Patch #435971: UTF-7 codec by Brian Quinlan.
diff --git a/Lib/encodings/aliases.py b/Lib/encodings/aliases.py
index c3c49b4..65d8fef 100644
--- a/Lib/encodings/aliases.py
+++ b/Lib/encodings/aliases.py
@@ -14,6 +14,10 @@
     'latin': 'latin_1',
     'latin1': 'latin_1',
     
+    # UTF-7
+    'utf7': 'utf_7',
+    'u7': 'utf_7',
+    
     # UTF-8
     'utf': 'utf_8',
     'utf8': 'utf_8',