response.py 文件源码

def __init__(self, url, *args, **kwargs):
        real_url = kwargs.pop('real_url', None)
        if real_url is not None:
            self.real_url = real_url
        else:
            self.real_url = None
            # FIXME: create a .request @property with a setter?
            # Scrapy doesn't pass request to Response constructor;
            # it is worked around in SplashMiddleware.
            request = kwargs['request']
            splash_args = self._splash_args(request)
            _url = splash_args.get('url')
            if _url is not None:
                self.real_url = url
                url = _url
        super(_SplashResponseMixin, self).__init__(url, *args, **kwargs)