FrozenClass
===========

.. currentmodule:: deepfos.lib.utils

.. autoclass:: FrozenClass

   :exclude-members:



不可修改的类

    元类，指定此元类的类将不可以设置属性，
    不可初始化。

    >>> class Frozen(metaclass=FrozenClass):
    ...     pass
    >>> Frozen.x = 1
    Traceback (most recent call last):
    ...
    NotImplementedError: Frozen is read-only.
    >>> Frozen()
    Traceback (most recent call last):
    ...
    NotImplementedError: Frozen cannot be instantiated.

    

.. autosummary::