Update Tools/build/generate_token.py for token.py

Author: vstinner

Tools/build/generate_token.py

@@ -269,14 +269,15 @@ def make_rst(infile, outfile='Doc/library/token-list.inc',
 # Special definitions for cooperation with parser
 NT_OFFSET = %d
 
-tok_name = {value: name
-            for name, value in globals().items()
-            if isinstance(value, int) and not name.startswith('_')}
+tok_name = frozendict({
+    value: name
+    for name, value in globals().items()
+    if isinstance(value, int) and not name.startswith('_')})
 __all__.extend(tok_name.values())
 
-EXACT_TOKEN_TYPES = {
+EXACT_TOKEN_TYPES = frozendict({
 %s
-}
+})
 
 def ISTERMINAL(x: int) -> bool:
     return x < NT_OFFSET