36 lines
885 B
Python
36 lines
885 B
Python
from typing import List, Any
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from transformers import AutoTokenizer
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from ..tokenizer_interface import TokenizerInterface
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class HuggingFaceTokenizer(TokenizerInterface):
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def __init__(
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self,
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model: str,
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max_tokens: int = 512,
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):
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self.model = model
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self.max_tokens = max_tokens
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self.tokenizer = AutoTokenizer.from_pretrained(model)
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def extract_tokens(self, text: str) -> List[Any]:
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tokens = self.tokenizer.tokenize(text)
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return tokens
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def count_tokens(self, text: str) -> int:
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"""
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Returns the number of tokens in the given text.
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Args:
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text: str
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Returns:
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number of tokens in the given text
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"""
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return len(self.tokenizer.tokenize(text))
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def trim_text_to_max_tokens(self, text: str) -> str:
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raise NotImplementedError
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