diff --git a/.runpod/hub.json b/.runpod/hub.json
index 77770c223..a97c0b3a4 100644
--- a/.runpod/hub.json
+++ b/.runpod/hub.json
@@ -95,4 +95,4 @@
       }
     ]
   }
-}
\ No newline at end of file
+}
diff --git a/.runpod/src/config/config.yaml b/.runpod/src/config/config.yaml
index 60cd7a2de..4dff37cae 100644
--- a/.runpod/src/config/config.yaml
+++ b/.runpod/src/config/config.yaml
@@ -574,4 +574,4 @@ torchdistx_path: ${TORCHDISTX_PATH}
 pretraining_dataset: ${PRETRAINING_DATASET}
 debug: ${DEBUG}
 seed: ${SEED}
-strict: ${STRICT}
\ No newline at end of file
+strict: ${STRICT}
diff --git a/.runpod/src/handler.py b/.runpod/src/handler.py
index 181575322..21073dff4 100644
--- a/.runpod/src/handler.py
+++ b/.runpod/src/handler.py
@@ -1,9 +1,14 @@
-import runpod
+"""
+Runpod serverless entrypoint handler
+"""
+
 import os
+
+import runpod
+import yaml
+from huggingface_hub._login import login
 from train import train
 from utils import get_output_dir
-from huggingface_hub._login import login
-import yaml
 
 BASE_VOLUME = os.environ.get("BASE_VOLUME", "/runpod-volume")
 if not os.path.exists(BASE_VOLUME):
@@ -30,7 +35,7 @@ async def handler(job):
     args["runpod_job_id"] = runpod_job_id
 
     yaml_data = yaml.dump(args, default_flow_style=False)
-    with open(config_path, "w") as file:
+    with open(config_path, "w", encoding="utf-8") as file:
         file.write(yaml_data)
 
     # Handle credentials
diff --git a/.runpod/src/test_input.json b/.runpod/src/test_input.json
index 88edb3123..889e8ee27 100644
--- a/.runpod/src/test_input.json
+++ b/.runpod/src/test_input.json
@@ -58,4 +58,4 @@
       }
     }
   }
-}
\ No newline at end of file
+}
diff --git a/.runpod/src/train.py b/.runpod/src/train.py
index dff606162..72edda940 100644
--- a/.runpod/src/train.py
+++ b/.runpod/src/train.py
@@ -1,8 +1,8 @@
-import yaml
-from torch.cuda import device_count
+"""
+Runpod train entrypoint
+"""
+
 import asyncio
-import os
-from typing import Optional, Dict, Any, AsyncGenerator
 
 
 async def train(config_path: str, gpu_id: str = "0", preprocess: bool = True):
@@ -11,20 +11,23 @@ async def train(config_path: str, gpu_id: str = "0", preprocess: bool = True):
     :param config_path: Path to the YAML config file
     :param gpu_id: GPU ID to use (default: "0")
     :param preprocess: Whether to run preprocessing (default: True)
-    
+
     """
     # First check if preprocessing is needed
     if preprocess:
         # Preprocess command
-        preprocess_cmd = f"CUDA_VISIBLE_DEVICES={gpu_id} axolotl preprocess {config_path}"
+        preprocess_cmd = (
+            f"CUDA_VISIBLE_DEVICES={gpu_id} axolotl preprocess {config_path}"
+        )
         process = await asyncio.create_subprocess_shell(
             preprocess_cmd,
             stdout=asyncio.subprocess.PIPE,
-            stderr=asyncio.subprocess.STDOUT
+            stderr=asyncio.subprocess.STDOUT,
         )
-        
-        async for line in process.stdout:
-            yield f"Preprocessing: {line.decode().strip()}"
+
+        if process.stdout is not None:
+            async for line in process.stdout:
+                yield f"Preprocessing: {line.decode().strip()}"
         await process.wait()
         yield "Preprocessing completed."
     else:
@@ -33,11 +36,10 @@ async def train(config_path: str, gpu_id: str = "0", preprocess: bool = True):
     # Training command
     train_cmd = f"axolotl train {config_path}"
     process = await asyncio.create_subprocess_shell(
-        train_cmd,
-        stdout=asyncio.subprocess.PIPE,
-        stderr=asyncio.subprocess.STDOUT
+        train_cmd, stdout=asyncio.subprocess.PIPE, stderr=asyncio.subprocess.STDOUT
     )
-    
-    async for line in process.stdout:
-        yield f"Training: {line.decode().strip()}"
+
+    if process.stdout is not None:
+        async for line in process.stdout:
+            yield f"Training: {line.decode().strip()}"
     await process.wait()
diff --git a/.runpod/src/utils.py b/.runpod/src/utils.py
index ed60c7183..6e790a212 100644
--- a/.runpod/src/utils.py
+++ b/.runpod/src/utils.py
@@ -1,4 +1,9 @@
+"""
+Runpod launcher utils
+"""
+
 import os
+
 import yaml
 
 
@@ -27,7 +32,8 @@ def make_valid_config(input_args):
     :return: str, path to the updated config file
     """
     # Load default config
-    all_args = yaml.safe_load(open("config/config.yaml", "r"))
+    with open("config/config.yaml", "r", encoding="utf-8") as fin:
+        all_args = yaml.safe_load(fin)
 
     if not input_args:
         print("No args provided, using defaults")
@@ -38,7 +44,7 @@ def make_valid_config(input_args):
     updated_config_path = "config/updated_config.yaml"
 
     # Save updated config to new file
-    with open(updated_config_path, "w") as f:
+    with open(updated_config_path, "w", encoding="utf-8") as f:
         yaml.dump(all_args, f)
 
     return updated_config_path
@@ -57,9 +63,9 @@ def set_config_env_vars(args: dict):
         """Convert Python values to string format for environment variables"""
         if value is None:
             return ""
-        elif isinstance(value, bool):
+        if isinstance(value, bool):
             return str(value).lower()
-        elif isinstance(value, (list, dict)):
+        if isinstance(value, (list, dict)):
             return str(value)
         return str(value)
 
diff --git a/.runpod/tests.json b/.runpod/tests.json
index 633bac460..c4808cd54 100644
--- a/.runpod/tests.json
+++ b/.runpod/tests.json
@@ -90,4 +90,4 @@
       "12.0"
     ]
   }
-}
\ No newline at end of file
+}