attrs/changelog.d/536.change.rst

``attr.validators.is_callable()`` validator now raises an exception ``attr.exceptions.NotCallableError``, a subclass of ``TypeError``, informing the received value.
`#536 <https://github.com/python-attrs/attrs/pull/536>`_.
Improve the error message informing the value that it got it (#536) * Improve error message of iscallable validator * Add stubs for NotCallableError * Add changelog for iscallable validator 2019-07-20 09:55:26 +00:00			``attr.validators.is_callable()`` validator now raises an exception ``attr.exceptions.NotCallableError``, a subclass of ``TypeError``, informing the received value.
			`#536 <https://github.com/python-attrs/attrs/pull/536>`_.