add test

Author: Locked-chess-official

Lib/test/test_traceback.py

@@ -5109,6 +5109,26 @@ def func():
         actual = self.get_suggestion(func)
         self.assertIn("forget to import '_io'", actual)
 
+    def test_name_error_do_not_suggest_builtin_name_in_delete(self):
+        def func():
+            del next
+
+        actual = self.get_suggestion(func)
+        self.assertNotIn("Did you mean: 'anext'", actual)
+
+    def test_name_error_suggest_builtin_name_in_delete_if_not_delete_the_name_itself(self):
+        def func1():
+            del nxt[1]
+
+        actual = self.get_suggestion(func1)
+        self.assertIn("Did you mean: 'next'", actual)
+
+        def func2():
+            del nxt.__name__
+
+        actual = self.get_suggestion(func2)
+        self.assertIn("Did you mean: 'next'", actual)
+
 
 
 class PurePythonSuggestionFormattingTests(