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cachetools 2.0.0

Extensible memoizing collections and decorators

Package Documentation

This module provides various memoizing collections and decorators, including variants of the Python 3 Standard Library @lru_cache function decorator.

>>> from cachetools import LRUCache
>>> cache = LRUCache(maxsize=2)
>>> cache.update([('first', 1), ('second', 2)])
>>> cache
LRUCache([('second', 2), ('first', 1)], maxsize=2, currsize=2)
>>> cache['third'] = 3
>>> cache
LRUCache([('second', 2), ('third', 3)], maxsize=2, currsize=2)
>>> cache['second']
>>> cache['fourth'] = 4
>>> cache
LRUCache([('second', 2), ('fourth', 4)], maxsize=2, currsize=2)

For the purpose of this module, a cache is a mutable mapping of a fixed maximum size. When the cache is full, i.e. by adding another item the cache would exceed its maximum size, the cache must choose which item(s) to discard based on a suitable cache algorithm. In general, a cache’s size is the total size of its items, and an item’s size is a property or function of its value, e.g. the result of sys.getsizeof(value). For the trivial but common case that each item counts as 1, a cache’s size is equal to the number of its items, or len(cache).

Multiple cache classes based on different caching algorithms are implemented, and decorators for easily memoizing function and method calls are provided, too.


Install cachetools using pip:

pip install cachetools


Copyright (c) 2014-2016 Thomas Kemmer.

Licensed under the MIT License.

File Type Py Version Uploaded on Size
cachetools-2.0.0-py2.py3-none-any.whl (md5) Python Wheel py2.py3 2016-10-03 11KB
cachetools-2.0.0.tar.gz (md5) Source 2016-10-03 18KB