.. _fwflag_language:
=============
--language
=============
Switch
======

--language {en,zh}

Description
===========

Language of the corpus, used to select the right tokenizer/parser. Aliased as ``--lang``.

Argument and Default Value
==========================

One of ``en`` or ``zh`` (argparse ``choices``). Default: ``en`` (``dlac.DEF_LANG``).

Details
=======

Any other value is rejected by argparse itself before DLATK even runs (``error: argument --language/--lang: invalid choice``). Affects tokenization in :doc:`fwflag_add_tokenized`/:doc:`fwflag_add_ngrams` and any other message-processing step that depends on language-specific rules.

Other Switches
==============

Optional Switches:

* :doc:`fwflag_no_lang` (unrelated — excludes language features from a prediction run, not a language selector)

Example Commands
================

.. code-block:: bash

	dlatkInterface.py -d chinese_corpus -t msgs -c user_id --language zh --add_tokenized