[twitter] fix 'logout' (#1719)

delete 'auth_token' cookie and cookies.txt path

docs/configuration.rst

@@ -1906,6 +1906,16 @@ Description
     <https://help.twitter.com/en/using-twitter/twitter-conversations>`__.
 
 
+extractor.twitter.logout
+------------------------
+Type
+    ``bool``
+Default
+    ``false``
+Description
+    Logout and retry as guest when access to another user's Tweets is blocked.
+
+
 extractor.twitter.quoted
 ------------------------
 Type

gallery_dl/extractor/twitter.py

@@ -768,12 +768,14 @@ class TwitterAPI():
             if response.status_code == 401 and \
                     "have been blocked from viewing" in msg:
                 # account blocked
-                extr = extr = self.extractor
+                extr = self.extractor
                 if self.headers["x-twitter-auth-type"] and \
                         extr.config("logout"):
                     guest_token = self._guest_token()
                     extr.session.cookies.set(
                         "gt", guest_token, domain=extr.cookiedomain)
+                    extr._cookiefile = None
+                    del extr.session.cookies["auth_token"]
                     self.headers["x-guest-token"] = guest_token
                     self.headers["x-twitter-auth-type"] = None
                     extr.log.info("Retrying API request as guest")