Update app.py

app.py

@@ -1,61 +1,76 @@
-from smolagents import CodeAgent,DuckDuckGoSearchTool, HfApiModel,load_tool,tool
+from smolagents import CodeAgent, DuckDuckGoSearchTool, HfApiModel, load_tool, tool
 import datetime
 import requests
 import pytz
 import yaml
 from tools.final_answer import FinalAnswerTool
-
 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 ?"
 
+
+# Tool to get current local 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.
+    """
+    A tool that fetches the current local time in a specified timezone.
+    
     Args:
-        timezone: A string representing a valid timezone (e.g., 'America/New_York').
+        timezone (str): A valid timezone string (e.g., 'America/New_York').
+    
+    Returns:
+        str: A message with the current local time or an error message if the timezone is invalid.
     """
     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)}"
 
+# Calculator tool that evaluates mathematical expressions
+@tool
+def calculator_tool(expression: str) -> str:
+    """
+    A calculator tool that evaluates a mathematical expression.
+    
+    Args:
+        expression (str): A string representing a mathematical expression.
+                          Supported operators: +, -, *, /, **, and %.
+    
+    Returns:
+        str: The result of the calculation as a string, or an error message if evaluation fails.
+    """
+    try:
+        # Evaluate the expression with a restricted environment for safety.
+        result = eval(expression, {"__builtins__": {}}, {})
+        if isinstance(result, float) and result.is_integer():
+            result = int(result)
+        return str(result)
+    except Exception as e:
+        return f"Error evaluating expression: {e}"
 
+# Instantiate the final answer tool
 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' 
-
+# Create an instance of the language model
 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,
+    max_tokens=2096,
+    temperature=0.5,
+    model_id='Qwen/Qwen2.5-Coder-32B-Instruct',
+    custom_role_conversions=None,
 )
 
-
-# Import tool from Hub
+# Import tool from Hub (e.g., for image generation)
 image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_code=True)
 
+# Load prompt templates from YAML file
 with open("prompts.yaml", 'r') as stream:
     prompt_templates = yaml.safe_load(stream)
     
+# Create the CodeAgent with the desired tools. Notice that we add our calculator_tool
 agent = CodeAgent(
     model=model,
-    tools=[final_answer], ## add your tools here (don't remove final answer)
+    tools=[final_answer, calculator_tool],  # You can add more tools here
     max_steps=6,
     verbosity_level=1,
     grammar=None,
@@ -65,5 +80,5 @@ agent = CodeAgent(
     prompt_templates=prompt_templates
 )
 
-
-GradioUI(agent).launch()
+# Launch the Gradio UI for interacting with the agent
+GradioUI(agent).launch()