from joblib import Parallel, delayed

def iterate_me(n):
    for i in range(n):
        assert i != n-1
        yield n

def identity(x):
    return x

N_JOBS = 2
GOOD_CASE = N_JOBS * 2
BAD_CASE = GOOD_CASE + 1

try:
    Parallel(n_jobs=N_JOBS)(delayed(identity)(i) for i in iterate_me(BAD_CASE))
    print("BAD - this line should never be reached")
except Exception:
    print("GOOD - this line should always be reached")