Issues

• FeatureUnion: error with transform_output="pandas" when transformer aggregates (index length mismatch)

  agyn-sandbox/scikit-learn#72 · Filter by author rowan-stein opened on Jan 13, 2026

• TypeError when supplying a boolean X to HuberRegressor fit

  agyn-sandbox/scikit-learn#69 · Filter by author rowan-stein opened on Dec 27, 2025

• Fix __repr__ for RepeatedKFold and RepeatedStratifiedKFold

  bug
  agyn-sandbox/scikit-learn#67 · Filter by author rowan-stein opened on Dec 27, 2025

• FeatureUnion with transform_output='pandas' fails when transformer changes row count (avoid forcing input index)

  agyn-sandbox/scikit-learn#66 · Filter by author rowan-stein opened on Dec 27, 2025

• strip_accents_unicode fails to strip accents from strings already in NFKD form

  agyn-sandbox/scikit-learn#65 · Filter by author rowan-stein opened on Dec 27, 2025

• KMeans gives slightly different result for n_jobs=1 vs. n_jobs > 1 — ensure consistent seeding across n_jobs

  agyn-sandbox/scikit-learn#63 · Filter by author rowan-stein opened on Dec 26, 2025

• ColumnTransformer.set_output ignores remainder when it's an estimator

  agyn-sandbox/scikit-learn#60 · Filter by author rowan-stein opened on Dec 26, 2025

• SFS: support iterable/generator cv without exhaustion (swev-id: scikit-learn__scikit-learn-25973)

  agyn-sandbox/scikit-learn#55 · Filter by author rowan-stein opened on Dec 26, 2025

• IterativeImputer: add fill_value and allow imputer instance for initial_strategy

  enhancement
  agyn-sandbox/scikit-learn#54 · Filter by author rowan-stein opened on Dec 26, 2025

• ROC curve thresholds can exceed 1 with probability estimates (non-regression tests + fix proposal)

  agyn-sandbox/scikit-learn#53 · Filter by author rowan-stein opened on Dec 26, 2025

• Optional dtype preservation in pandas output for subset-preserving transformers

  enhancement
  agyn-sandbox/scikit-learn#52 · Filter by author rowan-stein opened on Dec 26, 2025

• IsolationForest: feature names warning during fit when contamination != 'auto'

  agyn-sandbox/scikit-learn#51 · Filter by author rowan-stein opened on Dec 26, 2025

• HistGradientBoostingClassifier does not work with string target when early stopping turned on

  agyn-sandbox/scikit-learn#47 · Filter by author rowan-stein opened on Dec 26, 2025

• ZeroDivisionError in _sparse_fit for SVM with empty support_vectors_

  bug
  agyn-sandbox/scikit-learn#45 · Filter by author rowan-stein opened on Dec 26, 2025

• AttributeError: cross_val_predict(method='predict_proba') with MultiOutputClassifier (swev-id: scikit-learn__scikit-learn-14629)

  bug
  agyn-sandbox/scikit-learn#42 · Filter by author rowan-stein opened on Dec 26, 2025

• [BUG] Optics float min_samples NN instantiation

  agyn-sandbox/scikit-learn#41 · Filter by author casey-brooks opened on Dec 26, 2025

• Add joblib in show_versions

  agyn-sandbox/scikit-learn#37 · Filter by author rowan-stein opened on Dec 26, 2025

• IndexError thrown with LogisticRegressionCV and refit=False

  agyn-sandbox/scikit-learn#36 · Filter by author rowan-stein opened on Dec 26, 2025
  2

• IndexError: list index out of range in export_text when the tree only has one feature

  agyn-sandbox/scikit-learn#34 · Filter by author rowan-stein opened on Dec 26, 2025

• VotingClassifier fails at fit with sample_weight when an estimator is None

  agyn-sandbox/scikit-learn#31 · Filter by author rowan-stein opened on Dec 26, 2025

• Expose warm_start in IsolationForest

  agyn-sandbox/scikit-learn#30 · Filter by author rowan-stein opened on Dec 26, 2025

• Pipeline should implement __len__

  agyn-sandbox/scikit-learn#28 · Filter by author rowan-stein opened on Dec 26, 2025

• TypeError when supplying a boolean X to HuberRegressor fit

  agyn-sandbox/scikit-learn#27 · Filter by author rowan-stein opened on Dec 26, 2025

• GaussianMixture: fit_predict and predict disagree when n_init>1

  agyn-sandbox/scikit-learn#25 · Filter by author rowan-stein opened on Dec 26, 2025

• KBinsDiscretizer: kmeans fails due to unsorted bin_edges

  agyn-sandbox/scikit-learn#23 · Filter by author rowan-stein opened on Dec 26, 2025