GroupDict
=========

.. currentmodule:: deepfos.lib.utils

.. autoclass:: GroupDict

   :exclude-members:




    传入唯一键名集合group，在新增字典的键名已存在在group中时，raise KeyError

    >>> shared_key_group = Group()
    >>> a = GroupDict(shared_key_group)
    >>> b = GroupDict(shared_key_group)
    >>> a['a'] = 1
    >>> a,b
    ({'a': 1}, {})
    >>> b['a'] = 2
    Traceback (most recent call last):
      ...
    KeyError: 'Key a has been existed in key_group. Cannot be added to current dict.'

    >>> a['a'] = 'a'
    >>> a
    {'a': 'a'}

    See Also:
        :class:`get_groupdicts`

    

.. autosummary::