Refactor generate_llm function for improved readability; streamline parameter assignments and enhance error handling for 400 Bad Request responses.

polLLM.py

@@ -42,11 +42,11 @@ def generate_llm(
     Send a chat-completion request to the LLM, with retries and backoff.
     Reads defaults from config.yaml, but can be overridden per-call.
     """
-    model       = _DEFAULT_MODEL
+    model = _DEFAULT_MODEL
     system_prompt = _build_system_prompt()
     messages = [
         {"role": "system", "content": system_prompt},
-        {"role": "user",   "content": prompt},
+        {"role": "user", "content": prompt},
     ]
 
     backoff = 1
@@ -55,14 +55,18 @@ def generate_llm(
             seed = random.randint(0, 2**31 - 1)
             logger.debug(f"LLM call attempt={attempt}, model={model}, seed={seed}")
             resp = client.chat.completions.create(
-                model       = model,
-                messages    = messages,
-                seed        = seed,
+                model=model,
+                messages=messages,
+                seed=seed,
             )
             text = resp.choices[0].message.content.strip()
             logger.debug("LLM response received")
             return text
         except Exception as e:
+            # Check if the error is a 400 Bad Request
+            if hasattr(e, "status_code") and e.status_code == 400:
+                logger.error("LLM error 400 (Bad Request): Not retrying.")
+                return "Error: Bad Request (400)"
             logger.error(f"LLM error on attempt {attempt}: {e}")
             if attempt < 5:
                 time.sleep(backoff)