I created a virtual environment called "fastai" by conda. I tried to install ipywidgets in it by mamba install ipywidgets Then I checked it and it did exist. But when I used jupyter --version I found the status of ipywidgets was "Not installed". I guessed it might be the problem of jupyter kernel, and I registered a kernel for my virtual environment fastai: python -m ipykernel install --user --name fastai --display-name "Python (fastai)" I checked the new kernel by jupyter kernelspec list and it did succeed. Then I opened a notebook by jupyter notebook and shifted the kernel to the one I created with my virtual env fastai. But I stilled failed to import ipywidgets in the notebook. What's more, jupyter --version also kept that ipywidgets could not be found. I checked my widgetsnbextension, but found both the base env and the virtual env had already had it. That's what I got in my Powershell. I wonder what's going on, and how I can use ipywidgets in my virtual env successfully. Continue reading...
