Function create_seed_generator

nevergrad/benchmark/xpbase.py:112–128

Create a stream of seeds, independent from the standard random stream. This is designed to be used in experiment plans generators, fore reproducibility. Parameter --------- seed: int or None the initial seed Yields ------ int or None potential new seeds,

(seed: tp.Optional[int])

def create_seed_generator(seed: tp.Optional[int]) -> tp.Iterator[tp.Optional[int]]:
    """Create a stream of seeds, independent from the standard random stream.
    This is designed to be used in experiment plans generators, fore reproducibility.

    Parameter
    ---------
    seed: int or None
        the initial seed

    Yields
    ------
    int or None
        potential new seeds, or None if the initial seed was None
    """
    generator = None if seed is None else np.random.RandomState(seed=seed)
    while True:
        yield None if generator is None else generator.randint(2**32, dtype=np.uint32)  # type: ignore


class Experiment: