Rename scrapy/dupefilter.py to scrapy/dupefilters.py

docs/topics/settings.rst

@@ -487,7 +487,7 @@ If you want to disable it set to 0.
 DUPEFILTER_CLASS
 ----------------
 
-Default: ``'scrapy.dupefilter.RFPDupeFilter'``
+Default: ``'scrapy.dupefilters.RFPDupeFilter'``
 
 The class used to detect and filter duplicate requests.
 

scrapy/settings/default_settings.py

@@ -100,7 +100,7 @@ DOWNLOADER_MIDDLEWARES_BASE = {
 
 DOWNLOADER_STATS = True
 
-DUPEFILTER_CLASS = 'scrapy.dupefilter.RFPDupeFilter'
+DUPEFILTER_CLASS = 'scrapy.dupefilters.RFPDupeFilter'
 
 try:
     EDITOR = os.environ['EDITOR']

tests/py3-ignores.txt

@@ -25,7 +25,7 @@ tests/test_downloadermiddleware_retry.py
 tests/test_downloadermiddleware_robotstxt.py
 tests/test_downloadermiddleware_stats.py
 tests/test_downloadermiddleware_useragent.py
-tests/test_dupefilter.py
+tests/test_dupefilters.py
 tests/test_engine.py
 tests/test_http_cookies.py
 tests/test_http_request.py

tests/test_dupefilter.py → tests/test_dupefilters.py

 import hashlib
 import unittest
 
-from scrapy.dupefilter import RFPDupeFilter
+from scrapy.dupefilters import RFPDupeFilter
 from scrapy.http import Request