numpy.roll()
numpy.roll
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numpy.roll(a, shift, axis=None)[source] -
Roll array elements along a given axis.
Elements that roll beyond the last position are re-introduced at the first.
Parameters: a : array_like
Input array.
shift : int
The number of places by which elements are shifted.
axis : int, optional
The axis along which elements are shifted. By default, the array is flattened before shifting, after whic