Add additional tools and update CodeAgent in app.py

Updated the tools used by the agent in app.py to expand its capabilities. In detail:
- Added the DuckDuckGoSearchTool to perform web searches.
- Loaded the image_generation_tool from the Hub to enable image generation.
- Retained the mandatory FinalAnswerTool.
- Kept the dummy tool my_custom_tool for users to customize as needed.
- Included the get_current_time_in_timezone tool to fetch the local time for a given timezone.
- Updated the "tools" parameter in the CodeAgent creation to include all the new tools.

These changes facilitate experimentation and customization of the agent, enabling it to perform tasks like web searches, image generation, and time checking, among others.

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
@@ -7,25 +7,26 @@ 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 !
+# Below is an example of a dummy tool. Impress 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 
+def my_custom_tool(arg1: str, arg2: int) -> str:
+    """A tool that does nothing yet.
+    
     Args:
         arg1: the first argument
         arg2: the second argument
     """
-    return "What magic will you build ?"
+    return "What magic will you build?"
 
 @tool
 def get_current_time_in_timezone(timezone: str) -> str:
     """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').
     """
     try:
-        # Create timezone object
+        # Create a 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")
@@ -33,29 +34,38 @@ def get_current_time_in_timezone(timezone: str) -> str:
     except Exception as e:
         return f"Error fetching time for timezone '{timezone}': {str(e)}"
 
-
 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' 
+# If the agent does not answer, the model might be 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,
+    max_tokens=2096,
+    temperature=0.5,
+    model_id='Qwen/Qwen2.5-Coder-32B-Instruct',
+    custom_role_conversions=None,
 )
 
-
-# Import tool from Hub
+# Load the image generation tool from the Hub
 image_generation_tool = load_tool("agents-course/text-to-image", trust_remote_code=True)
 
+# Create an instance of DuckDuckGoSearchTool for web searches
+duckduckgo_tool = DuckDuckGoSearchTool()
+
 with open("prompts.yaml", 'r') as stream:
     prompt_templates = yaml.safe_load(stream)
     
+# Create our CodeAgent, adding all available tools
 agent = CodeAgent(
     model=model,
-    tools=[final_answer], ## add your tools here (don't remove final answer)
+    tools=[
+        final_answer,                  # Mandatory tool
+        my_custom_tool,                # Dummy tool for customization
+        get_current_time_in_timezone,  # Tool to get the current time for a given timezone
+        image_generation_tool,         # Tool for image generation
+        duckduckgo_tool                # Tool for web searches
+    ],
     max_steps=6,
     verbosity_level=1,
     grammar=None,
@@ -65,5 +75,4 @@ agent = CodeAgent(
     prompt_templates=prompt_templates
 )
 
-
 GradioUI(agent).launch()