Update app.py

app.py

@@ -116,11 +116,13 @@ def get_7day_stock_plot(symbol):
     try:
         yf_symbol = adjust_symbol_for_yfinance(symbol)
         end_date = datetime.datetime.today()
-        start_date = end_date - datetime.timedelta(days=14)  # 多拉一點，避免週末沒有資料
+        start_date = end_date - datetime.timedelta(days=14)  # account for weekends
         df = yf.download(yf_symbol, start=start_date.strftime('%Y-%m-%d'), end=end_date.strftime('%Y-%m-%d'), progress=False)
-        if df.empty or 'Close' not in df:
+        
+        if df.empty or 'Close' not in df.columns:
             return "<p class='text-danger'>📊 無法取得股價趨勢圖。</p>"
-        df = df.tail(7)  # 取最後7個交易日
+
+        df = df.tail(7)  # recent 7 trading days
         dates = df.index.strftime('%Y-%m-%d').tolist()
         closes = df['Close'].round(2).tolist()
 
@@ -128,16 +130,17 @@ def get_7day_stock_plot(symbol):
         fig.add_trace(go.Scatter(x=dates, y=closes, mode='lines+markers', name='Close Price'))
         fig.update_layout(
             title=f"📉 {symbol} 最近7日收盤價走勢 / 7-Day Closing Price Trend",
-            xaxis_title="日期",
-            yaxis_title="股價 (USD)",
+            xaxis_title="日期 / Date",
+            yaxis_title="收盤價 (USD)",
             template="plotly_white",
             height=400
         )
-        return fig.to_html(full_html=False)
+        return fig.to_html(full_html=False, include_plotlyjs='cdn', default_height="400px", default_width="100%")
     except Exception as e:
-        print(f"Error in get_7day_stock_plot: {e}")
+        print(f"[Plot Error] Failed to generate 7-day stock plot for {symbol}: {e}")
         return "<p class='text-danger'>📊 無法取得股價趨勢圖。</p>"
 
+
 @app.route("/", methods=["GET", "POST"])
 def index():
     result = {}