めざせpythonライブラリマスター （43）cpmoptimize

#【ライブラリ説明】
　素早く指数計算を行う

#【プログラム】

cpmoptimize.py

# -*- coding: utf-8 -*-

from benchit import BenchIt

b = BenchIt()

def fib(n):
    a = 0
    b = 1
    for i in xrange(n):
        a, b = b, a + b
    return a

result = fib(10 ** 6)

b.mark("not use cpmoptimize")

from cpmoptimize import cpmoptimize

@cpmoptimize()
def fib(n):
    a = 0
    b = 1
    for i in xrange(n):
        a, b = b, a + b
    return a

result = fib(10 ** 6)

b.mark("use cpmoptimize")
b.display()

#【結果】

output.text

+---------------------+----------+------+-------+----------+----------+---------+
| Marker              | Method   | Line | Loops | Avg Time |  Runtime | Percent |
+---------------------+----------+------+-------+----------+----------+---------+
| not use cpmoptimize | <module> |   16 |     1 | 28.56600 | 28.56600 |   96.95 |
| use cpmoptimize     | <module> |   30 |     1 |  0.89900 |  0.89900 |    3.05 |
+---------------------+----------+------+-------+----------+----------+---------+
Total runtime: 29.47

#【参考サイト】
　pypi
　github
　めざせpythonライブラリマスター （27）benchit