scikit-learn/sklearn/preprocessing/__init__.py

"""
The :mod:`sklearn.preprocessing` module includes scaling, centering,
normalization, binarization and imputation methods.
"""

from .data import Binarizer
from .data import KernelCenterer
from .data import MinMaxScaler
from .data import Normalizer
from .data import Scaler
from .data import StandardScaler
from .data import add_dummy_feature
from .data import binarize
from .data import normalize
from .data import scale
from .data import OneHotEncoder

from .label import label_binarize
from .label import LabelBinarizer
from .label import LabelEncoder

from .imputation import Imputer
from ._weights import balance_weights

__all__ = [
    'Binarizer',
    'Imputer',
    'KernelCenterer',
    'LabelBinarizer',
    'LabelEncoder',
    'MinMaxScaler',
    'Normalizer',
    'OneHotEncoder',
    'Scaler',
    'StandardScaler',
    'add_dummy_feature',
    'binarize',
    'normalize',
    'scale',
    'label_binarize',
]