Issue #19572: More silently skipped tests explicitly skipped.
diff --git a/Lib/test/test_imp.py b/Lib/test/test_imp.py
index 77e44be..1bdc47a 100644
--- a/Lib/test/test_imp.py
+++ b/Lib/test/test_imp.py
@@ -2,7 +2,12 @@
 import unittest
 from test import test_support
 
+try:
+    import thread
+except ImportError:
+    thread = None
 
+@unittest.skipUnless(thread, 'threading not available')
 class LockTests(unittest.TestCase):
 
     """Very basic test of import lock functions."""
@@ -68,13 +73,8 @@
 def test_main():
     tests = [
         ReloadTests,
+        LockTests,
     ]
-    try:
-        import thread
-    except ImportError:
-        pass
-    else:
-        tests.append(LockTests)
     test_support.run_unittest(*tests)
 
 if __name__ == "__main__":