Update app.py

app.py

@@ -3,20 +3,35 @@ import datetime
 import requests
 import pytz
 import yaml
+import yfinance
 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
+def get_stock_value_on_specific_day(ticker:str, date_str:str)-> 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 does nothing yet 
+    """A tool that fetches stock value for a certain day
     Args:
-        arg1: the first argument
-        arg2: the second argument
+        ticker: stock ticker
+        date_str: date of stock value
+
     """
-    return "What magic will you build ?"
+    try:
+        date = datetime.strptime(date_str, "%Y-%m-%d")
+        next_date = date + timedelta(days=1)
+
+        df = yf.download(ticker, start=date_str, end=next_date.strftime("%Y-%m-%d"), progress=False)
+        
+        if df.empty:
+            return f"No data found for {ticker} on {date_str} (possibly a weekend/holiday)"
+        else:
+            close_price = df['Close'].iloc[0]
+            return f"{ticker} closing price on {date_str}: ${close_price:.2f}"
+            
+    except Exception as e:
+        return f"Error fetching stock value '{ticker}': {str(e)}"
 
 @tool
 def get_current_time_in_timezone(timezone: str) -> str: