undefinedmetricwarning: precision is ill-defined and being set to 0.0 due to no predicted samples.

Question

Problem :

I am facing bellow strange error

undefinedmetricwarning: precision is ill-defined and being set to 0.0 due to no predicted samples.

Answer 1

I had faced similar issue in the past.

 Please use the bellow lines of code

from sklearn.metrics import f1_score
metrics.f1_score(y_test, y_pred, labels=np.unique(y_pred))

This will remove your warning and will give you the result you wanted