error handing update

app.py

@@ -115,20 +115,27 @@ def calculate_kmeans_clusters(data, n_days, num_clusters):
 # Run the analysis
 if st.sidebar.button('Run Analysis'):
     # Fetch data
+    data = None
     try:
-        data = yf.download(ticker, start=start_date, end=end_date, auto_adjust=False)
-        if data.empty:
+        with st.spinner(f"Downloading data for {ticker}..."):
+            data = yf.download(ticker, start=start_date, end=end_date, auto_adjust=False, progress=False)
+        
+        if data is None or data.empty:
             st.error(f"No data found for ticker: {ticker}. Please check the symbol and date range.")
+            st.info("Try using a different ticker symbol or adjusting the date range.")
+            data = None
         else:
             # Flatten if multi-indexed columns
             if isinstance(data.columns, pd.MultiIndex):
                 data.columns = data.columns.get_level_values(0)
-            st.success("Data download successful!")
+            st.success(f"Data download successful! Retrieved {len(data)} data points.")
             st.dataframe(data.head())
     except Exception as e:
         st.error(f"Error downloading data: {e}")
+        st.info("This could be due to network issues or an invalid ticker symbol.")
+        data = None
 
-    if not data.empty:
+    if data is not None and not data.empty:
         # Calculate Pivot Points
         try:
             df_pivot = calculate_pivot_points(data.copy(), window_period)
@@ -346,6 +353,16 @@ if st.sidebar.button('Run Analysis'):
     else:
         st.write("No data found for the given ticker and date range.")
 
+else:
+    st.info("👆 Click 'Run Analysis' in the sidebar to start analyzing stock data!")
+    st.markdown("""
+    ### Getting Started:
+    1. Enter a stock ticker (e.g., AAPL, GOOGL, TSLA) or crypto pair (e.g., BTC-USD)
+    2. Set your desired date range
+    3. Adjust the analysis parameters if needed
+    4. Click 'Run Analysis' to generate the charts and insights
+    """)
+
 hide_streamlit_style = """
 <style>
 #MainMenu {visibility: hidden;}