@ruffus.transform(split_polynomials_list, ruffus.suffix(".poly"), ".roots")
def roots_for_poly_chunks(input_filename, output_filename):
    polys = open(input_filename, "rb").readlines()
    with open(output_filename, "wb") as fp:
        for line in polys:
            roots = numpy.roots([1] + [int(x) for x in line.strip().split()])
            for root in roots:
                if root.real >= 0 and root.imag >= 0:
                    if not INNER_ONLY or abs(root) <= 1:
                        fp.write("{} {}\n".format(root.real, root.imag))