PEP 3114: rename .next() to .__next__() and add next() builtin.
diff --git a/Lib/test/test_heapq.py b/Lib/test/test_heapq.py
index 156c835..dbbfcb0 100644
--- a/Lib/test/test_heapq.py
+++ b/Lib/test/test_heapq.py
@@ -180,7 +180,7 @@
         self.i = 0
     def __iter__(self):
         return self
-    def next(self):
+    def __next__(self):
         if self.i >= len(self.seqn): raise StopIteration
         v = self.seqn[self.i]
         self.i += 1
@@ -200,14 +200,14 @@
     def __init__(self, seqn):
         self.seqn = seqn
         self.i = 0
-    def next(self):
+    def __next__(self):
         if self.i >= len(self.seqn): raise StopIteration
         v = self.seqn[self.i]
         self.i += 1
         return v
 
 class N:
-    'Iterator missing next()'
+    'Iterator missing __next__()'
     def __init__(self, seqn):
         self.seqn = seqn
         self.i = 0
@@ -221,7 +221,7 @@
         self.i = 0
     def __iter__(self):
         return self
-    def next(self):
+    def __next__(self):
         3 // 0
 
 class S:
@@ -230,7 +230,7 @@
         pass
     def __iter__(self):
         return self
-    def next(self):
+    def __next__(self):
         raise StopIteration
 
 from itertools import chain, imap