如何保存 scipy.stats 分布?
例如:
a = [scipy.stats.norm(0,1), scipy.stats.norm(0,2)]
with open("distro.pickle", 'w') as f:
pickle.dump(a, f)
这样做我得到一个TypeError: can't pickle instancemethod objects
他们不支持酸洗。“解决”问题的更简单方法是腌制参数,并在取消腌制时创建一个新对象:
>>> from collections import namedtuple
>>> Norm = namedtuple('Norm', 'mu variance')
>>> def pickle_norm(n):
... return pickle.dumps(Norm(*n.args))
...
>>> def unpickle_norm(s):
... return scipy.stats.norm(*pickle.loads(s))
...
>>> s = pickle_norm(scipy.stats.norm(5, 10))
>>> d = unpickle_norm(s)