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| # Tokenizers的工具 | |
| 并保留格式：此页面列出了tokenizers使用的所有实用函数，主要是类 | |
| [`~tokenization_utils_base.PreTrained TokenizerBase`] 实现了常用方法之间的 | |
| [`PreTrained Tokenizer`] 和 [`PreTrained TokenizerFast`] 以及混合类 | |
| [`~tokenization_utils_base.SpecialTokens Mixin`]。 | |
| 其中大多数只有在您研究库中tokenizers的代码时才有用。 | |
| ## PreTrainedTokenizerBase | |
| [[autodoc]] tokenization_utils_base.PreTrainedTokenizerBase | |
| - __call__ | |
| - all | |
| ## SpecialTokensMixin | |
| [[autodoc]] tokenization_utils_base.SpecialTokensMixin | |
| ## Enums和namedtuples(命名元组) | |
| [[autodoc]] tokenization_utils_base.TruncationStrategy | |
| [[autodoc]] tokenization_utils_base.CharSpan | |
| [[autodoc]] tokenization_utils_base.TokenSpan | |