Update app.py

app.py

@@ -33,9 +33,30 @@ def get_current_time_in_timezone(timezone: str) -> str:
     except Exception as e:
         return f"Error fetching time for timezone '{timezone}': {str(e)}"
 
+@tool
+def exchange(base="GBP":str, target="EUR":str, amount:float)-> float: #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 calculates currency exchange rates.
+    Args:
+        base: original currency, as found in yfinance.  Examples: USD, EUR, GBP, CHF.
+        target: final currency, as found in yfinance.  Examples: USD, EUR, GBP, CHF.
+        amount: amount of the original currency 
+    """
+    import yfinance as yf
+
+    ticker = f"{base}{target}=X"
+    data = yf.Ticker(ticker)
+    price = data.history(period="1d")["Close"]
+    
+    if not price.empty:
+        rate = price.iloc[-1]
+    else:
+        raise ValueError("Exchange rate not found")
+    return rate * amount
 
 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' 
 
@@ -56,7 +77,7 @@ with open("prompts.yaml", 'r') as stream:
     
 agent = CodeAgent(
     model=model,
-    tools=[final_answer, get_current_time_in_timezone], ## add your tools here (don't remove final answer)
+    tools=[final_answer, get_current_time_in_timezone, exchange], ## add your tools here (don't remove final answer)
     max_steps=6,
     verbosity_level=1,
     grammar=None,