Whitespace normalization.  Leaving tokenize_tests.py alone for now.
diff --git a/Lib/test/testcodec.py b/Lib/test/testcodec.py
index 0cf9b07..5da754d 100644
--- a/Lib/test/testcodec.py
+++ b/Lib/test/testcodec.py
@@ -14,14 +14,14 @@
     def encode(self,input,errors='strict'):
 
         return codecs.charmap_encode(input,errors,encoding_map)
-        
+
     def decode(self,input,errors='strict'):
 
         return codecs.charmap_decode(input,errors,decoding_map)
 
 class StreamWriter(Codec,codecs.StreamWriter):
     pass
-        
+
 class StreamReader(Codec,codecs.StreamReader):
     pass
 
@@ -46,4 +46,3 @@
 encoding_map = {}
 for k,v in decoding_map.items():
     encoding_map[v] = k
-