@pytest.fixture
def b():
    b = fsm(alphabet={'a', 'b'}, states={0, 1, 'ob'}, initial=0, finals={1}, map={0: {'a': 'ob', 'b': 1}, 1: {'a': 'ob', 'b': 'ob'}, 'ob': {'a': 'ob', 'b': 'ob'}})
    return b
@pytest.fixture
def b():
    b = fsm(alphabet={'a', 'b'}, states={0, 1, 'ob'}, initial=0, finals={1}, map={0: {'a': 'ob', 'b': 1}, 1: {'a': 'ob', 'b': 'ob'}, 'ob': {'a': 'ob', 'b': 'ob'}})
    return b