diff -r c821e3a54930 Lib/tabnanny.py
--- a/Lib/tabnanny.py	Mon Aug 15 14:28:46 2011 +0300
+++ b/Lib/tabnanny.py	Mon Aug 22 16:04:49 2011 +1000
@@ -125,6 +125,9 @@
             if filename_only: print(file)
             else: print(file, badline, repr(line))
         return
+    
+    finally:
+        f.close()
 
     if verbose:
         print("%r: Clean bill of health." % (file,))