spaCy/spacy/lang/fr/lemmatizer/__init__.py
mauryaland 36514b5762 Rule-based French Lemmatizer (#2818)
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## Description
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Add a rule-based French Lemmatizer following the english one and the excellent PR for [greek language optimizations](https://github.com/explosion/spaCy/pull/2558) to adapt the Lemmatizer class.

### Types of change
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or new feature, or a change to the documentation? -->

- Lemma dictionary used can be found [here](http://infolingu.univ-mlv.fr/DonneesLinguistiques/Dictionnaires/telechargement.html), I used the XML version.
- Add several files containing exhaustive list of words for each part of speech 
- Add some lemma rules
- Add POS that are not checked in the standard Lemmatizer, i.e PRON, DET, ADV and AUX
- Modify the Lemmatizer class to check in lookup table as a last resort if POS not mentionned
- Modify the lemmatize function to check in lookup table as a last resort
- Init files are updated so the model can support all the functionalities mentioned above
- Add words to tokenizer_exceptions_list.py in respect to regex used in tokenizer_exceptions.py

## Checklist
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- [X] I have submitted the spaCy Contributor Agreement.
- [X] I ran the tests, and all new and existing tests passed.
- [X] My changes don't require a change to the documentation, or if they do, I've added all required information.
2018-10-13 16:38:21 +02:00

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Python

# coding: utf8
from __future__ import unicode_literals
from .lookup import LOOKUP
from ._adjectives import ADJECTIVES
from ._adjectives_irreg import ADJECTIVES_IRREG
from ._adverbs import ADVERBS
from ._nouns import NOUNS
from ._nouns_irreg import NOUNS_IRREG
from ._verbs import VERBS
from ._verbs_irreg import VERBS_IRREG
from ._dets_irreg import DETS_IRREG
from ._pronouns_irreg import PRONOUNS_IRREG
from ._auxiliary_verbs_irreg import AUXILIARY_VERBS_IRREG
from ._lemma_rules import ADJECTIVE_RULES, NOUN_RULES, VERB_RULES
LEMMA_INDEX = {'adj': ADJECTIVES, 'adv': ADVERBS, 'noun': NOUNS, 'verb': VERBS}
LEMMA_EXC = {'adj': ADJECTIVES_IRREG, 'noun': NOUNS_IRREG, 'verb': VERBS_IRREG,
'det': DETS_IRREG, 'pron': PRONOUNS_IRREG, 'aux': AUXILIARY_VERBS_IRREG}
LEMMA_RULES = {'adj': ADJECTIVE_RULES, 'noun': NOUN_RULES, 'verb': VERB_RULES}