__init__.py 文件源码

def __setitem__(self, args, value):
        '''
        set values via multi-indexing

        If ``d.indices`` is empty (i.e., no index names and no items are set), index names
        can be created when setting a new item with specified names (``index1`` and ``index2``
        can not be int or slice)::

            d = MIDict()
            d['uid':1, 'name'] = 'jack'
            # d -> MIDict([[1, 'jack']], ['uid', 'name'])

            d = MIDict()
            d[1] = 'jack' # using default index names
            <==> d[:'jack'] = 1
            # d -> MIDict([(1, 'jack')], ['index_1', 'index_2'])

        If ``d.indices`` is not empty, when setting a new item, all indices of the item
        must be specified via ``index1`` and ``index2`` (implicitly or explicitly)::

            d = MIDict([['jack', 1, '192.1']], ['name', 'uid', 'ip'])
            d['tony'] = [2, '192.2']
            <==> d['name':'tony',['uid', 'ip']] = [2, '192.2']
            # the following will not work:
            d['alice', ['uid']] = [3] # raise ValueError

        More examles::

            d = MIDict(jack=1, tony=2)

            d['jack'] = 10 # replace value of key 'jack'
            d['tom'] = 3 # add new key/value
            d['jack'] = 2 # raise ValueExistsError
            d['alice'] = 2 # raise ValueExistsError
            d[:2] = 'jack' # raise ValueExistsError
            d['jack', :] = ['tony', 22] # raise ValueExistsError
            d['jack', :] = ['jack2', 11] # replace item of key 'jack'

        '''
        return _MI_setitem(self, args, value)