test.py

import os

def create_txt_for_mp3():
    for file in os.listdir():
        if file.endswith(".mp3"):
            file_name_without_extension, _ = os.path.splitext(file)
            with open(file_name_without_extension + '.txt', 'w') as f:
                f.write(file_name_without_extension)

create_txt_for_mp3()