Python pass class weights to SequentialFeatureSelector?

from mlxtend.feature_selection import SequentialFeatureSelector as SFS

xgboost classifier

XGB = xgboost.XGBClassifier(num_class = 3)

Sets features selection

SFSres = SFS(XGB, k_features=8,cv=5)

Trying to pass class weights for feature selection

SFSres =, train_labels, fit_params={'sample_weight':weights})


TypeError: fit() got an unexpected keyword argument ‘fit_params’

How to pass class weights to feature selection?


“the documentation is incorrect and needs to be updated”


fit(train_data, train_labels, sample_weight=weights)

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