client = Quotes.factory(market='std')
rd = client.minutes('159995','20200130')  # 这条记录不存在为啥会报异常？返回None就好了吧


Traceback (most recent call last):
  File "d:\XXX\Code\backtester\backtest.py", line 60, in _prepareData
    rd = client.minutes(s, di.strftime('%Y%m%d'))  # 每天每分钟的历史交易记录
  File "D:\ProgramData\Anaconda3\lib\site-packages\tenacity\__init__.py", line 324, in wrapped
    return self(f, *args, **kw)
  File "D:\ProgramData\Anaconda3\lib\site-packages\tenacity\__init__.py", line 404, in __call_
city\__init__.py", line 361, in iter
    raise retry_exc from fut.exception()
tenacity.RetryError: RetryError[<Future at 0x23561ed3190 state=finished returned DataFrame>]