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[BUG] Fix Sklearn Models detection by safely importing openml-sklearn #1556

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[BUG] Fix Sklearn Models detection by safely importing openml-sklearn #1556

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e153a87
safely imported openml-sklearn
EmanAbdelhaleem Dec 24, 2025
ea748d0
safely imported openml-sklearn in both flows and models
EmanAbdelhaleem Dec 25, 2025
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12 changes: 10 additions & 2 deletions openml/extensions/functions.py
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
# License: BSD 3-Clause
from __future__ import annotations

import importlib.util
from typing import TYPE_CHECKING, Any

# Need to implement the following by its full path because otherwise it won't be possible to
Expand All @@ -16,8 +17,7 @@
SKLEARN_HINT = (
"But it looks related to scikit-learn. "
"Please install the OpenML scikit-learn extension (openml-sklearn) and try again. "
"For more information, see "
"https://github.com/openml/openml-sklearn?tab=readme-ov-file#installation"
"You can use `pip install openml-sklearn` for installation."
)


Expand Down Expand Up @@ -58,6 +58,10 @@ def get_extension_by_flow(
-------
Extension or None
"""
# import openml_sklearn to register SklearnExtension
if importlib.util.find_spec("openml_sklearn"):
import openml_sklearn # noqa: F401

candidates = []
for extension_class in openml.extensions.extensions:
if extension_class.can_handle_flow(flow):
Expand Down Expand Up @@ -103,6 +107,10 @@ def get_extension_by_model(
-------
Extension or None
"""
# import openml_sklearn to register SklearnExtension
if importlib.util.find_spec("openml_sklearn"):
import openml_sklearn # noqa: F401

candidates = []
for extension_class in openml.extensions.extensions:
if extension_class.can_handle_model(model):
Expand Down