diff -r 4ebe1ede981e Lib/lib-tk/Tkinter.py
--- a/Lib/lib-tk/Tkinter.py	Wed Nov 07 09:41:28 2012 +0100
+++ b/Lib/lib-tk/Tkinter.py	Fri Nov 09 14:51:51 2012 -0600
@@ -1709,7 +1709,9 @@
         self.tk = _tkinter.create(screenName, baseName, className, interactive, wantobjects, useTk, sync, use)
         if useTk:
             self._loadtk()
-        self.readprofile(baseName, className)
+        if not sys.flags.ignore_environment:
+            # Issue16248: Honor the -E flag to avoid code injection.
+            self.readprofile(baseName, className)
     def loadtk(self):
         if not self._tkloaded:
             self.tk.loadtk()