shorter

scrapy/pqueues.py

@@ -73,10 +73,10 @@ class ScrapyPriorityQueue(object):
             return
         q = self.queues[self.curprio]
         m = q.pop()
-        if len(q) == 0:
+        if not q:
             del self.queues[self.curprio]
             q.close()
-            prios = [p for p, q in self.queues.items() if len(q) > 0]
+            prios = [p for p, q in self.queues.items() if q]
             self.curprio = min(prios) if prios else None
         return m