Exclude Bedrock client and credentials_profile_name fields from seria…

…lisation (#13603)

libs/langchain/langchain/chat_models/bedrock.py

@@ -54,8 +54,6 @@ def is_lc_serializable(cls) -> bool:
     def lc_attributes(self) -> Dict[str, Any]:
         attributes: Dict[str, Any] = {}
 
-        print(self.region_name)
-
         if self.region_name:
             attributes["region_name"] = self.region_name
 

libs/langchain/langchain/llms/bedrock.py

@@ -4,7 +4,7 @@
 from typing import Any, Dict, Iterator, List, Mapping, Optional
 
 from langchain_core.outputs import GenerationChunk
-from langchain_core.pydantic_v1 import BaseModel, Extra, root_validator
+from langchain_core.pydantic_v1 import BaseModel, Extra, Field, root_validator
 
 from langchain.callbacks.manager import CallbackManagerForLLMRun
 from langchain.llms.base import LLM
@@ -148,14 +148,14 @@ def prepare_output_stream(
 class BedrockBase(BaseModel, ABC):
     """Base class for Bedrock models."""
 
-    client: Any  #: :meta private:
+    client: Any = Field(exclude=True)  #: :meta private:
 
     region_name: Optional[str] = None
     """The aws region e.g., `us-west-2`. Fallsback to AWS_DEFAULT_REGION env variable
     or region specified in ~/.aws/config in case it is not provided here.
     """
 
-    credentials_profile_name: Optional[str] = None
+    credentials_profile_name: Optional[str] = Field(default=None, exclude=True)
     """The name of the profile in the ~/.aws/credentials or ~/.aws/config files, which
     has either access keys or role information specified.
     If not specified, the default credential profile or, if on an EC2 instance,