fixed imports and added a wikipedia and reverse string tool

requirements.txt

@@ -1,3 +1,4 @@
 gradio
 requests
-smolagents
+smolagents
+duckduckgo-search

smolagents_test_new.py

@@ -1,11 +1,20 @@
 from huggingface_hub import login
-from smolagents import CodeAgent, InferenceClientModel, DuckDuckGoSearchTool
+from smolagents import CodeAgent, InferenceClientModel, DuckDuckGoSearchTool, WikipediaSearchTool
+from smolagents import tool
 
 
 
+@tool
+def reverse_string(input_string: str) -> str:
+    """This is a tool that given a string, returns the reversed string.
+    
+    Args:
+        input_string (str): The string to reverse.
+    
+    """
+    return input_string[::-1]
 
-
-agent = CodeAgent(tools=[DuckDuckGoSearchTool()], model=InferenceClientModel())
+agent = CodeAgent(tools=[DuckDuckGoSearchTool(),reverse_string,WikipediaSearchTool()], model=InferenceClientModel())
 
 
 if __name__ == "__main__":