From 84d939fb06ae36faf2a529a62aaf799474473417 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Tue, 23 Apr 2019 12:17:34 +0530
Subject: [PATCH] py3: Avoid chained exception

---
 src/calibre/web/feeds/news.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/calibre/web/feeds/news.py b/src/calibre/web/feeds/news.py
index cfaa91245a..ea5617c4d1 100644
--- a/src/calibre/web/feeds/news.py
+++ b/src/calibre/web/feeds/news.py
@@ -1187,12 +1187,16 @@ class BasicNewsRecipe(Recipe):
 
     def build_index(self):
         self.report_progress(0, _('Fetching feeds...'))
+        feeds = None
         try:
             feeds = feeds_from_index(self.parse_index(), oldest_article=self.oldest_article,
                                      max_articles_per_feed=self.max_articles_per_feed,
                                      log=self.log)
             self.report_progress(0, _('Got feeds from index page'))
         except NotImplementedError:
+            pass
+
+        if feeds is None:
             feeds = self.parse_feeds()
 
         if not feeds: