Add weather, math solver, and joke generator tools to agent

- Implemented `get_weather` tool to fetch current weather for a city
- Added `solve_math` tool to evaluate basic mathematical expressions
- Integrated `get_joke` tool to fetch random jokes from an API
- Updated `CodeAgent` to include the new tools
- Ensured proper exception handling and API response formatting

app.py

@@ -1,22 +1,48 @@
-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 !
+# Custom Tools
+
+@tool
+def get_weather(city: str) -> str:
+    """Fetches the current weather for a given city.
+    Args:
+        city: The name of the city.
+    """
+    try:
+        response = requests.get(f"https://wttr.in/{city}?format=%C+%t")
+        return f"The current weather in {city} is: {response.text}"
+    except Exception as e:
+        return f"Error fetching weather for {city}: {str(e)}"
+
+
 @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 
+def solve_math(expression: str) -> str:
+    """Solves basic math expressions.
     Args:
-        arg1: the first argument
-        arg2: the second argument
+        expression: A math expression in string format (e.g., "2+2*3").
     """
-    return "What magic will you build ?"
+    try:
+        result = eval(expression, {"__builtins__": None}, {})
+        return f"The result is {result}"
+    except Exception as e:
+        return f"Error solving math expression '{expression}': {str(e)}"
+
+
+@tool
+def get_joke() -> str:
+    """Fetches a random joke."""
+    try:
+        response = requests.get("https://official-joke-api.appspot.com/random_joke").json()
+        return f"{response['setup']} {response['punchline']}"
+    except Exception as e:
+        return f"Error fetching joke: {str(e)}"
+
 
 @tool
 def get_current_time_in_timezone(timezone: str) -> str:
@@ -36,22 +62,23 @@ def get_current_time_in_timezone(timezone: str) -> str:
 
 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,
+    max_tokens=2096,
+    temperature=0.5,
+    model_id='Qwen/Qwen2.5-Coder-32B-Instruct',  # Update this if needed
+    custom_role_conversions=None,
 )
 
-
-# Import tool from Hub
+# Import tool from Hugging Face Hub
 image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_code=True)
 
+# Load prompt templates
 with open("prompts.yaml", 'r') as stream:
     prompt_templates = yaml.safe_load(stream)
-    
+
+# Initialize agent with custom tools
 agent = CodeAgent(
     model=model,
-    tools=[final_answer], ## add your tools here (don't remove final answer)
+    tools=[final_answer, get_weather, solve_math, get_joke, get_current_time_in_timezone],  # Added new tools
     max_steps=6,
     verbosity_level=1,
     grammar=None,
@@ -61,5 +88,5 @@ agent = CodeAgent(
     prompt_templates=prompt_templates
 )
 
-
-GradioUI(agent).launch()
+# Launch UI
+GradioUI(agent).launch()