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性能告警cannot map directly to c-types

由zjmafg创建,最终由small_q 被浏览 6 用户

请问:在回测时报性能告警,是什么原因,如何避免?

/usr/local/python3/lib/python3.8/site-packages/pandas/core/generic.py:2605: PerformanceWarning:

your performance may suffer as PyTables will pickle object types that it cannot

map directly to c-types [inferred_type->mixed,key->block3_values] [items->Index(['instrument', 'name', 'suspend_type', 'suspend_reason', 'suspended'], dtype='object')]

pytables.to_hdf(

\

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回测pandas
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  • 这是quantchat给出的答复
  • undefined
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