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For the Russian and Ukrainian lemmatizers, restrict the `pymorphy2` requirement to the mode `pymorphy2` so that lookup or other lemmatizer modes can be loaded without installing `pymorphy2`.
33 lines
1023 B
Python
33 lines
1023 B
Python
from typing import Optional
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from thinc.api import Model
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from ..ru.lemmatizer import RussianLemmatizer
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from ...vocab import Vocab
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class UkrainianLemmatizer(RussianLemmatizer):
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_morph = None
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def __init__(
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self,
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vocab: Vocab,
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model: Optional[Model],
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name: str = "lemmatizer",
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*,
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mode: str = "pymorphy2",
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overwrite: bool = False,
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) -> None:
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if mode == "pymorphy2":
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try:
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from pymorphy2 import MorphAnalyzer
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except ImportError:
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raise ImportError(
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"The Ukrainian lemmatizer mode 'pymorphy2' requires the "
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"pymorphy2 library and dictionaries. Install them with: "
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"pip install pymorphy2 pymorphy2-dicts-uk"
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) from None
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if UkrainianLemmatizer._morph is None:
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UkrainianLemmatizer._morph = MorphAnalyzer(lang="uk")
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super().__init__(vocab, model, name, mode=mode, overwrite=overwrite)
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