Issues 2186 and 2187. Move map() from itertools to builtins.
diff --git a/Lib/test/test_heapq.py b/Lib/test/test_heapq.py
index 8ae1637..7969d6e 100644
--- a/Lib/test/test_heapq.py
+++ b/Lib/test/test_heapq.py
@@ -260,10 +260,10 @@
     def __next__(self):
         raise StopIteration
 
-from itertools import chain, imap
+from itertools import chain, map
 def L(seqn):
     'Test multiple tiers of iterators'
-    return chain(imap(lambda x:x, R(Ig(G(seqn)))))
+    return chain(map(lambda x:x, R(Ig(G(seqn)))))
 
 class TestErrorHandling(unittest.TestCase):
     # only for C implementation