Python - Renombrar Archivos con una lista

# Import library

import os

import shutil

from pathlib import Path

script_dir = os.path.dirname(__file__)

# Declarate Variables

#path

rel_path = "3/."

path_initial = os.getcwd()+"/-1/"

path_initial_file = []

path_final = os.getcwd()+"/3/"

path_final_file = []

#archives

archives3 = []

archives1 = []

abs_file_path = os.path.join(script_dir, rel_path)

abs_path_initial = os.path.join(script_dir, path_initial)

# Functions

def saveFileNames1():

    for root, dirs, files in os.walk(abs_path_initial):

        for filename in files:

            #f_name,f_ext= os.path.splitext(filename)

            archives1.append(filename)

        #print(archives1)

def saveFileNames3():

    for root, dirs, files in os.walk(abs_file_path):

        for filename in files:

            archives3.append(filename)

        #print(archives3)

def renameFiles():

    #files_list = os.listdir(abs_path_initial)

    #path1=os.walk(abs_path_initial)

    """for f in os.listdir(path_initial):

        new_name= ('{}'.format(archives3))

        os.rename(Path(path_initial_file, path_final_file))"""

    for f in os.listdir(path_initial):

        if f in archives1:

            os.rename(path_initial_file, f+"a")

def joinPathWithFiles():

    for item in archives1:

        path_initial_file.append(os.path.join(script_dir, path_initial+item))

    for item3 in archives3:

        path_final_file.append(os.path.join(script_dir, path_final+item3))

    #print (path_initial_file)

    #print (path_final_file)

def prueba():

    #root = 'C:\\FOTOS\\centro operativo\\-1\\'

    for f in os.listdir(path_initial):

        fullpath = os.path.join(path_initial, f)

        stringfile=''.join(str(e) for e in archives3)

        for a in stringfile:

            os.rename(fullpath, fullpath.replace(a,stringfile))

# Run Functions

saveFileNames1()

saveFileNames3()

#joinPathWithFiles()

#renameFiles()

prueba()

print ("JAMZ RENAME")

print ("by Jhon Morales")

print ("ingrejhon@gmail.com")

print ("\n")

# Functions

def saveFileNames1():

    for root, dirs, files in os.walk(abs_path_initial):

        for filename1 in files:

            #f_name,f_ext= os.path.splitext(filename1)

            archives1.append(filename1)

        #print(archives1)

def saveFileNames2():

    for root, dirs, files in os.walk(abs_path_initial):

        for filename2 in files:

            #f_name,f_ext= os.path.splitext(filename1)

            archives2.append(filename2)

        #print(archives1)

def saveFileNames3():

    for root, dirs, files in os.walk(abs_file_path):

        for filename3 in files:

            archives3.append(filename3)

       # print(archives3)

def renameFiles():

    i=0

    j=0

    for filename in os.listdir(path_initial):

        fullpath = os.path.join(path_initial, filename)

        os.rename(fullpath, path_initial+"\\"+archives3[(i)])

        i+=1

    for filename2 in os.listdir(path_second):

        fullpath = os.path.join(path_second, filename2)

        os.rename(fullpath, path_second+"\\"+archives3[(j)])

        j+=1

# Run Functions

saveFileNames1()

saveFileNames3()

renameFiles()

print ("PROCESO FINALIZADO, PRESIONE UNA TECLA PARA SALIR")

os.system("pause")

import os

dataset_files = os.listdir('dataset') #Path de la carpeta que contiene los archivos que quieres renombrar

cont=0                                            #Opcional

for file in dataset_files:

    ruta = "dataset/%s"%file

    cont+=1

    if(isfile(ruta)):

        new_name ="dataset/ok_%d.jpg"%cont

        os.rename(ruta,new_name)