Fix Python3 compatibility issue in filterfalse

--HG--
branch : distribute
extra : rebase_source : 71e3e89efe6483924a07e7f9819ee86f08dbf1f2
extra : histedit_source : fa75c7bc174b248c74da7b4efd5f6f05c36b6ae4

2 files changed, 5 insertions, 2 deletions

diff --git a/setuptools/compat.py b/setuptools/compat.py
index 05417c6e..e2f64de2 100644
--- a/setuptools/compat.py
+++ b/setuptools/compat.py
@@ -1,4 +1,5 @@
 import sys
+import itertools
 
 if sys.version_info[0] < 3:
     PY3 = False
@@ -30,6 +31,7 @@ if sys.version_info[0] < 3:
     from urllib2 import urlopen, HTTPError, URLError, unquote, splituser
     from urlparse import urlparse, urlunparse, urljoin
     xrange = xrange
+    filterfalse = itertools.ifilterfalse
 
     def exec_(code, globs=None, locs=None):
         if globs is None:
@@ -72,6 +74,7 @@ else:
     from urllib.request import urlopen, url2pathname
     from urllib.parse import urlparse, urlunparse, unquote, splituser, urljoin
     xrange = range
+    filterfalse = itertools.filterfalse
 
     def execfile(fn, globs=None, locs=None):
         if globs is None:
diff --git a/setuptools/package_index.py b/setuptools/package_index.py
index 85a1deeb..1e2a086d 100755
--- a/setuptools/package_index.py
+++ b/setuptools/package_index.py
@@ -1,6 +1,5 @@
 """PyPI and direct package downloading"""
 import sys, os.path, re, shutil, random, socket
-import itertools
 import base64
 from pkg_resources import *
 from distutils import log
@@ -9,6 +8,7 @@ from setuptools.compat import (urllib2, httplib, StringIO, HTTPError,
                                urlparse, urlunparse, unquote, splituser,
                                url2pathname, name2codepoint,
                                unichr, urljoin)
+from setuptools.compat import filterfalse
 try:
     from hashlib import md5
 except ImportError:
@@ -148,7 +148,7 @@ def unique_everseen(iterable, key=None):
     seen = set()
     seen_add = seen.add
     if key is None:
-        for element in itertools.ifilterfalse(seen.__contains__, iterable):
+        for element in filterfalse(seen.__contains__, iterable):
             seen_add(element)
             yield element
     else: