From db0a0dad3cd023ab4b552069c5ff5e01e557290f Mon Sep 17 00:00:00 2001
From: Vostretsov Nikita <whalebot.helmsman@gmail.com>
Date: Tue, 16 Jul 2019 23:30:09 +0500
Subject: [PATCH] single place for easier customization

---
 scrapy/pqueues.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/scrapy/pqueues.py b/scrapy/pqueues.py
index e6cd96d43..dcd1ee9f1 100644
--- a/scrapy/pqueues.py
+++ b/scrapy/pqueues.py
@@ -56,8 +56,11 @@ class ScrapyPriorityQueue(object):
         return self.downstream_queue_cls(self.crawler,
                                          self.key + '/' + str(key))
 
+    def priority(self, request):
+        return -request.priority
+
     def push(self, request):
-        priority = -request.priority
+        priority = self.priority(request)
         if priority not in self.queues:
             self.queues[priority] = self.qfactory(priority)
         q = self.queues[priority]