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# Source code for astropy.nddata

    # Licensed under a 3-clause BSD style license - see LICENSE.rst

    """
    The `astropy.nddata` subpackage provides the `~astropy.nddata.NDData`
    class and related tools to manage n-dimensional array-based data (e.g.
    CCD images, IFU Data, grid-based simulation data, ...). This is more than
    just `numpy.ndarray` objects, because it provides metadata that cannot
    be easily provided by a single array.
    """

    from .nddata import *
    from .nddata_base import *
    from .nduncertainty import *
    from .flag_collection import *

    from .decorators import *

    from .mixins.ndarithmetic import *
    from .mixins.ndslicing import *
    from .mixins.ndio import *

    from .compat import *
    from .utils import *

    from .. import config as _config

    class Conf(_config.ConfigNamespace):
        """
        Configuration parameters for `astropy.nddata`.
        """

        warn_unsupported_correlated = _config.ConfigItem(
            True,
            'Whether to issue a warning if `~astropy.nddata.NDData` arithmetic '
            'is performed with uncertainties and the uncertainties do not '
            'support the propagation of correlated uncertainties.'
        )

        warn_setting_unit_directly = _config.ConfigItem(
            True,
            'Whether to issue a warning when the `~astropy.nddata.NDData` unit '
            'attribute is changed from a non-``None`` value to another value '
            'that data values/uncertainties are not scaled with the unit change.'
        )

    conf = Conf()