def check_random_state()

in augly/audio/utils.py [0:0]

• 10 lines of code
• 5 McCabe index (conditional complexity)

def check_random_state(seed: Optional[RNGSeed]) -> RNG:
    """
    Turn seed into a np.random.RandomState instance

    @param seed: instance of RandomState:
        If seed is None, return the RandomState singleton used by np.random.
        If seed is an int, return a new RandomState instance seeded with seed.
        If seed is already a RandomState instance, return it.
        Otherwise raise ValueError.
    """
    if seed is None or seed is np.random:
        return np.random.mtrand._rand
    if isinstance(seed, numbers.Integral):
        return np.random.RandomState(seed)
    if isinstance(seed, (np.random.RandomState, np.random.Generator)):
        return seed
    raise ValueError(
        f"{seed} cannot be used to seed a numpy.random.RandomState instance"
    )