# Bert Tokenizer Parameter Possible Values

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**Category:** 🤗Transformers\
**Created:** [October 8, 2021, 8:58am UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fbert-tokenizer-parameter-possible-values%2F10613 "2021-10-08T08:58:18Z")\
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**Author:** ![demoacct](https://avatars.discourse-cdn.com/v4/letter/d/bbce88/32.png) [@demoacct](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Fdemoacct)%5C
**Post date:** [October 8, 2021, 8:58am UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Fbert-tokenizer-parameter-possible-values%2F10613%2F1 "2021-10-08T08:58:18Z")

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Hi,

from transformers import BertTokenizer

tokenizer = BertTokenizer(‘bert-baser-uncased’)

#1 tokens = tokenizer(texts, padding=True, truncation=True)  
#2 tokens = tokenizer(texts, padding=“max\_length”, …)

I was trying to find out what are the possible values for “padding” i.e. True, “max\_length” …? I can’t seem to find it. I was expected to find it here

> **[BERT](https://huggingface.co/docs/transformers/model_doc/bert?highlight=berttokenizer)**
>
> We’re on a journey to advance and democratize artificial intelligence through open source and open science.

But no relevant documentation.

Please direct me to the documentation.

Thanks