Python使用lru对dict和list进行缓存：pyLruCache。

pyLruCache.py

for Dict

from pyLruCache import *  In [1]: from pyLruCache import *    In [2]: a = pyLruListCache(3)    In [3]: for i in a.iteritems():     ...:     print i     ...:    In [4]:    In [4]: a[1] = 1    In [5]: a[2] = 2    In [6]: a[3] = 3    In [7]: for i in a.iteritems():     ...:     print i     ...:  (1, 1)  (2, 2)  (3, 3)    In [8]: a[4] = 4    In [9]: for i in a.iteritems():      print i     ...:  (2, 2)  (3, 3)  (4, 4)    In [10]: print a[2]  2    In [11]: a[5] = 5    In [12]: for i in a.iteritems():      print i     ....:  (4, 4)  (2, 2)  (5, 5)    In [13]: a[6] = []    In [14]: a[6].append(1)    In [15]: a[6].append(2)    In [16]: a[6].append(3)    In [17]: for i in a.iteritems():      print i     ....:  (2, 2)  (5, 5)  (6, [1, 2, 3])    In [18]: a[7]=7    In [19]: for i in a.iteritems():      print i     ....:  (5, 5)  (6, [1, 2, 3])  (7, 7)

for List

rom pyLruCache import pyLruListCache    a = pyLruListCache(5)    for i in range(100):      a.appendd(i)

the result in debug mode

{96: 96, 92: 92, 93: 93, 94: 94, 95: 95} 92

{96: 96, 97: 97, 93: 93, 94: 94, 95: 95} 93

{96: 96, 97: 97, 98: 98, 94: 94, 95: 95}

安装

pyLruCache can be installed using Pypi, pip install pyLruCache