community[patch]: Update root_validators ChatModels: ChatBaichuan, QianfanChatEndpoint, MiniMaxChat, ChatSparkLLM, ChatZhipuAI (#22853)

This PR updates root validators for:

- ChatModels: ChatBaichuan, QianfanChatEndpoint, MiniMaxChat,
ChatSparkLLM, ChatZhipuAI

Issues #22819

---------

Co-authored-by: Eugene Yurtsev <eyurtsev@gmail.com>

libs/community/langchain_community/chat_models/baichuan.py

@@ -89,7 +89,7 @@ class ChatBaichuan(BaseChatModel):
 
     baichuan_api_base: str = Field(default=DEFAULT_API_BASE)
     """Baichuan custom endpoints"""
-    baichuan_api_key: Optional[SecretStr] = Field(default=None, alias="api_key")
+    baichuan_api_key: SecretStr = Field(alias="api_key")
     """Baichuan API Key"""
     baichuan_secret_key: Optional[SecretStr] = None
     """[DEPRECATED, keeping it for for backward compatibility] Baichuan Secret Key"""
@@ -142,7 +142,7 @@ class ChatBaichuan(BaseChatModel):
         values["model_kwargs"] = extra
         return values
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         values["baichuan_api_base"] = get_from_dict_or_env(
             values,
@@ -153,11 +153,10 @@ class ChatBaichuan(BaseChatModel):
         values["baichuan_api_key"] = convert_to_secret_str(
             get_from_dict_or_env(
                 values,
-                "baichuan_api_key",
+                ["baichuan_api_key", "api_key"],
                 "BAICHUAN_API_KEY",
             )
         )
-
         return values
 
     @property

libs/community/langchain_community/chat_models/baidu_qianfan_endpoint.py

@@ -135,7 +135,7 @@ class QianfanChatEndpoint(BaseChatModel):
 
     client: Any  #: :meta private:
 
-    qianfan_ak: Optional[SecretStr] = Field(default=None, alias="api_key")
+    qianfan_ak: SecretStr = Field(alias="api_key")
     """Qianfan API KEY"""
     qianfan_sk: Optional[SecretStr] = Field(default=None, alias="secret_key")
     """Qianfan SECRET KEY"""
@@ -171,35 +171,43 @@ class QianfanChatEndpoint(BaseChatModel):
 
         allow_population_by_field_name = True
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         values["qianfan_ak"] = convert_to_secret_str(
             get_from_dict_or_env(
                 values,
-                "qianfan_ak",
+                ["qianfan_ak", "api_key"],
                 "QIANFAN_AK",
-                default="",
             )
         )
         values["qianfan_sk"] = convert_to_secret_str(
             get_from_dict_or_env(
                 values,
-                "qianfan_sk",
+                ["qianfan_sk", "secret_key"],
                 "QIANFAN_SK",
-                default="",
             )
         )
+
+        default_values = {
+            name: field.default
+            for name, field in cls.__fields__.items()
+            if field.default is not None
+        }
+        default_values.update(values)
         params = {
             **values.get("init_kwargs", {}),
-            "model": values["model"],
+            "model": default_values.get("model"),
-            "stream": values["streaming"],
+            "stream": default_values.get("streaming"),
         }
         if values["qianfan_ak"].get_secret_value() != "":
             params["ak"] = values["qianfan_ak"].get_secret_value()
         if values["qianfan_sk"].get_secret_value() != "":
             params["sk"] = values["qianfan_sk"].get_secret_value()
-        if values["endpoint"] is not None and values["endpoint"] != "":
+        if (
-            params["endpoint"] = values["endpoint"]
+            default_values.get("endpoint") is not None
+            and default_values["endpoint"] != ""
+        ):
+            params["endpoint"] = default_values["endpoint"]
         try:
             import qianfan
 

libs/community/langchain_community/chat_models/minimax.py

@@ -166,7 +166,7 @@ class MiniMaxChat(BaseChatModel):
     )
     minimax_group_id: Optional[str] = Field(default=None, alias="group_id")
     """[DEPRECATED, keeping it for for backward compatibility] Group Id"""
-    minimax_api_key: Optional[SecretStr] = Field(default=None, alias="api_key")
+    minimax_api_key: SecretStr = Field(alias="api_key")
     """Minimax API Key"""
     streaming: bool = False
     """Whether to stream the results or not."""
@@ -176,14 +176,18 @@ class MiniMaxChat(BaseChatModel):
 
         allow_population_by_field_name = True
 
-    @root_validator(allow_reuse=True)
+    @root_validator(pre=True, allow_reuse=True)
     def validate_environment(cls, values: Dict) -> Dict:
         """Validate that api key and python package exists in environment."""
         values["minimax_api_key"] = convert_to_secret_str(
-            get_from_dict_or_env(values, "minimax_api_key", "MINIMAX_API_KEY")
+            get_from_dict_or_env(
+                values,
+                ["minimax_api_key", "api_key"],
+                "MINIMAX_API_KEY",
+            )
         )
         values["minimax_group_id"] = get_from_dict_or_env(
-            values, "minimax_group_id", "MINIMAX_GROUP_ID"
+            values, ["minimax_group_id", "group_id"], "MINIMAX_GROUP_ID"
         )
         # Get custom api url from environment.
         values["minimax_api_host"] = get_from_dict_or_env(

