#10907: Warn OS X 10.6 IDLE users to use ActiveState Tcl/Tk 8.5,

rather than the currently problematic Apple-supplied one,
        when running with the 64-/32-bit installer variant.

Lib/idlelib/PyShell.py

@@ -1417,6 +1417,13 @@ def main():
             shell.interp.prepend_syspath(script)
             shell.interp.execfile(script)
 
+    # Check for problematic OS X Tk versions and print a warning message
+    # in the IDLE shell window; this is less intrusive than always opening
+    # a separate window.
+    tkversionwarning = macosxSupport.tkVersionWarning(root)
+    if tkversionwarning:
+        shell.interp.runcommand(''.join(("print('", tkversionwarning, "')")))
+
     root.mainloop()
     root.destroy()