Error encountered when: Trying to import aihwkit inside Jupyter Notebook about aihwkit HOT 3 CLOSED

@diego-plan9 Do you know what's going on?

from aihwkit.

It seems to boil down to making jupyter aware of where the package lives - there are a couple of scenarios:

1. if using a "developer install", the process concludes with python setup.py build_ext --inplace and the package is not installed from pip's perspective. We recommend this approach when intending to make changes to the source code, as it avoids having to reinstall every time a change in the source code is made - the drawback is that it involves manual handling of PYTHONPATH.
2. if using an "advanced install", the process concludes with the package being installed from pip's perspective. This makes it discoverable by pip and the rest of the tools (including jupyter) in the same way as any other package, but makes it more tedious to try new changes in the source code.

I'm inferring your case is more similar to 1 - if that is the case, it might be just a matter of how jupyter is invoked. Assuming (and from your replies on #65 seems like a safe assumption!) you managed to compile and are able to execute the examples, can you try from the root folder of the cloned repo (and inside an activated virtualenv/conda env):

$ PYTHONPATH=/src jupyter notebook

That would be akin to "starting jupyter, instructing the Python interpreter used to invoke jupyter to look into src/ when importing modules". If that is successful (and if you find that pre-pending that string to all your usual commands gets cumbersome), you can make the modification to PYTHONPATH a bit more permanent by doing:

$ export PYTHONPATH=/path/to/your/cloned_repo/src/

This would set the environment variable for all the commands you issue in that terminal.

If that does not work or you are unable to control how jupyter is launched, there are some workarounds tackling the issue from a different angle - ie. inside Juypter. Within your notebook, you can add a cell at the top with a content similar to:

import sys
sys.path.append("/path/to/your/cloned_repo/src/")

Which can be made more generic by tweaking your jupyter config. However, this workaround tends not to be too portable and I'd recommend trying to solve it via correctly setting the python path - let's see if the first approach yields good results in your environment!

from aihwkit.

Closing as the issue has been inactive for a while: please reopen if needed.

from aihwkit.