用python写一个量化交易策略，当股票涨停后第四天收盘价高于涨停当天的价格就买入

import tushare as ts

# 获取股票数据
data = ts.get_hist_data('600519', start='2021-01-01', end='2021-12-31')

# 计算涨停价格
data['limit_price'] = data['close'] * 1.1

# 计算第四天收盘价
data['fourth_day_close'] = data['close'].shift(-4)

# 筛选符合条件的交易日
buy_data = data[(data['fourth_day_close'] > data['limit_price']) & (data['pct_chg'] == 10)]

# 输出买入日期和买入价格
for index, row in buy_data.iterrows():
print("买入日期：", index, "买入价格：", row['close'])