adding a warning to gb generator

                    OrthoCell_2.astype(float), Num.astype(int)))

        elif basis == 'fcc' or basis == 'bcc':

            ortho1, ortho2 = Ortho_fcc_bcc(basis, OrthoCell_1, OrthoCell_2)

            Volume_1 = (round(det(ortho1), 5))

            Num = Volume_1 * len(Basis(basis)) * 2

from numpy import dot, cross

from numpy.linalg import det, norm

import csl_generator as cslgen

import warnings

class GB_character:

        Base = cslgen.Basis(str(self.basis))

        Atoms = []

        tol = 0.001

        if V > 5e6:

            print("Warning! It may take a very long time to produce this cell!")

        # produce Atoms:

        for i in range(V):