Change to the way the builtin next is checked for, to avoid

confusing pyflakes/pylint.

eventlet/greenpool.py

@@ -1,5 +1,12 @@
 import itertools
 import traceback
+import __builtin__
+if not hasattr(__builtin__, 'next'):
+    def next(it):
+        try:
+            return it.next()
+        except AttributeError:
+            raise TypeError("%s object is not an iterator" % type(it))
 
 from eventlet import event
 from eventlet import greenthread
@@ -11,15 +18,6 @@ __all__ = ['GreenPool', 'GreenPile']
 
 DEBUG = False
 
-try:
-    next
-except NameError:
-    def next(it):
-        try:
-            return it.next()
-        except AttributeError:
-            raise TypeError("%s object is not an iterator" % type(it))
-
 class GreenPool(object):
     """The GreenPool class is a pool of green threads.
     """