fix: clear key value in module level

CHANGELOG.md

@@ -7,6 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+- Clean `key`, `value` at module `__init__` after dynamically adding to `__all__`
+  ([#3095](https://github.com/open-telemetry/opentelemetry-python/pull/3095))
+
 ## Version 1.15.0/0.36b0 (2022-12-09)
 
 - Regenerate opentelemetry-proto to be compatible with protobuf 3 and 4

opentelemetry-api/src/opentelemetry/_logs/__init__.py

@@ -56,3 +56,4 @@
     if not key.startswith("_"):
         value.__module__ = __name__  # type: ignore
         __all__.append(key)
+    del key, value

opentelemetry-sdk/src/opentelemetry/sdk/_logs/__init__.py

@@ -28,3 +28,4 @@
     if not key.startswith("_"):
         value.__module__ = __name__
         __all__.append(key)
+    del key, value

opentelemetry-sdk/src/opentelemetry/sdk/_logs/export/__init__.py

@@ -32,3 +32,4 @@
     if not key.startswith("_"):
         value.__module__ = __name__
         __all__.append(key)
+    del key, value

opentelemetry-sdk/src/opentelemetry/sdk/metrics/__init__.py

@@ -35,3 +35,4 @@
     if not key.startswith("_"):
         value.__module__ = __name__
         __all__.append(key)
+    del key, value

opentelemetry-sdk/src/opentelemetry/sdk/metrics/export/__init__.py

@@ -44,3 +44,4 @@
     if not key.startswith("_"):
         value.__module__ = __name__
         __all__.append(key)
+    del key, value

opentelemetry-sdk/src/opentelemetry/sdk/metrics/view/__init__.py

@@ -29,3 +29,4 @@
     if not key.startswith("_"):
         value.__module__ = __name__
         __all__.append(key)
+    del key, value