replace obsolete 'exceptions' implicit by 'warnings'
diff --git a/Tools/freeze/freeze.py b/Tools/freeze/freeze.py
index 8d1ffdf..c717a36 100755
--- a/Tools/freeze/freeze.py
+++ b/Tools/freeze/freeze.py
@@ -201,7 +201,7 @@
 
     # modules that are imported by the Python runtime
     implicits = []
-    for module in ('site', 'exceptions',):
+    for module in ('site', 'warnings',):
         if module not in exclude:
             implicits.append(module)