Clean-up lru_cache examples. The print() not is needed. Set maxsize to a power of two.

This commit is contained in:
Raymond Hettinger 2013-04-06 20:27:33 -07:00
parent 0ef392cde7
commit 17328e4fae

View file

@ -79,7 +79,7 @@ The :mod:`functools` module defines the following functions:
Example of an LRU cache for static web content::
@lru_cache(maxsize=20)
@lru_cache(maxsize=32)
def get_pep(num):
'Retrieve text of a Python Enhancement Proposal'
resource = 'http://www.python.org/dev/peps/pep-%04d/' % num
@ -93,8 +93,8 @@ The :mod:`functools` module defines the following functions:
... pep = get_pep(n)
... print(n, len(pep))
>>> print(get_pep.cache_info())
CacheInfo(hits=3, misses=8, maxsize=20, currsize=8)
>>> get_pep.cache_info()
CacheInfo(hits=3, misses=8, maxsize=32, currsize=8)
Example of efficiently computing
`Fibonacci numbers <http://en.wikipedia.org/wiki/Fibonacci_number>`_
@ -108,10 +108,10 @@ The :mod:`functools` module defines the following functions:
return n
return fib(n-1) + fib(n-2)
>>> print([fib(n) for n in range(16)])
>>> [fib(n) for n in range(16)]
[0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610]
>>> print(fib.cache_info())
>>> fib.cache_info()
CacheInfo(hits=28, misses=16, maxsize=None, currsize=16)
.. versionadded:: 3.2