Benepar model path issue

[dcavar]

The default and hard-coded path should be made a variable or search the home-directory first. It triggers an error if the folder does not exist:

# Create the nltk_data path if it does not exist. In this path the benepar models will be saved.
nltk_data_dir = Path(sys.exec_prefix, "share", "nltk_data")
if not Path.exists(nltk_data_dir):
nltk_data_dir.mkdir(parents=True, exist_ok=True)

A way out would be to use the NLTK internal variable and check for all paths:

import nltk
print(nltk.data.path)

This is a list of paths (strings).

We could add a path to it:

nltk.data.path.append("/home/me/nltk_data/")

and the download of the benepar models, for example, should go into the one that the user has read/write permissions on.

Right now, the error with download_models=True gives you the following:

PermissionError: [Errno 13] Permission denied: '/usr/share/nltk_data'

on common Linux platforms.