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    In [1]:
    # 本代码由可视化策略环境自动生成 2022年3月25日 14:31
# 本代码单元只能在可视化模式下编辑。您也可以拷贝代码，粘贴到新建的代码单元或者策略，然后修改。


m1 = M.instruments.v2(
    start_date='2022-01-01',
    end_date='2022-03-25',
    market='CN_STOCK_A',
    instrument_list='',
    max_count=0
)

m2 = M.input_features.v1(
    features="""
# #号开始的表示注释，注释需单独一行
# 多个特征，每行一个，可以包含基础特征和衍生特征，特征须为本平台特征
return_5
return_10
return_20
avg_amount_0/avg_amount_5
avg_amount_5/avg_amount_20
rank_avg_amount_0/rank_avg_amount_5
rank_avg_amount_5/rank_avg_amount_10
rank_return_0
rank_return_5
rank_return_10
rank_return_0/rank_return_5
rank_return_5/rank_return_10
pe_ttm_0
"""
)

m3 = M.general_feature_extractor.v7(
    instruments=m1.data,
    features=m2.data,
    start_date='',
    end_date='',
    before_start_days=90
)

    ---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-1-43a3bc30c032> in <module>
      3 
      4 
----> 5 m1 = M.instruments.v2(
      6     start_date='2022-01-01',
      7     end_date='2022-03-25',

AttributeError: 'NoneType' object has no attribute 'list_date'