LazyDict
========

.. currentmodule:: deepfos.lib.utils

.. autoclass:: LazyDict

   :exclude-members:



元素延迟初始化的字典

    元素的值只会在使用时被计算

    >>> def call(*args):
    ...     print('calc')
    ...     return sum(args)
    >>> ld = LazyDict()
    >>> ld['a'] = (call, 1, 2, 3)
    >>> ld['b'] = (call, 4, 5, 6)
    >>> ld['a']
    calc
    6
    >>> ld['a']
    6

    See Also:
        :class:`LazyList`

    

.. autosummary::