因果影响摘要- AttributeError：'NoneType‘对象没有属性'loc’

Question

有人能帮忙吗？这是我的密码。

df_ci = pd.DataFrame(df_ig.groupby(['Tanggal'])['INTERACTIONS IG'].sum())
df_ci

这就是数据文件的样子。

互动IG

唐加尔

2021-12-02 74.0

2021-12-03 326.0

2021-12-14 51.0

... ...

2022-05-30 80.0

2022-05-31 270.0

然后，我使用了因果影响包。

pre = ['2021-12-02', '2022-02-28']  
post = ['2022-03-01', '2022-05-31'] 
from causalimpact import CausalImpact
ci = CausalImpact(df_ci["INTERACTIONS IG"], pre, post)
ci.summary()

当我想显示对因果影响的总结、图解和推论时，它得到了一个错误：

~\AppData\Roaming\Python\Python38\site-packages\causalimpact\analysis.py in summary(self, output, width, path)
    727         confidence = "{}%".format(int((1 - alpha) * 100))
    728         post_period = self.params["post_period"]
--> 729         post_inf = self.inferences.loc[post_period[0] : post_period[1], :]
    730         post_point_resp = post_inf.loc[:, "response"]
    731         post_point_pred = post_inf.loc[:, "point_pred"]

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

请帮帮我，谢谢。

Answer 1

在ci.run()之前打电话给ci.summary()。

ci = CausalImpact(df_ci["INTERACTIONS IG"], pre, post)
ci.run()  # Add this
ci.summary()