numpy.diag_indices_from(arr)

numpy.polynomial.legendre.legdomain = array([-1, 1])

poly1d.integ(m=1, k=0)

numpy.linalg.lstsq(a, b, rcond=-1)

classmethod Polynomial.basis(deg, domain=None, window=None)

Polynomial.integ(m=1, k=[], lbnd=None)

numpy.var(a, axis=None, dtype=None, out=None, ddof=0, keepdims=False)

dtype.base

numpy.polynomial.polynomial.polyfit(x, y, deg, rcond=None, full=False, w=None)

chararray.isdecimal()