chore: Fix baichuan API pylint error (#1010)

Co-authored-by: csunny <cfqsunny@163.com>

dbgpt/model/proxy/llms/baichuan.py

@@ -8,7 +8,9 @@ from dbgpt.model.parameter import ProxyModelParameters
 BAICHUAN_DEFAULT_MODEL = "Baichuan2-Turbo-192k"
 
 
-def baichuan_generate_stream(model: ProxyModel, tokenizer=None, params=None, device=None, context_len=4096):
+def baichuan_generate_stream(
+    model: ProxyModel, tokenizer=None, params=None, device=None, context_len=4096
+):
     url = "https://api.baichuan-ai.com/v1/chat/completions"
 
     model_params = model.get_params()
@@ -63,22 +65,27 @@ def baichuan_generate_stream(model: ProxyModel, tokenizer=None, params=None, dev
                         text += content
                 yield text
 
+
 def main():
     model_params = ProxyModelParameters(
         model_name="not-used",
         model_path="not-used",
         proxy_server_url="not-used",
         proxy_api_key="YOUR_BAICHUAN_API_KEY",
-        proxyllm_backend="Baichuan2-Turbo-192k"
+        proxyllm_backend="Baichuan2-Turbo-192k",
     )
     final_text = ""
     for part in baichuan_generate_stream(
         model=ProxyModel(model_params=model_params),
-        params={"messages": [ModelMessage(
-            role=ModelMessageRoleType.HUMAN,
-            content="背诵《论语》第一章")]}):
+        params={
+            "messages": [
+                ModelMessage(role=ModelMessageRoleType.HUMAN, content="背诵《论语》第一章")
+            ]
+        },
+    ):
         final_text = part
     print(final_text)
 
+
 if __name__ == "__main__":
     main()