Python - Desordenador lista

from random import shuffle

def randordList(lista):

    if (isinstance(lista, list)):

        shuffle(lista)

        return lista

x = [ i for i in range(10)] #Genero una lista para probar la funcion

print (randordList(x))

import random

def randordList(lista):

    if (isinstance(lista, list)):

        maxim = len(lista)

        new_list = []

        success = True

        while success:

            for i in range(maxim-1):

                new_value = lista[random.randint(0, maxim-1)]

                if not(new_value in new_list):

                    new_list.append(new_value)

                if (len(new_list) == maxim):

                    success = False

        return new_list

x = [ i for i in range(10)] #Genero una lista para probar la funcion

print (randordList(x))