From 48a03076a32816b76b384b611def51bf5cc8fa53 Mon Sep 17 00:00:00 2001
From: Eric Traut <eric@traut.com>
Date: Sun, 16 Jun 2024 22:41:09 +0200
Subject: [PATCH] Fixed bug that resulted in the incorrect synthesis of
 `__dataclass_fields__` for named tuples. This addresses #8152.

---
 packages/pyright-internal/src/analyzer/dataClasses.ts | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/packages/pyright-internal/src/analyzer/dataClasses.ts b/packages/pyright-internal/src/analyzer/dataClasses.ts
index 792324455..4d7c45994 100644
--- a/packages/pyright-internal/src/analyzer/dataClasses.ts
+++ b/packages/pyright-internal/src/analyzer/dataClasses.ts
@@ -659,10 +659,13 @@ export function synthesizeDataClassMethods(
             )
         );
     }
-    symbolTable.set(
-        '__dataclass_fields__',
-        Symbol.createWithType(SymbolFlags.ClassMember | SymbolFlags.ClassVar, dictType)
-    );
+
+    if (!isNamedTuple) {
+        symbolTable.set(
+            '__dataclass_fields__',
+            Symbol.createWithType(SymbolFlags.ClassMember | SymbolFlags.ClassVar, dictType)
+        );
+    }
 
     if (ClassType.isDataClassGenerateSlots(classType) && classType.details.localSlotsNames === undefined) {
         classType.details.localSlotsNames = localDataClassEntries.map((entry) => entry.name);