dtype.hasobject Boolean indicating whether this dtype contains any reference-counted objects in any fields or sub-dtypes

chararray.swapaxes(axis1, axis2) Return a view of the array with axis1 and axis2

numpy.ma.size(obj, axis=None)

Polynomial.roots()

numpy.core.records.fromfile(fd, dtype=None, shape=None, offset=0, formats=None, names=None, titles=None, aligned=False, byteorder=None)

numpy.polynomial.hermite_e.hermevander3d(x, y, z, deg)

Laguerre.roots()

numpy.eye(N, M=None, k=0, dtype=)

numpy.ma.common_fill_value(a, b)

numpy.polynomial.polynomial.polyfromroots(roots)