Dj >ddlmZddlmZdgZGddeZdZy)) attrgetter)update_wrapperif_has_delegateceZdZdZdZddZy)_IffHasDelegateasImplements a conditional property using the descriptor protocol. Using this class to create a decorator will raise an ``AttributeError`` if none of the delegates (specified in ``delegate_names``) is an attribute of the base object or the first found delegate does not have an attribute ``attribute_name``. This allows ducktyping of the decorated method based on ``delegate.attribute_name``. Here ``delegate`` is the first item in ``delegate_names`` for which ``hasattr(object, delegate) is True``. See https://docs.python.org/3/howto/descriptor.html for an explanation of descriptors. c8||_||_t||yN)fndelegate_namesr)selfr r s aC:\Crop_Prediction\Backend\crop-ai-system\venv\Lib\site-packages\pmdarima/utils/metaestimators.py__init__z_IffHasDelegate.__init__s, tR NcBjD]} t|ntjdfd}t|j|S#t$rY_wxYw)Nc0jg|i|Sr )r )argskwargsobjr s r z)_IffHasDelegate.__get__..5swtwws'DT'DV'Dr)r rAttributeErrorrr )r rtype delegate_nameouts`` r __get__z_IffHasDelegate.__get__%s ?"&!4!4 9 -J}-c2  94 4..r23C8EsDGG$ &sA%% A10A1r )__name__ __module__ __qualname____doc__rrrr rrs !rrcjttr tttsffdS)aWrap a delegated instance attribute function. Creates a decorator for methods that are delegated in the presence of a results wrapper. This enables duck-typing by ``hasattr`` returning True according to the sub-estimator. This function was adapted from scikit-learn, which defines ``if_delegate_has_method``, but operates differently by injecting methods not based on method presence, but by delegate presence. Examples -------- >>> from pmdarima.utils.metaestimators import if_has_delegate >>> >>> class A(object): ... @if_has_delegate('d') ... def func(self): ... return True >>> >>> a = A() >>> # the delegate does not exist yet >>> assert not hasattr(a, 'func') >>> # inject the attribute >>> a.d = None >>> assert hasattr(a, 'func') and a.func() Parameters ---------- delegate : string, list of strings or tuple of strings Name of the sub-estimator that can be accessed as an attribute of the base object. If a list or a tuple of names are provided, the first sub-estimator that is an attribute of the base object will be used. ct|Sr )r)r delegates r rz!if_has_delegate..bsob(3r) isinstancelisttuple)r#s`r rr;s0D(D!? h &; 33rN)operatorr functoolsr__all__objectrrr rr r+s+ $  (f(V'4r