Messy code to rename a folder of subtitles files from an extrernal source with names akin to the video files in it so they play automatically in MPV or VLC. I have to do this often since I download Japaense language subtitles from Netflix or other sources to match western created rips of anime and movies. The parts of the name cannot be obtained…

rename_sub_files.py

import os

dir = os.path.dirname(os.path.realpath(__file__))
print(dir)

before_number_name = input('Please provide file name before number.\nExample: Given "[Sokudo] The Melancholy of Haruhi Suzumiya 2006 - 01 [1080p BD][AV1][dual audio]",\npaste "[Sokudo] The Melancholy of Haruhi Suzumiya 2006 - ": ')
print()
after_number_name = input('Please provide file name after number.\nExample: Given "[Sokudo] The Melancholy of Haruhi Suzumiya 2006 - 01 [1080p BD][AV1][dual audio]",\npaste " [1080p BD][AV1][dual audio]": ')
print()

sub_file_type = input('Type "1" for SRT. Type "2" for ASS: ')
ext = ''
if sub_file_type == '1':
    ext = '.srt' 
elif sub_file_type == '2':
    ext = '.ass'
else:
    print('Please type 1 or 2 next time')
    exit(1)
print()

i = 1
for file in os.listdir(dir):
    filename = os.fsdecode(file)
    if filename.endswith(ext): 
        os.rename(f'{dir}/{filename}', f'{dir}/{before_number_name}{i:02d}{after_number_name}.ja{ext}')
        i += 1
print('Complete!')