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/NumPy 1.17

numpy.matrix.base

attribute

matrix.base

Base object if memory is from some other object.

Examples

The base of an array that owns its memory is None:

>>> x = np.array([1,2,3,4])
>>> x.base is None
True

Slicing creates a view, whose memory is shared with x:

>>> y = x[2:]
>>> y.base is x
True

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https://docs.scipy.org/doc/numpy-1.17.0/reference/generated/numpy.matrix.base.html