How to parallelize a nested for loop of the Python?

Question

This is a loop code I have for my final year project. It works fine but it executes slower. I need to make this faster. It is a nested for loop so is there a method to parallelize this code?

        for user in users.each():
            count += 1
            if not os.path.isdir("Facial_images/face_rec/train/User_" + str(count)):
                os.makedirs("Facial_images/face_rec/train/User_" + str(count))
            for i in range(20):
                DBHelper.download_user_photo("User_" + str(count) + "/" + str(i) + ".jpg")

Answer 1

This is a loop code I have for my final year project. It works fine but it executes slower. I need to make this faster. It is a nested for loop so is there a method to parallelize this code?

        for user in users.each():
            count += 1
            if not os.path.isdir("Facial_images/face_rec/train/User_" + str(count)):
                os.makedirs("Facial_images/face_rec/train/User_" + str(count))
            for i in range(20):
                DBHelper.download_user_photo("User_" + str(count) + "/" + str(i) + ".jpg")