SciPy

This is documentation for an old release of NumPy (version 1.15.1). Read this page in the documentation of the latest stable release (version > 1.17).

numpy.copy

numpy.copy(a, order='K')[source]

Return an array copy of the given object.

Parameters:
a : array_like

Input data.

order : {‘C’, ‘F’, ‘A’, ‘K’}, optional

Controls the memory layout of the copy. ‘C’ means C-order, ‘F’ means F-order, ‘A’ means ‘F’ if a is Fortran contiguous, ‘C’ otherwise. ‘K’ means match the layout of a as closely as possible. (Note that this function and ndarray.copy are very similar, but have different default values for their order= arguments.)

Returns:
arr : ndarray

Array interpretation of a.

Notes

This is equivalent to:

>>>
>>> np.array(a, copy=True)  

Examples

Create an array x, with a reference y and a copy z:

>>>
>>> x = np.array([1, 2, 3])
>>> y = x
>>> z = np.copy(x)

Note that, when we modify x, y changes, but not z:

>>>
>>> x[0] = 10
>>> x[0] == y[0]
True
>>> x[0] == z[0]
False

Previous topic

numpy.ascontiguousarray

Next topic

numpy.frombuffer