Hi guys, I am new in the development of extensions for inkscape. Basically I need an extension that allow me add svg file from local folder to my canvas, but using an extension in python. Somebody help with this job?. Thanks friends!

File -> Import doesn't work?...

So, you can have a look at the web pages we have made for extensions devs here:
https://inkscape.org/en/develop/extensions/
and also take a look at some of the preexisting extensions to understand how to insert and edit document nodes.

Try to reuse as much code as possible and remember to comply to the licence if you copy any code.

I asked a similar questions here viewtopic.php?f=5&t=27324. At the time, it seems like it is not possible to link to an svg or pdf file, only to bitmap files. I think this would be a cool feature addition and very helpful when creating panels within a figure, which is a common when communicating scientific findings. As inkscape has previously received some press as a great tool for creating scientific posters, facilitating figure panel creation could lead to wide adoption among a scientific audience.