Method __new__

numpy/ma/tests/test_subclassing.py:26–29

(cls,arr,info={})

    # Defines a generic np.ndarray subclass, that stores some metadata
    # in the  dictionary `info`.
    def __new__(cls,arr,info={}):
        x = np.asanyarray(arr).view(cls)
        x.info = info.copy()
        return x

    def __array_finalize__(self, obj):
        super().__array_finalize__(obj)