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# 토크나이저를 위한 유틸리티 [[utilities-for-tokenizers]]

이 페이지는 토크나이저에서 사용되는 모든 유틸리티 함수들을 나열하며, 주로 [`PreTrainedTokenizer`]와 [`PreTrainedTokenizerFast`] 사이의 공통 메소드를 구현하는 [`~tokenization_utils_base.PreTrainedTokenizerBase`] 클래스와 [`~tokenization_utils_base.SpecialTokensMixin`]을 다룹니다.

이 함수들 대부분은 라이브러리의 토크나이저 코드를 연구할 때만 유용합니다.

## PreTrainedTokenizerBase [[transformers.PreTrainedTokenizerBase]]

[[autodoc]] tokenization_utils_base.PreTrainedTokenizerBase
   - __call__
   - all

## SpecialTokensMixin [[transformers.SpecialTokensMixin]]

[[autodoc]] tokenization_utils_base.SpecialTokensMixin

## Enums 및 namedtuples [[transformers.tokenization_utils_base.TruncationStrategy]]

[[autodoc]] tokenization_utils_base.TruncationStrategy

[[autodoc]] tokenization_utils_base.CharSpan

[[autodoc]] tokenization_utils_base.TokenSpan