diff -r 7268838063e1 Lib/test/test_support.py
--- a/Lib/test/test_support.py	Tue Nov 05 00:24:05 2013 +1000
+++ b/Lib/test/test_support.py	Mon Nov 04 15:07:19 2013 -0600
@@ -26,6 +26,18 @@
 except ImportError:
     thread = None
 
+# Issue #10652: Do Tkinter's environment fixing to find the Tcl/Tk/Tix
+# libraries early and only once to avoid issues with test_tcl, test_tk, etc.
+# not finding init.tcl.  We only want the side effect of this import, and it
+# doesn't matter if it fails because that will mean the tests wouldn't have
+# worked anyway.
+try:
+    import FixTk
+except Exception:
+    pass
+else:
+    del FixTk
+
 __all__ = ["Error", "TestFailed", "ResourceDenied", "import_module",
            "verbose", "use_resources", "max_memuse", "record_original_stdout",
            "get_original_stdout", "unload", "unlink", "rmtree", "forget",