community:yuan2[patch]: standardize init args (#21462)

updated stop and request_timeout so they aliased to stop_sequences, and
timeout respectively. Added test that both continue to set the same
underlying attributes.

Related to
[20085](#20085)

Co-authored-by: ccurme <chester.curme@gmail.com>

libs/community/langchain_community/chat_models/yuan2.py

@@ -93,7 +93,9 @@ class ChatYuan2(BaseChatModel):
     )
     """Base URL path for API requests, an OpenAI compatible API server."""
 
-    request_timeout: Optional[Union[float, Tuple[float, float]]] = None
+    request_timeout: Optional[Union[float, Tuple[float, float]]] = Field(
+        default=None, alias="timeout"
+    )
     """Timeout for requests to yuan2 completion API. Default is 600 seconds."""
 
     max_retries: int = 6
@@ -111,7 +113,7 @@ class ChatYuan2(BaseChatModel):
     top_p: Optional[float] = 0.9
     """The top-p value to use for sampling."""
 
-    stop: Optional[List[str]] = ["<eod>"]
+    stop: Optional[List[str]] = Field(default=["<eod>"], alias="stop_sequences")
     """A list of strings to stop generation when encountered."""
 
     repeat_last_n: Optional[int] = 64

libs/community/tests/unit_tests/chat_models/test_yuan2.py

@@ -22,6 +22,22 @@ def test_yuan2_model_param() -> None:
     assert chat.model_name == "foo"
 
 
+@pytest.mark.requires("openai")
+def test_yuan2_timeout_param() -> None:
+    chat = ChatYuan2(request_timeout=5)  # type: ignore[call-arg]
+    assert chat.request_timeout == 5
+    chat = ChatYuan2(timeout=10)  # type: ignore[call-arg]
+    assert chat.request_timeout == 10
+
+
+@pytest.mark.requires("openai")
+def test_yuan2_stop_sequences_param() -> None:
+    chat = ChatYuan2(stop=["<eod>"])  # type: ignore[call-arg]
+    assert chat.stop == ["<eod>"]
+    chat = ChatYuan2(stop_sequences=["<eod>"])  # type: ignore[call-arg]
+    assert chat.stop == ["<eod>"]
+
+
 def test__convert_message_to_dict_human() -> None:
     message = HumanMessage(content="foo")
     result = _convert_message_to_dict(message)