fix lint checks

Author: jakkdl

Makefile

@@ -12,7 +12,7 @@ test:
 
 lint:
 	$(PYTHON) -m pylint trio_websocket/ tests/ autobahn/ examples/
-	$(PYTHON) -m mypy trio_websocket tests autobahn examples
+	$(PYTHON) -m mypy --explicit-package-bases trio_websocket tests autobahn examples
 
 publish:
 	rm -fr build dist .egg trio_websocket.egg-info

tests/test_connection.py

@@ -32,6 +32,7 @@
 from __future__ import annotations
 
 from functools import partial, wraps
+import re
 import ssl
 import sys
 from unittest.mock import patch
@@ -68,7 +69,7 @@
 )
 
 if sys.version_info < (3, 11):
-    from exceptiongroup import BaseExceptionGroup
+    from exceptiongroup import BaseExceptionGroup  # pylint: disable=redefined-builtin
 
 WS_PROTO_VERSION = tuple(map(int, wsproto.__version__.split('.')))
 
@@ -431,8 +432,7 @@ async def handler(request):
         assert header_value == b'My test header'
 
 def _trio_default_loose() -> bool:
-    import re
-    assert re.match('^0\.\d\d\.', trio.__version__), "unexpected trio versioning scheme"
+    assert re.match(r'^0\.\d\d\.', trio.__version__), "unexpected trio versioning scheme"
     return int(trio.__version__[2:4]) < 25
 
 @fail_after(1)
@@ -459,7 +459,7 @@ async def handler(request):
         # 2. WebSocketServer.run
         # 3. trio.serve_listeners
         # 4. WebSocketServer._handle_connection
-        from trio.testing import RaisesGroup
+        from trio.testing import RaisesGroup  # pylint: disable=import-outside-toplevel
         assert RaisesGroup(
             RaisesGroup(
                 RaisesGroup(