check for empty str

linklist.py

@@ -12,7 +12,8 @@ class LinkList():
             #print(feed["bozo"]) FIXME: If bozo==1 => error
             self.links=[i["link"] for i in feed["items"]]
         else:
-            if selector is None:
+
+            if selector is None or selector =="":
                 #s=newspaper.build(url,language="en",memoize_articles=False) #memoize puede salvarme la vida
                 s = newspaper.Source(url,memoize_articles=False, request_timeout=10)
                 s.download()