fix private attr

libs/community/langchain_community/chat_models/snowflake.py

@@ -19,6 +19,7 @@ from langchain_core.utils import (
 )
 from langchain_core.utils.utils import build_extra_kwargs
 from pydantic import Field, SecretStr, model_validator
+from typing_extensions import Self
 
 SUPPORTED_ROLES: List[str] = [
     "system",
@@ -139,14 +140,6 @@ class ChatSnowflakeCortex(BaseChatModel):
 
     @pre_init
     def validate_environment(cls, values: Dict) -> Dict:
-        try:
-            from snowflake.snowpark import Session
-        except ImportError:
-            raise ImportError(
-                "`snowflake-snowpark-python` package not found, please install it with "
-                "`pip install snowflake-snowpark-python`"
-            )
-
         values["snowflake_username"] = get_from_dict_or_env(
             values, "snowflake_username", "SNOWFLAKE_USERNAME"
         )
@@ -168,23 +161,33 @@ class ChatSnowflakeCortex(BaseChatModel):
         values["snowflake_role"] = get_from_dict_or_env(
             values, "snowflake_role", "SNOWFLAKE_ROLE"
         )
+        return values
 
-        connection_params = {
-            "account": values["snowflake_account"],
-            "user": values["snowflake_username"],
-            "password": values["snowflake_password"].get_secret_value(),
-            "database": values["snowflake_database"],
-            "schema": values["snowflake_schema"],
-            "warehouse": values["snowflake_warehouse"],
-            "role": values["snowflake_role"],
-        }
+    @model_validator(mode="after")
+    def post_init(self) -> Self:
+        """Post initialization."""
+        try:
+            from snowflake.snowpark import Session
+        except ImportError:
+            raise ImportError(
+                "`snowflake-snowpark-python` package not found, please install it with "
+                "`pip install snowflake-snowpark-python`"
+            )
 
         try:
-            values["_sp_session"] = Session.builder.configs(connection_params).create()
+            connection_params = {
+                "account": self.snowflake_account,
+                "user": self.snowflake_username,
+                "password": self.snowflake_password.get_secret_value(),
+                "database": self.snowflake_database,
+                "schema": self.snowflake_schema,
+                "warehouse": self.snowflake_warehouse,
+                "role": self.snowflake_role,
+            }
+            self._sp_session = Session.builder.configs(connection_params).create()
         except Exception as e:
             raise ChatSnowflakeCortexError(f"Failed to create session: {e}")
-
-        return values
+        return self
 
     def __del__(self) -> None:
         if getattr(self, "_sp_session", None) is not None:

libs/community/langchain_community/embeddings/laser.py

@@ -1,9 +1,9 @@
-from typing import Any, Dict, List, Optional
+from typing import Any, List
 
 import numpy as np
 from langchain_core.embeddings import Embeddings
-from langchain_core.utils import pre_init
-from pydantic import BaseModel, ConfigDict
+from pydantic import BaseModel, ConfigDict, model_validator
+from typing_extensions import Self
 
 LASER_MULTILINGUAL_MODEL: str = "laser2"
 
@@ -27,7 +27,7 @@ class LaserEmbeddings(BaseModel, Embeddings):
         embeddings = encoder.encode_sentences(["Hello", "World"])
     """
 
-    lang: Optional[str] = None
+    lang: str = LASER_MULTILINGUAL_MODEL
     """The language or language code you'd like to use
     If empty, this implementation will default
     to using a multilingual earlier LASER encoder model (called laser2)
@@ -41,25 +41,18 @@ class LaserEmbeddings(BaseModel, Embeddings):
         extra="forbid",
     )
 
-    @pre_init
-    def validate_environment(cls, values: Dict) -> Dict:
-        """Validate that laser_encoders has been installed."""
+    @model_validator(mode="after")
+    def post_init(self) -> Self:
         try:
             from laser_encoders import LaserEncoderPipeline
-
-            lang = values.get("lang")
-            if lang:
-                encoder_pipeline = LaserEncoderPipeline(lang=lang)
-            else:
-                encoder_pipeline = LaserEncoderPipeline(laser=LASER_MULTILINGUAL_MODEL)
-            values["_encoder_pipeline"] = encoder_pipeline
-
         except ImportError as e:
             raise ImportError(
                 "Could not import 'laser_encoders' Python package. "
                 "Please install it with `pip install laser_encoders`."
             ) from e
-        return values
+
+        self._encoder_pipeline = LaserEncoderPipeline(lang=self.lang)
+        return self
 
     def embed_documents(self, texts: List[str]) -> List[List[float]]:
         """Generate embeddings for documents using LASER.

libs/community/langchain_community/llms/minimax.py

@@ -17,6 +17,7 @@ from langchain_core.callbacks import (
 from langchain_core.language_models.llms import LLM
 from langchain_core.utils import convert_to_secret_str, get_from_dict_or_env, pre_init
 from pydantic import BaseModel, Field, SecretStr, model_validator
+from typing_extensions import Self
 
 from langchain_community.llms.utils import enforce_stop_tokens
 
@@ -89,13 +90,18 @@ class MinimaxCommon(BaseModel):
             "MINIMAX_API_HOST",
             default="https://api.minimax.chat",
         )
-        values["_client"] = _MinimaxEndpointClient(  # type: ignore[call-arg]
-            host=values["minimax_api_host"],
-            api_key=values["minimax_api_key"],
-            group_id=values["minimax_group_id"],
-        )
         return values
 
+    @model_validator(mode="after")
+    def post_init(self) -> Self:
+        """Post initialization."""
+        self._client = _MinimaxEndpointClient(
+            host=self.minimax_api_host,
+            api_key=self.minimax_api_key,
+            group_id=self.minimax_group_id,
+        )
+        return self
+
     @property
     def _default_params(self) -> Dict[str, Any]:
         """Get the default parameters for calling OpenAI API."""

libs/community/langchain_community/llms/solar.py

@@ -11,6 +11,7 @@ from pydantic import (
     SecretStr,
     model_validator,
 )
+from typing_extensions import Self
 
 from langchain_community.llms.utils import enforce_stop_tokens
 
@@ -90,12 +91,13 @@ class SolarCommon(BaseModel):
 
         if "base_url" in values and not values["base_url"].startswith(SOLAR_SERVICE):
             raise ValueError("base_url must match with: " + SOLAR_SERVICE)
-
-        values["_client"] = _SolarClient(
-            api_key=values["solar_api_key"], base_url=values["base_url"]
-        )
         return values
 
+    @model_validator(mode="after")
+    def post_init(self) -> Self:
+        self._client = _SolarClient(api_key=self.solar_api_key, base_url=self.base_url)
+        return self
+
     @property
     def _llm_type(self) -> str:
         return "solar"