From 4372a05ab0b4ee2b3c5bf13e07508653f257e418 Mon Sep 17 00:00:00 2001
From: "Miss Islington (bot)"
 <31488909+miss-islington@users.noreply.github.com>
Date: Mon, 29 Sep 2025 22:11:41 +0200
Subject: [PATCH] [3.14] gh-134953: Make the True/False/None check more
 efficient (GH-138931) (#138939)

---
 Lib/_pyrepl/utils.py | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/Lib/_pyrepl/utils.py b/Lib/_pyrepl/utils.py
index d32fce591fad..99b5c5aaf39e 100644
--- a/Lib/_pyrepl/utils.py
+++ b/Lib/_pyrepl/utils.py
@@ -20,6 +20,7 @@ ANSI_ESCAPE_SEQUENCE = re.compile(r"\x1b\[[ -@]*[A-~]")
 ZERO_WIDTH_BRACKET = re.compile(r"\x01.*?\x02")
 ZERO_WIDTH_TRANS = str.maketrans({"\x01": "", "\x02": ""})
 IDENTIFIERS_AFTER = {"def", "class"}
+KEYWORD_CONSTANTS = {"True", "False", "None"}
 BUILTINS = {str(name) for name in dir(builtins) if not name.startswith('_')}
 
 
@@ -196,12 +197,12 @@ def gen_colors_from_token_stream(
                     is_def_name = False
                     span = Span.from_token(token, line_lengths)
                     yield ColorSpan(span, "definition")
-                elif token.string in ("True", "False", "None"):
-                    span = Span.from_token(token, line_lengths)
-                    yield ColorSpan(span, "keyword_constant")
                 elif keyword.iskeyword(token.string):
+                    span_cls = "keyword"
+                    if token.string in KEYWORD_CONSTANTS:
+                        span_cls = "keyword_constant"
                     span = Span.from_token(token, line_lengths)
-                    yield ColorSpan(span, "keyword")
+                    yield ColorSpan(span, span_cls)
                     if token.string in IDENTIFIERS_AFTER:
                         is_def_name = True
                 elif (
-- 
2.47.3