@coeff_func
def constant_(t, alpha=1, beta=1):
    return beta
make sure two dicts have the same keys, delete the ones that are different
dataset/ETHPy150Open CamDavidsonPilon/lifelines/lifelines/generate_datasets.py/constant_--crossover with--dataset/ETHPy150Open qe-team/marmot/marmot/experiment/experiment_utils.py/sync_keys