Python QMT系统引用talib遇到问题，帮看看怎么改？

Question

hisdict = ContextInfo.get_history_data(ContextInfo.line1,'1d','close',dividend_type=1)

sp12=np.array(hisdict)

ema_list=talib.EMA(sp12,timeperiod=12)

print(ema_list)

【2021-10-22 15:00:39.172】 start trading mode

【2021-10-22 15:00:39.172】 0D:\python\EMA.py_SH00030064Exception:real is not double

【2021-10-22 15:00:39.173】 Traceback (most recent call last):

File "D:\bin.x64\lib\site-packages\talib_init_.py", line 20, in wrapper

StopIteration

During handling of the above exception, another exception occurred:

Traceback (most recent call last):

File "", line 23, in handlebar

File "D:\bin.x64\lib\site-packages\talib_init_.py", line 24, in wrapper

File "_func.pxi", line 7076, in talib._ta_lib.EMA

Exception: real is not double

Answer 1

数据类型错误，检查一下histdict是什么类型数据，sp12数据是否符合EMA参数传递要求，可以输出一下看看，print(sp12)。