[Josieb1]

Thank you. This is the name of the actual notepad file. I did select py as the save extension. I never amended the txt file extension

calibre-add-format-blank-txt.py

The file is now in the main Documents folder so the path is this

C:\Users\Jenny\Documents\calibre-add-format-blank-txt.py

so as far as I can tell my command prompt should be this

calibre-debug.exe C:\Users\Jenny\Documents\calibre-add-format-blank-txt.py

the Code within the Notepad file is as below:-

def init_cache(library_path):
        from calibre.db.backend import DB
        from calibre.db.cache import Cache
        backend = DB(library_path)
        cache = Cache(backend)
        cache.init()
        return cache

import tempfile
temporary_txt_file = tempfile.NamedTemporaryFile(suffix='txt', delete=False)

cache = init_cache(library_path = 'C:\\Users\\Jenny\\Documents\\')


for id in cache.all_book_ids():
        cache.add_format(id, 'TXT', temporary_txt_file)

Does that look alright? I am sorry I just don't understand all this