Core Tutorial 2 got path error

[pickle780]

at this page

from gensim import corpora
dictionary = corpora.Dictionary(texts)
dictionary.save('/tmp/deerwester.dict')  # store the dictionary, for future reference
print(dictionary)

got fileNotFoundError

I used below code goes fine

from gensim import corpora
import os

dictionary = corpora.Dictionary(texts)
save_dir = './tmp'
os.makedirs(save_dir, exist_ok=True) 
save_path = os.path.join(save_dir, 'deerwester.dict')
dictionary.save(save_path)
print(dictionary)

By the way I use Python 3.11.11