Index: Lib/test/test_support.py
===================================================================
--- Lib/test/test_support.py	(revision 61589)
+++ Lib/test/test_support.py	(working copy)
@@ -37,6 +37,13 @@
 and unexpected skips.
 """
 
+class OptionalImportFailed(TestSkipped):
+ """Test skipped because an optional import failed.
+
+ This is raised when a test calls optional_import() for a name that
+ can't be imported.
+ """
+
 verbose = 1 # Flag set to 0 by regrtest.py
 use_resources = None # Flag set to [] by regrtest.py
 max_memuse = 0 # Disable bigmem tests (they will still be run with
@@ -288,7 +295,14 @@
 fn, _ = urllib.urlretrieve(url, filename)
 return open(fn)
 
+def optional_import(name, fromlist=[]):
+ """Tries to import name; the test is skipped on ImportError."""
+ try:
+ return __import__(name, fromlist=fromlist)
+ except ImportError:
+ raise OptionalImportFailed("optional import of '%s' failed." % name)
 
+
 class WarningMessage(object):
 "Holds the result of the latest showwarning() call"
 def __init__(self):
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