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47 lines
936 B
Python
47 lines
936 B
Python
import abc
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import typing as t
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Input = t.TypeVar("Input")
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Category = t.TypeVar("Category")
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class BaseSA(metaclass=abc.ABCMeta):
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"""
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Abstract base class for sentiment analyzers implemented in this project.
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"""
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@abc.abstractmethod
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def train(self, training_set: t.Iterable[tuple[Input, Category]]) -> None:
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"""
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Train the analyzer with the given training set.
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"""
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raise NotImplementedError()
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@abc.abstractmethod
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def use(self, text: Input) -> Category:
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"""
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Use the sentiment analyzer.
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"""
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raise NotImplementedError()
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class AlreadyTrainedError(Exception):
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"""
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This model has already been trained and cannot be trained again.
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"""
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class NotTrainedError(Exception):
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"""
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This model has not been trained yet.
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"""
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__all__ = (
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"Input",
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"Category",
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"BaseSA",
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"AlreadyTrainedError",
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"NotTrainedError",
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)
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