Square-1 Scrambler (bad working, but Ok)

import random as r


class Peca(object):
    pass


class Edge(Peca):
    def __init__(self, name):
        self.name = name

    def getPieceName(self):
        return self.name

    def __str__(self):
        return self.name


class Corner(Peca):
    def __init__(self, name):
        self.name = name

    def getPieceName(self):
        return self.name

    def __str__(self):
        return self.name


class SquareOne(object):
    a = Edge('a')
    b = Corner('b')
    c = Edge('c')
    d = Corner('d')
    e = Edge('e')
    f = Corner('f')
    g = Edge('g')
    h = Corner('h')
    #
    i = Edge('i')
    j = Corner('j')
    k = Edge('k')
    l = Corner('l')
    m = Edge('m')
    n = Corner('n')
    o = Edge('o')
    p = Corner('p')

    posicoes = [
        # Peças da camada U
        a, b, b, c, d, d, e, f, f, g, h, h,
        # Peças da camada D
        i, j, j, k, l, l, m, n, n, o, p, p]

    def U(self, movimento):
        TOOOOOOP_pieces = self.posicoes[0:12]
        ll = len(TOOOOOOP_pieces)

        if movimento > 0:
            for i in range(movimento):
                aux = [TOOOOOOP_pieces[ll - 1]]
                for j in range(ll):
                    aux.append(TOOOOOOP_pieces[j])
                    if j is (ll - 1):
                        break
                TOOOOOOP_pieces = aux
        elif movimento < 0:
            for i in range(movimento * (-1)):
                deleted = TOOOOOOP_pieces[0]
                TOOOOOOP_pieces.remove(deleted)
                TOOOOOOP_pieces.append(deleted)

        ultimos = self.posicoes[12:len(self.posicoes)]

        self.posicoes[0:12] = TOOOOOOP_pieces
        self.posicoes[12:24] = ultimos

    def D(self, movimento):
        botton_pieces = self.posicoes[12:24]
        ll = len(botton_pieces)

        if movimento > 0:
            for i in range(movimento):
                aux = [botton_pieces[ll - 1]]
                for j in range(ll):
                    aux.append(botton_pieces[j])
                    if j is (ll - 1):
                        break
                botton_pieces = aux
        elif movimento < 0:
            for i in range(movimento * (-1)):
                deleted = botton_pieces[0]
                botton_pieces.remove(deleted)
                botton_pieces.append(deleted)

        primeiros = self.posicoes[0:12]

        self.posicoes[0:12] = primeiros
        self.posicoes[12:24] = botton_pieces

    def barra(self):

        corte_de_U = self.posicoes[1:7]
        corte_de_D = self.posicoes[12:18]

        for i in range(6):
            aux = corte_de_U[i]
            aux2 = corte_de_D[i]
            corte_de_U[i] = aux2
            corte_de_D[i] = aux

        self.posicoes[1:7] = corte_de_U
        self.posicoes[12:18] = corte_de_D

    def isTravado(self):
        aux = self.posicoes
        if aux[0] is aux[1] or aux[6] is aux[7] or aux[17] is aux[18] or aux[23] is aux[12]:
            return True
        return False

    def __str__(self):
        toPrint = ''
        for i in range(self.posicoes.__len__()):
            toPrint += self.posicoes[i].__str__() + " "
            if i is 11:
                toPrint += "\n\n"
        return toPrint


class Embaralhador(object):
    moves = [-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6]
    sq1 = SquareOne()

    sorteadosOk = []

    def embaralhar(self):

        u = r.choice(self.moves)
        d = r.choice(self.moves)

        self.sq1.U(u)
        self.sq1.D(d)

        if self.sq1.isTravado():
            self.sq1.U(u*-1)
            self.sq1.D(d*-1)
            self.embaralhar()
        else:
            self.sq1.barra()
            self.sorteadosOk.append([u, d])

    def scramble(self):
        for i in range(5):
            self.embaralhar()

        s = ''
        oks = self.sorteadosOk

        for i in range(len(oks)):
            s += '(' + str(oks[i][0]) + ',' + str(oks[i][1]) + ')/'

        return s


print(Embaralhador().scramble())