored on the loader.
            sys.modules.pop(module, None)

        return environment.template_class.from_module_dict(
            environment, mod.__dict__, globals)