Python如何过滤特定警告？

Question

如何过滤python中特定模块的特定警告？
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ERROR:

cross_val_score(model, df_Xtrain,ytrain,cv=2,scoring='r2')

/usr/local/lib/python3.6/dist-packages/sklearn/linear_model/_ridge.py:148: LinAlgWarning: Ill-conditioned matrix (rcond=3.275e-20): result may not be accurate.
  overwrite_a=True).T

我的尝试

import warnings
warnings.filterwarnings(action='ignore',module='sklearn')

cross_val_score(model, df_Xtrain,ytrain,cv=2,scoring='r2')

This works but I assume it ignores all the warnings such as deprecation warnings. I would like to exclude only LinAlgWarning

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import warnings
warnings.filterwarnings(action='ignore', category='LinAlgWarning', module='sklearn')

有没有像这种过滤器特定警告的方法？

Answer 1

您必须将类别作为 WarningClass 传递，而不是在字符串中:from scipy.linalg import LinAlgWarningwarnings.filterwarnings(action='ignore', category=LinAlgWarning, module='sklearn')