jinja2.py 文件源码

def set_jinja2(jinja2, key=_registry_key, app=None):
    """Sets an instance of :class:`Jinja2` in the app registry.

    :param store:
        An instance of :class:`Jinja2`.
    :param key:
        The key used to retrieve the instance from the registry. A default
        is used if it is not set.
    :param request:
        A :class:`webapp2.WSGIApplication` instance used to retrieve the
        instance. The active app is used if it is not set.
    """
    app = app or webapp2.get_app()
    app.registry[key] = jinja2