env about run longformer model downloaded from https://github.com/allenai/longformer 
1. just use `conda install transformers`，the transformers version is 4.4.2,  can't run
    1.1. error:
           ```bash
          can't import pipline
          
         # then use tokenizer and model to get my feature vector，ERROR：

           RuntimeError: Error(s) in loading state_dict for BartModel:
	size mismatch for model.encoder.embed_positions.weight: copying a param with shape torch.Size([16386, 768]) from 
       checkpoint, the shape in current model is torch.Size([1026, 768]).
          ```
2. change to use `pip install transformers`, the transformers version is 3.3.0,can't run
   2.1. error:
         ```bash
         can't import name tokenizer
        
         # then i found it in issue that use "pip install tokenizer", it has exited, and tokenizer version is 0.8.0rc2. I find another env that can work,the tokenizer version is 0.5.0,so i use pip to change its version from 0.8.0rc2 to 0.5.0.ERROR:
         
         pip's dependency ..... which is incompatibe
         
        # however the version of toikenizer in only one env which can run is 0.5.0 . 
         ```
3. So the only one worked env is:
 ```bash
conda create -n dnabert python=3.6

# pytorch-transformers 
pip install pytorch-transformers

conda install pytorch torchvision cudatoolkit=10.0 -c pytorch

# dnabert
git clone https://github.com/jerryji1993/DNABERT
cd DNABERT
python3 -m pip install --editable .
cd examples
python3 -m pip install -r requirements.txt 

# allenai 
conda install cudatoolkit=10.0
pip install git+https://github.com/allenai/longformer.git

# huggingface
pip install transformers
```
# 我做错了什么才会到这种局面？
I created an env that cannot be copied<|||||>Please do not create duplicates.
Duplicate of #11301 <|||||>sorry, i close it now