SF patch 1631942 by Collin Winter:
(a) "except E, V" -> "except E as V"
(b) V is now limited to a simple name (local variable)
(c) V is now deleted at the end of the except block
diff --git a/Lib/test/test_subprocess.py b/Lib/test/test_subprocess.py
index 64f8d40..fcc0f45 100644
--- a/Lib/test/test_subprocess.py
+++ b/Lib/test/test_subprocess.py
@@ -67,7 +67,7 @@
         try:
             subprocess.check_call([sys.executable, "-c",
                                    "import sys; sys.exit(47)"])
-        except subprocess.CalledProcessError, e:
+        except subprocess.CalledProcessError as e:
             self.assertEqual(e.returncode, 47)
         else:
             self.fail("Expected CalledProcessError")
@@ -475,7 +475,7 @@
             try:
                 p = subprocess.Popen([sys.executable, "-c", ""],
                                  cwd="/this/path/does/not/exist")
-            except OSError, e:
+            except OSError as e:
                 # The attribute child_traceback should contain "os.chdir"
                 # somewhere.
                 self.assertNotEqual(e.child_traceback.find("os.chdir"), -1)