ImportError: DLL load failed while importing win32file

[csnam]

i had proceed according to the install instruction
When I ran the demonstration, I got the following error.

importError: DLL load failed while importing win32file

I'd appreciate it if someone would help me

command list

conda install pytorch torchvision -c pytorch
conda install opencv
pip install git+https://github.com/facebookresearch/fvcore
pip install cython;
pip install git+https://github.com/philferriere/cocoapi.git#subdirectory=PythonAPI
#two file modify argument_spec.h , cast.h
"C:\Program Files (x86)\Microsoft Visual Studio\2019\community\VC\Auxiliary\Build\vcvars64.bat"
cd detectron2
python setup.py build develop

there was no error until the command above

execute demo

python demo/demo.py --config-file configs/COCO-InstanceSegmentation/mask_rcnn_R_50_FPN_3x.yaml --input input1.jpg --opts MODEL.WEIGHTS detectron2://COCO-InstanceSegmentation/mask_rcnn_R_50_FPN_3x/137849600/model_final_f10217.pkl`

...
...
File "C:\Users\CSNAM\Anaconda3\envs\detectron_env\lib\site-packages\portalocker_init_.py", line 4, in
from . import portalocker
File "C:\Users\CSNAM\Anaconda3\envs\detectron_env\lib\site-packages\portalocker\portalocker.py", line 9, in
import win32file
ImportError: DLL load failed while importing win32file

Did i miss something ?

[jefflomax]

I also had to set num_devices to 1 in evaluator.py (there may be a more elegant way to disable torch.distributed). My environment is a little different as I'm building against CUDA 10.0 instead of 10.1. pip list on my environment shows portalocker 1.5.2

And your test ran fine for me:

python demo/demo.py --config-file configs/COCO-InstanceSegmentation/mask_rcnn_R_50_FPN_3x.yaml --input "C:\programs\pytorch\detectron2\datasets\coco\val2017\000000000139.jpg" --opts MODEL.WEIGHTS detectron2://COCO-InstanceSegmentation/mask_rcnn_R_50_FPN_3x/137849600/model_final_f10217.pkl
[02/10 16:16:28 detectron2]: Arguments: Namespace(confidence_threshold=0.5, config_file='configs/COCO-InstanceSegmentation/mask_rcnn_R_50_FPN_3x.yaml', input=['C:\\programs\\pytorch\\detectron2\\datasets\\coco\\val2017\\000000000139.jpg'], opts=['MODEL.WEIGHTS', 'detectron2://COCO-InstanceSegmentation/mask_rcnn_R_50_FPN_3x/137849600/model_final_f10217.pkl'], output=None, video_input=None, webcam=False)
WARNING [02/10 16:16:28 d2.config.compat]: Config 'configs/COCO-InstanceSegmentation/mask_rcnn_R_50_FPN_3x.yaml' has no VERSION. Assuming it to be compatible with latest v2.
model_final_f10217.pkl: 178MB [00:07, 25.4MB/s]
[02/10 16:16:42 detectron2]: C:\programs\pytorch\detectron2\datasets\coco\val2017\000000000139.jpg: detected 21 instances in 2.83s

[jefflomax]

What version of Python? mhammond/pywin32#1431

[csnam]

With your advice, the error was eliminated and it was successfully implemented. Thank you.
i had needed the below command
"conda install pywin32"

[nickums]

my 'conda install pywin32' gives me
CondaHTTPError: HTTP 000 CONNECTION FAILED for url https://repo.anaconda.com/pkgs/main/win-64/current_repodata.json
.....
SSLError(MaxRetryError('HTTPSConnectionPool(host='repo.anaconda.com', port=443): Max retries exceeded with url: /pkgs/main/win-64/current_repodata.json (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available."))'))

[fingoldo]

What helped me was issuing the following commands in the x64 command line:

cd C:\ProgramData\Anaconda3\Scripts
python pywin32_postinstall.py -install