PEP 3107 - Function Annotations thanks to Tony Lownds
diff --git a/Lib/token.py b/Lib/token.py
index 5f8d53a..2770cfd 100755
--- a/Lib/token.py
+++ b/Lib/token.py
@@ -60,9 +60,10 @@
 DOUBLESLASH = 48
 DOUBLESLASHEQUAL = 49
 AT = 50
-OP = 51
-ERRORTOKEN = 52
-N_TOKENS = 53
+RARROW = 51
+OP = 52
+ERRORTOKEN = 53
+N_TOKENS = 54
 NT_OFFSET = 256
 #--end constants--