Add HF access token

Added HF access token to use for the inference model. Also, did some formatting.

app.py

@@ -1,5 +1,6 @@
 from smolagents import CodeAgent, DuckDuckGoSearchTool, HfApiModel, load_tool, tool
 import datetime
+import os
 import requests
 import pytz
 import yaml
@@ -33,14 +34,17 @@ def get_current_time_in_timezone(timezone: str) -> str:
     except Exception as e:
         return f"Error fetching time for timezone '{timezone}': {str(e)}"
 
+# Read HF token
+access_token = os.getenv('HF_COURSE_TOKEN')
 
 final_answer = FinalAnswerTool()
 model = HfApiModel(
-max_tokens=2096,
-temperature=0.5,
-model_id='Qwen/Qwen2.5-Coder-32B-Instruct',# it is possible that this model may be overloaded
-custom_role_conversions=None,
-)
+    token=access_token,
+    max_tokens=2096,
+    temperature=0.5,
+    model_id='Qwen/Qwen2.5-Coder-32B-Instruct',# it is possible that this model may be overloaded
+    custom_role_conversions=None,
+    )
 
 
 # Import tool from Hub