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pythonwarningssuppress-warnings

Python how to filter specific warning?

How to filter the specific warning for specific module in python?

MWE

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

My attempt

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

Required Like

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

Is there a way like this filter specific warning?

Solution

  • You have to pass category as a WarningClass not in a String:

    from scipy.linalg import LinAlgWarning

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