iop.py 文件源码

def instantiate_dist(name, *opts):
    """
    Creates distribution for the given command-line arguments.
    """
    try:
        dist = getattr(stats, name)
    except AttributeError:
        raise ValueError("No such distribution {}".format(name))
    opts = list(opts)
    try:
        loc = float(opts.pop(0))
    except IndexError:
        loc = 0
    try:
        scale = float(opts.pop(0))
    except IndexError:
        scale = 1
    return dist(*map(float, opts), loc=loc, scale=scale)