diff -r 336137a359ae Lib/test/disutil.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Lib/test/disutil.py	Fri Mar 11 16:37:49 2011 -0500
@@ -0,0 +1,17 @@
+import dis
+import sys
+from io import StringIO
+
+def disassemble(func):
+    f = StringIO()
+    tmp = sys.stdout
+    sys.stdout = f
+    dis.dis(func)
+    sys.stdout = tmp
+    result = f.getvalue()
+    f.close()
+    return result
+
+def dis_single(line):
+    return disassemble(compile(line, '', 'single'))
+
diff -r 336137a359ae Lib/test/test_compile.py
--- a/Lib/test/test_compile.py	Fri Mar 11 10:27:14 2011 -0500
+++ b/Lib/test/test_compile.py	Fri Mar 11 16:37:49 2011 -0500
@@ -2,6 +2,7 @@
 import sys
 import _ast
 from test import support
+from test.disutil import disassemble
 
 class TestSpecifics(unittest.TestCase):
 
@@ -433,6 +434,16 @@
         ast.body = [_ast.BoolOp()]
         self.assertRaises(TypeError, compile, ast, '<ast>', 'exec')
 
+    def test_if_no_else(self):
+        def f1(x):
+            if x:
+                x = 1
+            return x
+
+        asm = disassemble(f1)
+        for elem in ('JUMP_FORWARD', 'JUMP_ABSOLUTE'):
+            self.assertNotIn(elem, asm)
+
 
 def test_main():
     support.run_unittest(TestSpecifics)
diff -r 336137a359ae Lib/test/test_dis.py
--- a/Lib/test/test_dis.py	Fri Mar 11 10:27:14 2011 -0500
+++ b/Lib/test/test_dis.py	Fri Mar 11 16:37:49 2011 -0500
@@ -4,7 +4,7 @@
 import unittest
 import sys
 import dis
-import io
+from test.disutil import disassemble
 
 
 def _f(a):
@@ -139,12 +139,7 @@
 
 class DisTests(unittest.TestCase):
     def do_disassembly_test(self, func, expected):
-        s = io.StringIO()
-        save_stdout = sys.stdout
-        sys.stdout = s
-        dis.dis(func)
-        sys.stdout = save_stdout
-        got = s.getvalue()
+        got = disassemble(func)
         # Trim trailing blanks (if any).
         lines = got.split('\n')
         lines = [line.rstrip() for line in lines]
diff -r 336137a359ae Lib/test/test_peepholer.py
--- a/Lib/test/test_peepholer.py	Fri Mar 11 10:27:14 2011 -0500
+++ b/Lib/test/test_peepholer.py	Fri Mar 11 16:37:49 2011 -0500
@@ -1,22 +1,8 @@
-import dis
+from test.disutil import disassemble, dis_single
 import re
 import sys
-from io import StringIO
 import unittest
 
-def disassemble(func):
-    f = StringIO()
-    tmp = sys.stdout
-    sys.stdout = f
-    dis.dis(func)
-    sys.stdout = tmp
-    result = f.getvalue()
-    f.close()
-    return result
-
-def dis_single(line):
-    return disassemble(compile(line, '', 'single'))
-
 class TestTranforms(unittest.TestCase):
 
     def test_unot(self):