_random_circuit_generator.py 文件源码

def choices(population, weights=None, k=1):
    """
    Replacement for `random.choices()`, which is only available in Python 3.6+.
    TODO: drop once Python 3.6 is required by the sdk.
    """
    if weights and sum(weights) != 1:
        # Normalize the weights if needed, as numpy.random.choice requires so.
        weights = [float(i)/sum(weights) for i in weights]

    return numpy.random.choice(population, size=k, p=weights)