np.copy

np.copy(a)

Returns a copy of a given Galois field array.

See: https://numpy.org/doc/stable/reference/generated/numpy.copy.html

Warning

This function returns an numpy.ndarray, not an instance of the subclass. To return a copy of the subclass, pass subok=True (for numpy version 1.19 and above) or use a.copy().

Examples

In [1]: GF = galois.GF(2**3)

In [2]: a = GF.Random(5, low=1); a
Out[2]: GF([7, 1, 4, 4, 4], order=2^3)

# NOTE: b is an ndarray
In [3]: b = np.copy(a); b
Out[3]: array([7, 1, 4, 4, 4], dtype=uint8)

In [4]: type(b)
Out[4]: numpy.ndarray

In [5]: a[0] = 0; a
Out[5]: GF([0, 1, 4, 4, 4], order=2^3)

# b is unmodified
In [6]: b
Out[6]: array([7, 1, 4, 4, 4], dtype=uint8)

In [7]: a.copy()
Out[7]: GF([0, 1, 4, 4, 4], order=2^3)