PEP-0318, @decorator-style. In Guido's words:
"@ seems the syntax that everybody can hate equally"
Implementation by Mark Russell, from SF #979728.
diff --git a/Lib/token.py b/Lib/token.py
index f75412c..c4db6c5 100755
--- a/Lib/token.py
+++ b/Lib/token.py
@@ -60,9 +60,10 @@
 DOUBLESTAREQUAL = 47
 DOUBLESLASH = 48
 DOUBLESLASHEQUAL = 49
-OP = 50
-ERRORTOKEN = 51
-N_TOKENS = 52
+AT = 50
+OP = 51
+ERRORTOKEN = 52
+N_TOKENS = 53
 NT_OFFSET = 256
 #--end constants--