add a cmd to find error in _training_successful

[frcaud]

Add a cmd to find error during check if training has been successful on the EC2 instance -> if error found then it returns false

[pep8speaks]

Hello @frcaud! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

There are currently no PEP 8 issues detected in this Pull Request. Cheers! 🍻

Comment last updated at 2024-03-01 10:23:52 UTC

[rth]

Thanks @frcaud . LGTM, but let's merge #592 first and sync here to fix CI.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.48%. Comparing base (a924439) to head (b4d696a).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #591   +/-   ##
=======================================
  Coverage   93.48%   93.48%           
=======================================
  Files         103      103           
  Lines        8991     8991           
=======================================
  Hits         8405     8405           
  Misses        586      586           

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