libs/community/langchain_community/chat_models/sparkllm.py

@@ -195,21 +195,21 @@ class ChatSparkLLM(BaseChatModel):
 
         return values
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict) -> Dict:
         values["spark_app_id"] = get_from_dict_or_env(
             values,
-            "spark_app_id",
+            ["spark_app_id", "app_id"],
             "IFLYTEK_SPARK_APP_ID",
         )
         values["spark_api_key"] = get_from_dict_or_env(
             values,
-            "spark_api_key",
+            ["spark_api_key", "api_key"],
             "IFLYTEK_SPARK_API_KEY",
         )
         values["spark_api_secret"] = get_from_dict_or_env(
             values,
-            "spark_api_secret",
+            ["spark_api_secret", "api_secret"],
             "IFLYTEK_SPARK_API_SECRET",
         )
         values["spark_api_url"] = get_from_dict_or_env(
@@ -224,9 +224,15 @@ class ChatSparkLLM(BaseChatModel):
             "IFLYTEK_SPARK_LLM_DOMAIN",
             SPARK_LLM_DOMAIN,
         )
+
         # put extra params into model_kwargs
-        values["model_kwargs"]["temperature"] = values["temperature"] or cls.temperature
+        default_values = {
-        values["model_kwargs"]["top_k"] = values["top_k"] or cls.top_k
+            name: field.default
+            for name, field in cls.__fields__.items()
+            if field.default is not None
+        }
+        values["model_kwargs"]["temperature"] = default_values.get("temperature")
+        values["model_kwargs"]["top_k"] = default_values.get("top_k")
 
         values["client"] = _SparkLLMClient(
             app_id=values["spark_app_id"],

libs/community/langchain_community/chat_models/zhipuai.py

@@ -377,10 +377,10 @@ class ChatZhipuAI(BaseChatModel):
 
         allow_population_by_field_name = True
 
-    @root_validator()
+    @root_validator(pre=True)
     def validate_environment(cls, values: Dict[str, Any]) -> Dict[str, Any]:
         values["zhipuai_api_key"] = get_from_dict_or_env(
-            values, "zhipuai_api_key", "ZHIPUAI_API_KEY"
+            values, ["zhipuai_api_key", "api_key"], "ZHIPUAI_API_KEY"
         )
         values["zhipuai_api_base"] = get_from_dict_or_env(
             values, "zhipuai_api_base", "ZHIPUAI_API_BASE", default=ZHIPUAI_API_BASE

libs/community/tests/integration_tests/chat_models/test_baichuan.py

@@ -7,7 +7,7 @@ from langchain_community.chat_models.baichuan import ChatBaichuan
 
 
 def test_chat_baichuan_default() -> None:
-    chat = ChatBaichuan(streaming=True)
+    chat = ChatBaichuan(streaming=True)  # type: ignore[call-arg]
     message = HumanMessage(content="请完整背诵将进酒，背诵5遍")
     response = chat.invoke([message])
     assert isinstance(response, AIMessage)
@@ -15,7 +15,7 @@ def test_chat_baichuan_default() -> None:
 
 
 def test_chat_baichuan_default_non_streaming() -> None:
-    chat = ChatBaichuan()
+    chat = ChatBaichuan()  # type: ignore[call-arg]
     message = HumanMessage(content="请完整背诵将进酒，背诵5遍")
     response = chat.invoke([message])
     assert isinstance(response, AIMessage)
@@ -39,7 +39,7 @@ def test_chat_baichuan_turbo_non_streaming() -> None:
 
 
 def test_chat_baichuan_with_temperature() -> None:
-    chat = ChatBaichuan(temperature=1.0)
+    chat = ChatBaichuan(temperature=1.0)  # type: ignore[call-arg]
     message = HumanMessage(content="Hello")
     response = chat.invoke([message])
     assert isinstance(response, AIMessage)
@@ -47,7 +47,7 @@ def test_chat_baichuan_with_temperature() -> None:
 
 
 def test_chat_baichuan_with_kwargs() -> None:
-    chat = ChatBaichuan()
+    chat = ChatBaichuan()  # type: ignore[call-arg]
     message = HumanMessage(content="百川192K API是什么时候上线的？")
     response = chat.invoke(
         [message], temperature=0.88, top_p=0.7, with_search_enhance=True
@@ -58,7 +58,7 @@ def test_chat_baichuan_with_kwargs() -> None:
 
 
 def test_extra_kwargs() -> None:
-    chat = ChatBaichuan(temperature=0.88, top_p=0.7, with_search_enhance=True)
+    chat = ChatBaichuan(temperature=0.88, top_p=0.7, with_search_enhance=True)  # type: ignore[call-arg]
     assert chat.temperature == 0.88
     assert chat.top_p == 0.7
     assert chat.with_search_enhance is True

libs/community/tests/unit_tests/chat_models/test_baichuan.py

@@ -107,7 +107,7 @@ def test_baichuan_key_masked_when_passed_from_env(
     """Test initialization with an API key provided via an env variable"""
     monkeypatch.setenv("BAICHUAN_API_KEY", "test-api-key")
 
-    chat = ChatBaichuan()
+    chat = ChatBaichuan()  # type: ignore[call-arg]
     print(chat.baichuan_api_key, end="")  # noqa: T201
     captured = capsys.readouterr()
     assert captured.out == "**********"