Update app.py

app.py

@@ -1,4 +1,4 @@
-from smolagents import CodeAgent,DuckDuckGoSearchTool, HfApiModel,load_tool,tool
+from smolagents import CodeAgent, DuckDuckGoSearchTool, HfApiModel, load_tool, tool
 import datetime
 import requests
 import pytz
@@ -7,21 +7,26 @@ from tools.final_answer import FinalAnswerTool
 from openai import OpenAI
 import gradio as gr
 import os
+from huggingface_hub import login
+
+# Initialize OpenAI client (optional, kept from original code)
 api_key = os.getenv("OPENAI_API_KEY")
+if not api_key:
+    raise ValueError("OPENAI_API_KEY environment variable not set.")
 client = OpenAI(api_key=api_key)
-from Gradio_UI import GradioUI
 
-# Below is an example of a tool that does nothing. Amaze us with your creativity !
-@tool
-def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return type
-    #Keep this format for the description / args / args description but feel free to modify the tool
-    """A tool that does nothing yet 
-    Args:
-        arg1: the first argument
-        arg2: the second argument
-    """
-    return "What magic will you build ?"
+# Authenticate with Hugging Face
+hf_token = os.getenv("HF_TOKEN")
+if not hf_token:
+    print("HF_TOKEN not set. Attempting to log in via huggingface-cli...")
+    try:
+        login()  # Prompts for token if not already logged in
+    except Exception as e:
+        raise ValueError(f"Failed to authenticate with Hugging Face: {str(e)}. Please run `huggingface-cli login` or set HF_TOKEN environment variable.")
+else:
+    login(token=hf_token)
 
+# Tool to get current time in a specified timezone
 @tool
 def get_current_time_in_timezone(timezone: str) -> str:
     """A tool that fetches the current local time in a specified timezone.
@@ -29,37 +34,82 @@ def get_current_time_in_timezone(timezone: str) -> str:
         timezone: A string representing a valid timezone (e.g., 'America/New_York').
     """
     try:
-        # Create timezone object
         tz = pytz.timezone(timezone)
-        # Get current time in that timezone
         local_time = datetime.datetime.now(tz).strftime("%Y-%m-%d %H:%M:%S")
         return f"The current local time in {timezone} is: {local_time}"
     except Exception as e:
         return f"Error fetching time for timezone '{timezone}': {str(e)}"
 
+# Tool to verify timezone output
+@tool
+def verify_timezone_output(timezone: str, time_output: str) -> str:
+    """A tool that verifies the output of get_current_time_in_timezone.
+    Args:
+        timezone: A string representing the timezone to verify (e.g., 'America/New_York').
+        time_output: The time string returned by get_current_time_in_timezone (e.g., 'The current local time in America/New_York is: 2025-05-29 10:53:00').
+    Returns:
+        A string indicating whether the timezone and time are valid, with details.
+    """
+    try:
+        if timezone not in pytz.all_timezones:
+            return f"Verification failed: '{timezone}' is not a valid timezone."
+        if "The current local time" not in time_output or timezone not in time_output:
+            return "Verification failed: Invalid time output format."
+        time_str = time_output.split("is: ")[-1].strip()
+        try:
+            parsed_time = datetime.datetime.strptime(time_str, "%Y-%m-%d %H:%M:%S")
+        except ValueError:
+            return "Verification failed: Time format is incorrect (expected 'YYYY-MM-DD HH:MM:SS')."
+        try:
+            response = requests.get(f"http://worldtimeapi.org/api/timezone/{timezone}", timeout=5)
+            response.raise_for_status()
+            api_data = response.json()
+            api_time = datetime.datetime.fromisoformat(api_data["datetime"].replace("Z", "+00:00"))
+            api_time = api_time.astimezone(pytz.timezone(timezone))
+            api_time_str = api_time.strftime("%Y-%m-%d %H:%M:%S")
+            time_diff = abs((parsed_time - api_time).total_seconds())
+            if time_diff > 60:
+                return f"Verification failed: Time '{time_str}' differs significantly from API time '{api_time_str}'."
+        except requests.RequestException as e:
+            return f"Verification warning: Could not verify with external API due to {str(e)}. Local time format is valid."
+        return f"Verification passed: Timezone '{timezone}' and time '{time_str}' are valid."
+    except Exception as e:
+        return f"Verification error: {str(e)}"
 
+# Initialize FinalAnswerTool
 final_answer = FinalAnswerTool()
 
-# If the agent does not answer, the model is overloaded, please use another model or the following Hugging Face Endpoint that also contains qwen2.5 coder:
-# model_id='https://pflgm2locj2t89co.us-east-1.aws.endpoints.huggingface.cloud' 
-
-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,
-)
-
+# Initialize Hugging Face model with fallback endpoint
+try:
+    model = HfApiModel(
+        max_tokens=2096,
+        temperature=0.5,
+        model_id='Qwen/Qwen2.5-Coder-32B-Instruct',
+        custom_role_conversions=None,
+    )
+except Exception as e:
+    print(f"Primary model failed: {str(e)}. Switching to fallback endpoint...")
+    model = HfApiModel(
+        max_tokens=2096,
+        temperature=0.5,
+        model_id='https://pflgm2locj2t89co.us-east-1.aws.endpoints.huggingface.cloud',
+        custom_role_conversions=None,
+    )
 
-# Import tool from Hub
+# Load external tool (e.g., text-to-image)
 image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_code=True)
 
-with open("prompts.yaml", 'r') as stream:
-    prompt_templates = yaml.safe_load(stream)
-    
+# Load prompt templates from YAML
+try:
+    with open("prompts.yaml", 'r') as stream:
+        prompt_templates = yaml.safe_load(stream)
+except FileNotFoundError:
+    raise FileNotFoundError("prompts.yaml not found. Ensure the file exists in the working directory.")
+
+# Initialize CodeAgent with tools
 agent = CodeAgent(
     model=model,
-    tools=[final_answer], ## add your tools here (don't remove final answer)
+    tools=[get_current_time_in_timezone, verify_timezone_output, final_answer],
     max_steps=6,
     verbosity_level=1,
     grammar=None,
@@ -69,5 +119,5 @@ agent = CodeAgent(
     prompt_templates=prompt_templates
 )
 
-
+# Launch Gradio UI
 GradioUI(agent).launch()