From 779d05dc02ac187729dda3431547f48994586029 Mon Sep 17 00:00:00 2001
From: yt2b <reinventing.the.wheels@gmail.com>
Date: Fri, 30 Dec 2022 09:34:19 +0900
Subject: [PATCH 1/2] Fix hex prefix

---
 vm/src/format.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vm/src/format.rs b/vm/src/format.rs
index 1d4ab6c00..b01773e72 100644
--- a/vm/src/format.rs
+++ b/vm/src/format.rs
@@ -456,7 +456,7 @@ impl FormatSpec {
                 Some(FormatType::Binary) => "0b",
                 Some(FormatType::Octal) => "0o",
                 Some(FormatType::HexLower) => "0x",
-                Some(FormatType::HexUpper) => "0x",
+                Some(FormatType::HexUpper) => "0X",
                 _ => "",
             }
         } else {

From f07e03cde7a8452f9711da23602b12db37bcfa8b Mon Sep 17 00:00:00 2001
From: yt2b <reinventing.the.wheels@gmail.com>
Date: Fri, 30 Dec 2022 20:03:20 +0900
Subject: [PATCH 2/2] Add test

---
 extra_tests/snippets/builtin_format.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/extra_tests/snippets/builtin_format.py b/extra_tests/snippets/builtin_format.py
index a30f300d4..4fdaeb3c8 100644
--- a/extra_tests/snippets/builtin_format.py
+++ b/extra_tests/snippets/builtin_format.py
@@ -28,3 +28,4 @@ assert f'{1024:_}' == '1_024'
 assert f'{65536:,}' == '65,536'
 assert f'{4294967296:,}' == '4,294,967,296'
 assert 'F' == "{0:{base}}".format(15, base="X")
+assert f'{255:#X}' == "0XFF"