[chaley]

Originally Posted by Josieb1

I've had another go now my file is in Documents and this time the prompt just returned

C:\Users\Jenny>

Did it add any txt formats?

EDIT: you didn't specify your library correctly.

Change the program to the following, being sure that the path to the library is correct.

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

print('Starting adding txt formats')
import tempfile
temporary_txt_file = tempfile.NamedTemporaryFile(suffix='txt', delete=False)

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

print('Starting loop')
for id in cache.all_book_ids():
        cache.add_format(id, 'TXT', temporary_txt_file)
print('Finished')

When you run the script you should see some output from the three print() statements.