docs: def assert_raises(ex_type, func, *args, **kwargs):
      r"""
      Checks that a function raises an error when given specific arguments.
  
      Args:
          ex_type (Exception): exception type
          func (callable): live python function
  
      CommandLine:
          python -m utool.util_assert assert_raises --show
  
      Example:
          >>> # ENABLE_DOCTEST
          >>> from utool.util_assert import *  # NOQA
          >>> import utool as ut
          >>> ex_type = AssertionError
          >>> func = len
          >>> # Check that this raises an error when something else does not
          >>> assert_raises(ex_type, assert_raises, ex_type, func, [])
          >>> # Check this does not raise an error when something else does
          >>> assert_raises(ValueError, [].index, 0)
      """
      try:
          func(*args, **kwargs)
      except Exception as ex:
          assert isinstance(ex, ex_type), (
              'Raised %r but type should have been %r' % (ex, ex_type))
          return True
      else:
          raise AssertionError('No error was raised')