initialize multiply times when enable ANYWIDGET_HMR

[Roy-Kid]

Hi, I found a strange behavior when I am developing.
I am using

%load_ext autoreload
%autoreload 2
%env ANYWIDGET_HMR=1
import molvis

and vite dev and _DEV-style for developing, and when I re-initialize the widget class, both python class and backend will initialize multiply time. For example, the first time I open vscode and initialize it, the class will initialize once, and re-initialize it, it will initialize twice, and so on. Even after I restart the kernel

Here is the log:

after a cell run, the class initialize multiply times(it's very regular, the n-th run will cause n times initialization).

Any good idea to fix it? or maybe I can not use autoreload with ANYWIDGET_HMR?

[Roy-Kid]

also, even though I call a method of widget, let's say "molvis.add_atom()", the widget also will be re-initialized

[manzt]

Hi there, sorry for the delay. I think this could be due to mixing anywidget's HMR with Vite. If you are using Vite, I would not set the ANYWIDGET_HMR=1 since vite will take care of hot-reloading your JS modules. I'm thinking that what is happening right now is that both anywidget and vite are trying to refresh at the same time.

[Roy-Kid]

Thanks! I think I mixed this refresh problem with another one: when I re-execute the cell, the render function will also be called. I re-wrote the code and this double refresh issue is obvious. I already fixed it! Again, thanks a lot!