diff --git a/scrapy/contrib/feedexport.py b/scrapy/contrib/feedexport.py
index 941f9633e..92664220c 100644
--- a/scrapy/contrib/feedexport.py
+++ b/scrapy/contrib/feedexport.py
@@ -10,7 +10,7 @@ from datetime import datetime
 from six.moves.urllib.parse import urlparse
 from ftplib import FTP
 
-from zope.interface import Interface, implements
+from zope.interface import Interface, implementer
 from twisted.internet import defer, threads
 from w3lib.url import file_uri_to_path
 
@@ -35,10 +35,9 @@ class IFeedStorage(Interface):
         """Store the given file stream"""
 
 
+@implementer(IFeedStorage)
 class BlockingFeedStorage(object):
 
-    implements(IFeedStorage)
-
     def open(self, spider):
         return TemporaryFile(prefix='feed-')
 
@@ -49,10 +48,9 @@ class BlockingFeedStorage(object):
         raise NotImplementedError
 
 
+@implementer(IFeedStorage)
 class StdoutFeedStorage(object):
 
-    implements(IFeedStorage)
-
     def __init__(self, uri, _stdout=sys.stdout):
         self._stdout = _stdout
 
@@ -62,9 +60,9 @@ class StdoutFeedStorage(object):
     def store(self, file):
         pass
 
-class FileFeedStorage(object):
 
-    implements(IFeedStorage)
+@implementer(IFeedStorage)
+class FileFeedStorage(object):
 
     def __init__(self, uri):
         self.path = file_uri_to_path(uri)
@@ -78,6 +76,7 @@ class FileFeedStorage(object):
     def store(self, file):
         file.close()
 
+
 class S3FeedStorage(BlockingFeedStorage):
 
     def __init__(self, uri):
@@ -131,6 +130,7 @@ class SpiderSlot(object):
         self.uri = uri
         self.itemcount = 0
 
+
 class FeedExporter(object):
 
     def __init__(self, settings):
diff --git a/tests/py3-ignores.txt b/tests/py3-ignores.txt
index ea69e21de..05adb9429 100644
--- a/tests/py3-ignores.txt
+++ b/tests/py3-ignores.txt
@@ -5,7 +5,6 @@ tests/test_command_shell.py
 tests/test_commands.py
 tests/test_command_version.py
 tests/test_contrib_exporter.py
-tests/test_contrib_feedexport.py
 tests/test_contrib_linkextractors.py
 tests/test_contrib_loader.py
 tests/test_crawl.py
@@ -92,7 +91,6 @@ scrapy/contrib/downloadermiddleware/cookies.py
 scrapy/contrib/downloadermiddleware/ajaxcrawl.py
 scrapy/contrib/statsmailer.py
 scrapy/contrib/memusage.py
-scrapy/contrib/feedexport.py
 scrapy/commands/deploy.py
 scrapy/commands/bench.py
 scrapy/telnet.py
diff --git a/tests/test_contrib_feedexport.py b/tests/test_contrib_feedexport.py
index bf4943bfa..7e2fc0f66 100644
--- a/tests/test_contrib_feedexport.py
+++ b/tests/test_contrib_feedexport.py
@@ -41,10 +41,11 @@ class FileFeedStorageTest(unittest.TestCase):
     def _assert_stores(self, storage, path):
         spider = Spider("default")
         file = storage.open(spider)
-        file.write("content")
+        file.write(b"content")
         yield storage.store(file)
         self.failUnless(os.path.exists(path))
-        self.failUnlessEqual(open(path).read(), "content")
+        with open(path, 'rb') as fp:
+            self.failUnlessEqual(fp.read(), b"content")
 
 
 class FTPFeedStorageTest(unittest.TestCase):
@@ -65,10 +66,12 @@ class FTPFeedStorageTest(unittest.TestCase):
         file.write(b"content")
         yield storage.store(file)
         self.failUnless(os.path.exists(path))
-        self.failUnlessEqual(open(path).read(), b"content")
+        with open(path, 'rb') as fp:
+            self.failUnlessEqual(fp.read(), b"content")
         # again, to check s3 objects are overwritten
         yield storage.store(BytesIO(b"new content"))
-        self.failUnlessEqual(open(path).read(), b"new content")
+        with open(path, 'rb') as fp:
+            self.failUnlessEqual(fp.read(), b"new content")
 
 
 class S3FeedStorageTest(unittest.TestCase):