From b729307ca08f12018bb9420574068acf636af462 Mon Sep 17 00:00:00 2001
From: "renovate[bot]" <29139614+renovate[bot]@users.noreply.github.com>
Date: Sun, 1 Nov 2026 10:14:30 +0000
Subject: [PATCH 1/2] chore(deps): update dependency pylint to v4 [security]

---
 dev-requirements.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dev-requirements.txt b/dev-requirements.txt
index caa46ac0c4a..c96dbd33898 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,4 +1,4 @@
-pylint==3.3.4
+pylint==4.0.9
 griffe==1.15.0
 httpretty==1.1.4
 inline-snapshot==0.34.2

From 21664a1add06eb99ca62303ed6ef79d4e28bb4c3 Mon Sep 17 00:00:00 2001
From: Lukas Hering <lukasheringb@gmail.com>
Date: Sun, 1 Nov 2026 22:58:13 -0500
Subject: [PATCH 2/2] Fix lint compatibility with Pylint 4

Remove the obsolete suggestion-mode option from both Pylint configs and use NoneType when unwrapping optional annotations.

Assisted-by: GPT-6
---
 .pylintrc                                                     | 4 ----
 .../src/opentelemetry/configuration/_conversion.py            | 4 ++--
 opentelemetry-semantic-conventions/.pylintrc                  | 4 ----
 3 files changed, 2 insertions(+), 10 deletions(-)

diff --git a/.pylintrc b/.pylintrc
index bda4148beb5..6ee96abff4d 100644
--- a/.pylintrc
+++ b/.pylintrc
@@ -36,10 +36,6 @@ persistent=yes
 # Specify a configuration file.
 #rcfile=
 
-# When enabled, pylint would attempt to guess common misconfiguration and emit
-# user-friendly hints instead of false-positive error messages.
-suggestion-mode=yes
-
 # Allow loading of arbitrary C extensions. Extensions are imported into the
 # active Python interpreter and may run arbitrary code.
 unsafe-load-any-extension=no
diff --git a/opentelemetry-configuration/src/opentelemetry/configuration/_conversion.py b/opentelemetry-configuration/src/opentelemetry/configuration/_conversion.py
index e5ceb0f59f5..dca1e14c805 100644
--- a/opentelemetry-configuration/src/opentelemetry/configuration/_conversion.py
+++ b/opentelemetry-configuration/src/opentelemetry/configuration/_conversion.py
@@ -14,7 +14,7 @@
 from collections.abc import Mapping
 from dataclasses import MISSING, fields, is_dataclass
 from enum import Enum
-from types import UnionType
+from types import NoneType, UnionType
 from typing import Any, TypeVar, Union, get_args, get_origin, get_type_hints
 
 _T = TypeVar("_T")
@@ -27,7 +27,7 @@ def _unwrap_optional(type_hint: Any) -> Any:
     """
     origin = get_origin(type_hint)
     if origin is UnionType or origin is Union:
-        non_none = [t for t in get_args(type_hint) if t is not type(None)]
+        non_none = [t for t in get_args(type_hint) if t is not NoneType]
         if len(non_none) == 1:
             return non_none[0]
     return type_hint
diff --git a/opentelemetry-semantic-conventions/.pylintrc b/opentelemetry-semantic-conventions/.pylintrc
index b034d8c75ad..621216e432e 100644
--- a/opentelemetry-semantic-conventions/.pylintrc
+++ b/opentelemetry-semantic-conventions/.pylintrc
@@ -36,10 +36,6 @@ persistent=yes
 # Specify a configuration file.
 #rcfile=
 
-# When enabled, pylint would attempt to guess common misconfiguration and emit
-# user-friendly hints instead of false-positive error messages.
-suggestion-mode=yes
-
 # Allow loading of arbitrary C extensions. Extensions are imported into the
 # active Python interpreter and may run arbitrary code.
 unsafe-load-any-extension=no