Is it possible to write feature selection logs to file?

[AlexGrunt]

Hello!

I want to know if is it possible to send SequentialFeatureSelector.fit() method logs to specified logfile.

I'm using this method in Jupyter notebook and I can not longer see the output of this method after Reconnect to Jupyter Kernel. Moreover if I trying to interrupt current run and call SequentialFeatureSelector.finalize_fit(), SequentialFeatureSelector.get_metric_dict() method isn't accessible for it's object and I can't get feature selection history for this run.

Is there any workaround for described usecase?

Any help is greatly appreciated!

[arilwan]

HI @AlexGrunt,

Yes, I have done this and it works fine. Here's how:

1. create a file handler object (e.g. f = open(...) just before the try...except block around here.
2. Replace the sys.stderr.write (or add) with f.write(...) around line. Other option could be to redirect the stderr out in your terminal to a file.
   In the first case, do not forget to write to the file every time there update (don't wait until the is completed), e.g.

f.write(f'\n{k_idx} \t{cv_scores} \t{k_score}')
f.flush()
os.fsync(f.fileno()) # last 2 lines to ensure history is written to the file

Hope this helps.

[AlexGrunt]

Thank you