阿里非示例程序出错了，求解

from tqsdk import TqApi, TqAuth, TargetPosTask,TqBacktest
from datetime import datetime,date 
import time
symbol = "SHFE.ag2201"  # 合约代码
close_hour, close_minute = 14, 50  # 平仓时间
api = TqApi(backtest=TqBacktest(start_dt=date(2021, 5, 1), end_dt=date(2021, 10, 1)),auth=TqAuth("信易账户", "密码")
quote = api.get_quote(symbol) # 获取指定合约的盘口行情
klines = api.get_kline_serial(symbol, 24 * 60 * 60)  # 获取日线
position = api.get_position(symbol)  # 持仓信息
target_pos = TargetPosTask(api, symbol)  # 目标持仓
top_rail = klines.high.iloc[-2]  # 上轨: 昨日高点
bottom_rail = klines.low.iloc[-2]  # 下轨: 昨日低点
print("上轨:", top_rail, ",下轨:", bottom_rail, ",昨日收盘价:", klines.close.iloc[-2], ",今日开盘价:", klines.open.iloc[-1])
while True:
    api.wait_update()
    if api.is_changing(klines.iloc[-1], "datetime"):  # 如果产生一根新日线 (即到达下一个交易日): 重新获取上下轨
        top_rail = klines.high.iloc[-2]
        bottom_rail = klines.low.iloc[-2]
        print("上轨:", top_rail, ",下轨:", bottom_rail, ",昨日收盘价:", klines.close.iloc[-2], ",今日开盘价:", klines.open.iloc[-1])
    if api.is_changing(quote, "last_price"):  # 如果行情最新价发生变化
        print("当前最新价", quote.last_price)
        # 开仓突破
        if quote.last_price > top_rail and position.pos_long == 0:  # 如果价格突破上轨: 买入开仓
            print("最新价:", quote.last_price, ", 价格突破上轨,买入开仓")
            target_pos.set_target_volume(3)  # 设置目标持仓手数，将指定合约调整到目标头寸
        elif quote.last_price < bottom_rail and position.pos_short == 0:  # 如果价格跌破下轨: 卖出开仓
            print("最新价:", quote.last_price, ", 价格跌破下轨, 卖出开仓")
            target_pos.set_target_volume(-3)
        # 平仓止损: 当价格 向上突破上轨 或 向下突破下轨 后, 再次回破当日开盘价
        if (quote.highest > top_rail and quote.last_price <= quote.open) or (
                quote.lowest < bottom_rail and quote.last_price >= quote.open):
            print("平仓止损")
            target_pos.set_target_volume(0)
    if api.is_changing(quote, "datetime"):
        now_time = datetime.strptime(quote.datetime, "%Y-%m-%d %H:%M:%S.%f")  # 获取当前的行情时间
        if now_time.hour == close_hour and now_time.minute >= close_minute:  # 到达平仓时间: 平仓
            print("临近本交易日收盘: 平仓")
            target_pos.set_target_volume(0)
            deadline = time.time() + 60  # 设置截止时间为当前时间的60秒以后
            while api.wait_update(deadline=deadline):  # 等待60秒
                pass
            api.close()  # 关闭api
            break  # 退出while循环

File “D:\Strategy\阿狸4.py”, line 7
quote = api.get_quote(symbol) # 获取指定合约的盘口行情
^
SyntaxError: invalid syntax

[Finished in 93ms]

编译总是出现这个问题，不解