Add imports for back-compat

Author: bryanforbes

asyncpg/exceptions/_base.py

@@ -17,7 +17,11 @@
     else:
         from typing import Self
 
-from ._postgres_message import PostgresMessage as PostgresMessage
+# PostgresMessageMeta imported for backward compatibility
+from ._postgres_message import (  # noqa: F401
+    PostgresMessage as PostgresMessage,
+    PostgresMessageMeta as PostgresMessageMeta,
+)
 
 __all__ = ['PostgresError', 'FatalPostgresError', 'UnknownPostgresError',
            'InterfaceError', 'InterfaceWarning', 'PostgresLogMessage',

asyncpg/pool.py

@@ -18,6 +18,12 @@
 from . import pool_connection_proxy
 from . import protocol
 
+# Imported for backward compatibility
+from .pool_connection_proxy import (  # noqa: F401
+    PoolConnectionProxy as PoolConnectionProxy,
+    PoolConnectionProxyMeta as PoolConnectionProxyMeta,
+)
+
 if typing.TYPE_CHECKING:
     import sys