def assert_not_equal(lval, rval, message=None):
    """Assert that lval and rval are unequal to each other."""
    if message:
        assert lval != rval, message
    else:
        assert lval != rval, 'assertion failed: %r != %r' % (lval, rval)
dataset/ETHPy150Open Yelp/Testify/testify/assertions.py/assert_not_equal/original