ImportError: cannot import name 'UnencryptedCookieSessionFactoryConfig' from 'pyramid.session' (unknown location)

[yhangchen]

Hi, by executing this

python3 train.py --name cifar10-100_500 --dataset cifar10 --model_type ViT-B_16 --pretrained_dir checkpoint/ViT-B_16.npz

I encounter the error:

Traceback (most recent call last):
  File "train.py", line 17, in <module>
    from apex import amp
  File "/home/tiger/.local/lib/python3.7/site-packages/apaex/__init__.py", line 13, in <module>
    from pyramid.session import UnencryptedCookieSessionFactoryConfig
ImportError: cannot import name 'UnencryptedCookieSessionFactoryConfig' from 'pyramid.session' (unknown location)

[zhoufengfan]

I think you have install the wrong apex.
I have installed apex through the source code. You can refer to the official website and try again.

[airsimonhan]

git clone https://github.com/NVIDIA/apex
cd apex
python setup.py install

[jhq1234]

git clone https://github.com/NVIDIA/apex cd apex python setup.py install

it works for me!
Thanks!

[luomi16]

!git clone https://github.com/NVIDIA/apex
%cd apex
!pip install -v --disable-pip-version-check --no-cache-dir --no-build-isolation ./