NBT BlockPalette Changer

NBTPaletteChanger.py

import nbtlib
from nbtlib.tag import *
import os
import json

def main():
    while True:
        IF = input('Input folder: \n') + '\\'

        string_in = input('String to find: \n')
        string_out = input('String to replace to: \n')

        # Get all files from InputFolder
        listfiles = os.listdir(IF)
        for filename in listfiles:
            if '.nbt' in filename:
                nbt_file = nbtlib.load(IF + filename, gzipped=True)
                # Open first Compound NBT
                file = nbt_file[""]
                #te = file['tile_entities']
                palette = file['palette']

                printfilename = 1
                # Change block textures
                for x in palette:
                    name = ''
                    name = x.get('Name')
                    if string_in in name:
                        if printfilename == 1:
                            print(f"\nFilename> {filename}")
                            printfilename = 0
                        replace = name.replace(string_in, string_out)
                        x.update({'Name': String(replace)})
                        print(f"    - Changed: {x.get('Name')}")
                nbt_file.save(IF + filename)

        q = input('\nNext folder? \n')
        if q.lower() == 'n':
            break

            
if __name__ == '__main__':
    main()

Tazz I'm getting an error on line 19, I just had to comment it out and change line 21 to use nbt_file instead of file (used the debugger to validate program behavior)

Example output after this change

Works like a charm ;)
Much thanks for the timesaver! ❤️