【平台使用】3.0版本内存问题
由bqp8687s创建,最终由small_q 被浏览 8 用户
import dai
import pandas as pd
import numpy as np
import math
import warnings
from datetime import datetime, timedelta
from bigmodule import M
from bigtrader.finance.commission import PerOrder
"""----------------------------参数设置----------------------------------"""
sd = '2010-01-01'
#ed = '2022-01-01'
ed = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
sql = f"""
SELECT
date,
instrument,
total_market_cap,
roe_avg_ttm,
pe_ttm,
pb,
name,
gross_profit_ttm,
m_nanavg(gross_profit_ttm,1440)/m_nanstd(gross_profit_ttm,1440) AS WD,
m_avg(volume,20),
sw2014_level2
FROM
cn_stock_prefactors
WHERE
st_status = 0
"""
date = dai.query(sql,filters={'date':[sd,ed]}).df().dropna()
date['market_cap_rank'] = date['total_market_cap'].rank(pct=True)
df = date[(date['market_cap_rank'] >= 0.4) & (date['market_cap_rank'] <= 0.6)]
这个查询应该是不复杂的吧。但是它却显示 OutOfMemoryException: Out of Memory Error: failed to pin block of size 256.0 KiB (6.0 GiB/6.0 GiB used)求解