How to config nltk data directory from code?

Just change items of nltk.data.path, it's a simple list.

From the code, http://www.nltk.org/_modules/nltk/data.html:

``nltk:path``: Specifies the file stored in the NLTK data package at *path*.  NLTK will search for these files in the directories specified by ``nltk.data.path``.

Then within the code:

####################################################################### Search Path######################################################################path = []"""A list of directories where the NLTK data package might reside.   These directories will be checked in order when looking for a   resource in the data package.  Note that this allows users to   substitute in their own versions of resources, if they have them   (e.g., in their home directory under ~/nltk_data)."""# User-specified locations:path += [d for d in os.environ.get('NLTK_DATA', str('')).split(os.pathsep) if d]if os.path.expanduser('~/') != '~/':    path.append(os.path.expanduser(str('~/nltk_data')))if sys.platform.startswith('win'):    # Common locations on Windows:    path += [        str(r'C:\nltk_data'), str(r'D:\nltk_data'), str(r'E:\nltk_data'),        os.path.join(sys.prefix, str('nltk_data')),        os.path.join(sys.prefix, str('lib'), str('nltk_data')),        os.path.join(os.environ.get(str('APPDATA'), str('C:\\')), str('nltk_data'))    ]else:    # Common locations on UNIX & OS X:    path += [        str('/usr/share/nltk_data'),        str('/usr/local/share/nltk_data'),        str('/usr/lib/nltk_data'),        str('/usr/local/lib/nltk_data')    ]

To modify the path, simply append to the list of possible paths:

import nltknltk.data.path.append("/home/yourusername/whateverpath/")

Or in windows:

import nltknltk.data.path.append("C:\somewhere\farfar\away\path")

I use append, example

nltk.data.path.append('/libs/nltk_data/')