Update app.py

app.py

@@ -14,13 +14,13 @@ This app demonstrates an extended MACD-RSI based trading strategy on SPY with th
 - **Dynamic Trailing Stop:** Each open position is updated with a trailing stop.
 - **Configurable Parameters:** Adjust strategy parameters via the sidebar.
 - **Buy Rule:**  
-  Buy 15% of available cash when:
+  Buy a fraction of available cash when:
   - The MACD line crosses above its signal line.
   - RSI is below 50.
-  - No buy has been executed in the last 2 days.
+  - No buy has been executed in the last few days.
 - **Sell Rule:**  
   For each position:
-  - **Partial Sell:** Sell 40% of the position when the price reaches 1.08× the entry price and RSI is above 50.
+  - **Partial Sell:** Sell a fraction of the position when the price reaches a target multiple of the entry price and RSI is above 50.
   - **Trailing Stop Exit:** If the price falls below the position’s dynamic trailing stop, sell the entire position.
 """)
 
@@ -43,8 +43,9 @@ data_load_state.text("Loading SPY data...done!")
 
 # Calculate technical indicators: MACD and RSI
 macd_indicator = MACD(close=data['Close'])
-data['MACD'] = macd_indicator.macd()
-data['MACD_signal'] = macd_indicator.macd_signal()
+# Squeeze the returned values to ensure a 1-dimensional array
+data['MACD'] = pd.Series(macd_indicator.macd().squeeze(), index=data.index)
+data['MACD_signal'] = pd.Series(macd_indicator.macd_signal().squeeze(), index=data.index)
 
 rsi_indicator = RSIIndicator(close=data['Close'], window=14)
 data['RSI'] = rsi_indicator.rsi()