A LRUDict is basically a simple dictionary, which has a defined
maximum capacity, that may be supplied at construction time, or
modified at run-time via the capacity property:
>>> cache = LRUDict(1)
>>> cache.capacity
1

WWW: https://pypi.python.org/pypi/darts.util.lru

PR:		211047
Submitted by:	Danilo G. Baio <dbaio@bsd.com.br>