Test the exception conditions (#1853)

* Text exception conditions

These are ValueErrors, not AttributeErrors.

* fixup! Format Python code with psf/black push

* Update perceptron.py

* Update perceptron.py

* Update perceptron.py

* Revert the test

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

Christian Clauss committed 6y ago

7ebe2b9593725dd1ca431bab98e7f4307d976768

Parent: 3735e74

Committed by GitHub <noreply@github.com> on 4/13/2020, 12:10:21 AM