Right way of keeping module from destruction

aiohttp/client.py

@@ -383,9 +383,9 @@ def __init_subclass__(cls: type["ClientSession"]) -> None:
             f"Inheritance class {cls.__name__} from ClientSession " "is forbidden"
         )
 
-    def __del__(self, _warnings: Any = warnings) -> None:
+    def __del__(self, warnings_warn: Any = warnings.warn) -> None:
         if not self.closed:
-            _warnings.warn(
+            warnings_warn(
                 f"Unclosed client session {self!r}",
                 ResourceWarning,
                 source=self,

aiohttp/client_reqrep.py

@@ -352,7 +352,7 @@
         filename = multipart.content_disposition_filename(params)
         return ContentDisposition(disposition_type, params, filename)
 
-    def __del__(self, _warnings: Any = warnings) -> None:
+    def __del__(self, warnings_warn: Any = warnings.warn) -> None:
         if self._closed:
             return
 
@@ -361,7 +361,7 @@
             self._cleanup_writer()
 
             if self._loop.get_debug():
-                _warnings.warn(
+                warnings_warn(
                     f"Unclosed response {self!r}", ResourceWarning, source=self
                 )
                 context = {"client_response": self, "message": "Unclosed response"}

aiohttp/connector.py

@@ -132,11 +132,9 @@ def __init__(
     def __repr__(self) -> str:
         return f"Connection<{self._key}>"
 
-    def __del__(self, _warnings: Any = warnings) -> None:
+    def __del__(self, warnings_warn: Any = warnings.warn) -> None:
         if self._protocol is not None:
-            _warnings.warn(
-                f"Unclosed connection {self!r}", ResourceWarning, source=self
-            )
+            warnings_warn(f"Unclosed connection {self!r}", ResourceWarning, source=self)
             if self._loop.is_closed():
                 return