def idd_copycols(A, k, idx):
A = np.asfortranarray(A)<EOL>return _id.idd_copycols(A, k, idx)<EOL>
Reconstruct skeleton matrix from real ID.

:param A:
    Original matrix.
:type A: :class:`numpy.ndarray`
:param k:
    Rank of ID.
:type k: int
:param idx:
    Column index array.
:type idx: :class:`numpy.ndarray`

:return:
    Skeleton matrix.
:rtype: :class:`numpy.ndarray`