text: on the crossover of the short-term and long-term moving averages. If the short-term moving average is greater than the long-term moving average, the signal is 1 (buy), otherwise the signal is -1 (sell). Next request.            AI User (Stock Trader):        Instruction: Create a new column in the DataFrame that indicates the profit or loss for each trade based on the buy and sell signals and the defined stop loss and profit target.    Input: The stop loss and profit target as percentages.            AI Assistant (Python Programmer):        Solution: We can create a new column in the DataFrame that indicates the profit or loss for each trade based on the buy and sell signals and the defined stop loss and profit target. We need to pass the stop loss and profit target as percentages as arguments to this function. We can use the following code to create the new column:        ```    stop_loss = stop_loss_percent / 100    profit_target = profit_target_percent / 100        new_df['pnl'] = 0.0    buy_price = 0.0    for i in range(1, len(new_df)):        if new_df['signal'][i] == 1 and new_df['signal'][i-1] == -1:            buy_price = new_df['close'][i]        elif new_df['signal'][i] == -1 and new_df['signal'][i-1] == 1:            sell_price = new_df['close'][i]