Python: improved loading (#202)

* improved loading

* updated openai folder imports

* fixed import

python/packages/main/agent_framework/_logging.py

@@ -9,6 +9,8 @@ logging.basicConfig(
     datefmt="%Y-%m-%d %H:%M:%S",
 )
 
+__all__ = ["get_logger"]
+
 
 def get_logger(name: str = "agent_framework") -> logging.Logger:
     """Get a logger with the specified name, defaulting to 'agent_framework'.