update trainers

src/llamafactory/train/ppo/utils.py

@@ -8,13 +8,14 @@ from transformers.integrations import is_deepspeed_zero3_enabled
 from ...extras.packages import is_requests_available
 
 
+if is_requests_available():
+    import requests
+
+
 if TYPE_CHECKING:
     from transformers import PreTrainedModel
     from trl import AutoModelForCausalLMWithValueHead
 
-if is_requests_available():
-    import requests
-
 
 def get_rewards_from_server(server_url: str, messages: List[str]) -> List[torch.Tensor]:
     headers = {"Content-Type": "application/json"}