使用Python + MetaTrader5库（适合自动化交易）平仓MT5 二分之一订单

import MetaTrader5 as mt5

if not mt5.initialize():
    print("MT5初始化失败")
    quit()

positions = mt5.positions_get()
total_volume = sum(pos.volume for pos in positions)
close_volume = total_volume * 0.5

for pos in positions:
    if close_volume <= 0:
        break
    
    if pos.volume >= close_volume:
        request = {
            "action": mt5.TRADE_ACTION_DEAL,
            "position": pos.ticket,
            "symbol": pos.symbol,
            "volume": close_volume,
            "type": mt5.ORDER_TYPE_SELL if pos.type == mt5.ORDER_TYPE_BUY else mt5.ORDER_TYPE_BUY,
            "price": mt5.symbol_info_tick(pos.symbol).ask if pos.type == mt5.ORDER_TYPE_BUY else mt5.symbol_info_tick(pos.symbol).bid,
            "deviation": 10,
        }
        mt5.order_send(request)
        break
    else:
        request = {
            "action": mt5.TRADE_ACTION_DEAL,
            "position": pos.ticket,
            "symbol": pos.symbol,
            "volume": pos.volume,
            "type": mt5.ORDER_TYPE_SELL if pos.type == mt5.ORDER_TYPE_BUY else mt5.ORDER_TYPE_BUY,
            "price": mt5.symbol_info_tick(pos.symbol).ask if pos.type == mt5.ORDER_TYPE_BUY else mt5.symbol_info_tick(pos.symbol).bid,
            "deviation": 10,
        }
        mt5.order_send(request)
        close_volume -= pos.volume

mt5.shutdown()
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