_clientcookie.py 文件源码

def extract_cookies(self, response, request):
        """Extract cookies from response, where allowable given the request.

        Look for allowable Set-Cookie: and Set-Cookie2: headers in the response
        object passed as argument.  Any of these headers that are found are
        used to update the state of the object (subject to the policy.set_ok
        method's approval).

        The response object (usually be the result of a call to
        mechanize.urlopen, or similar) should support an info method, which
        returns a mimetools.Message object (in fact, the 'mimetools.Message
        object' may be any object that provides a getheaders method).

        The request object (usually a mechanize.Request instance) must support
        the methods get_full_url, get_type, get_host, and is_unverifiable, as
        documented by mechanize, and the port attribute (the port number).  The
        request is used to set default values for cookie-attributes as well as
        for checking that the cookie is OK to be set.

        """
        debug("extract_cookies: %s", response.info())
        self._policy._now = self._now = int(time.time())

        for cookie in self._make_cookies(response, request):
            if cookie.expires is not None and cookie.expires <= self._now:
                # Expiry date in past is request to delete cookie.  This can't be
                # in DefaultCookiePolicy, because can't delete cookies there.
                try:
                    self.clear(cookie.domain, cookie.path, cookie.name)
                except KeyError:
                    pass
                debug("Expiring cookie, domain='%s', path='%s', name='%s'",
                      cookie.domain, cookie.path, cookie.name)
            elif self._policy.set_ok(cookie, request):
                debug(" setting cookie: %s", cookie)
                self.set_cookie(cookie)