community[patch]: standardize baichuan init args (#20209)

Related to #20085

@baskaryan

libs/community/langchain_community/chat_models/baichuan.py

@@ -95,7 +95,7 @@ def lc_serializable(self) -> bool:
     """[DEPRECATED, keeping it for for backward compatibility] Baichuan Secret Key"""
     streaming: bool = False
     """Whether to stream the results or not."""
-    request_timeout: int = 60
+    request_timeout: int = Field(default=60, alias="timeout")
     """request timeout for chat http requests"""
     model = "Baichuan2-Turbo-192K"
     """model name of Baichuan, default is `Baichuan2-Turbo-192K`,

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

@@ -21,6 +21,23 @@
 )
 
 
+def test_initialization() -> None:
+    """Test chat model initialization."""
+
+    for model in [
+        ChatBaichuan(
+            model="Baichuan2-Turbo-192K", baichuan_api_key="test-api-key", timeout=40
+        ),
+        ChatBaichuan(
+            model="Baichuan2-Turbo-192K",
+            baichuan_api_key="test-api-key",
+            request_timeout=40,
+        ),
+    ]:
+        assert model.model == "Baichuan2-Turbo-192K"
+        assert model.request_timeout == 40
+
+
 def test__convert_message_to_dict_human() -> None:
     message = HumanMessage(content="foo")
     result = _convert_message_to_dict(message)