The English parser can be invoked from the command-line. The pattern module should be installed (i.e., located in /site-packages, see installation instructions) or the current working directory should be the one that contains the pattern folder.

> python -m pattern.en -f file.txt

If no options are given a full parse is executed (i.e. tokenization, tagging, chunking, relations and lemmata). Otherwise, you need to explicitly list every required option:

Short options can be concatenated. Also note the xml option which produces XML output:

> python -m pattern.en xml -OT -s 'The black cat sat on the mat.'

The parsers for other languages work in the same way. Note the xml option (produces XML output).

> python -m pattern.es -s 'El gato negro se sienta en la estera.'
> python -m pattern.de -s 'Die schwarze Katze liegt auf der Matte.'
> python -m pattern.fr -s "Le chat noir s'était assis sur le tapis."
> python -m pattern.it -s 'Il gatto nero faceva le fusa.'
> python -m pattern.nl -s 'De zwarte kat zat op de mat.'