cache.py 文件源码

def __init__(self, size_limit=100, weak_type='value'):
        """
        Parameters
        ----------
        size_limit : int
            integer that defines the size of the LRU cache. Default is 100.
        """

        super(WeakLRUCache, self).__init__()
        self._size_limit = size_limit
        self.weak_type = weak_type

        if weak_type == 'value':
            self._weak_cache = weakref.WeakValueDictionary()
        elif weak_type == 'key':
            self._weak_cache = weakref.WeakKeyDictionary()
        else:
            raise ValueError("weak_type must be either 'key' or 'value'")

        self._cache = OrderedDict()