Enhance error messages and docstring in fetch_stocks.py

Stock-Analysis/fetch_stocks.py

@@ -6,7 +6,15 @@ class StockFetcher:
 
     @staticmethod
     def fetch_stock_data(stock):
-        """Fetch stock data from Yahoo Finance with improved error handling."""
+        """
+        Fetch stock data from Yahoo Finance with improved error handling.
+
+        Args:
+            stock (str): Stock symbol to fetch.
+
+        Returns:
+            tuple: (recommendationMean, stock) if successful, None otherwise.
+        """
         try:
             ticker = yf.Ticker(stock)
             info = ticker.info
@@ -23,29 +31,32 @@ def fetch_stock_data(stock):
             return (rate, stock)
 
         except ValueError as e:
+            print(f"ValueError: Could not fetch data for {stock}. {e}")
             logging.getLogger(__name__).error(
                 f"[ValueError] Unable to fetch data for '{stock}': {e}. "
                 f"Possible causes: Invalid stock symbol or empty API response."
             )
 
         except KeyError as e:
+            print(f"KeyError: Missing expected data for {stock}. {e}")
             logging.getLogger(__name__).error(
                 f"[KeyError] Missing expected data for '{stock}': {e}. "
                 f"The API might have changed or the stock does not provide recommendation data.",
                 exc_info=True
             )
 
         except URLError as e:
+            print(f"Network error: Could not fetch data for {stock}. {e}")
             logging.getLogger(__name__).error(
                 f"[URLError] Network issue while fetching '{stock}': {e}. "
                 f"Please check your internet connection or try again later."
             )
 
         except Exception as e:
+            print(f"Oops! Could not fetch data for {stock}. Please check your stock symbol or internet connection.")
             logging.getLogger(__name__).error(
                 f"[Unexpected Error] Failed to fetch '{stock}': ({type(e).__name__}) {e}",
                 exc_info=True
             )
 
         return None
-