3.141592

pi.py

import math
from benchmarker import Benchmarker

loops = 1000 * 1000
with Benchmarker(width=40) as bench:
    
    @bench("static?")
    def _(bm):
        for _ in range(loops):
            3.141592653589793
    
    @bench("pi")
    def _(bm):
        for _ in range(loops):
            math.pi

    @bench("acos(-1)")
    def _(bm):
        for _ in range(loops):
            math.acos(-1)

Result.txt

clombp% python3 pi.py
## benchmarker:         release 4.0.1 (for python)
## python version:      3.4.1
## python compiler:     GCC 4.2.1 Compatible Apple LLVM 5.1 (clang-503.0.40)
## python platform:     Darwin-15.0.0-x86_64-i386-64bit
## python executable:   /usr/local/opt/python3/bin/python3.4
## cpu model:           Intel(R) Core(TM) i5-2435M CPU @ 2.40GHz 
## parameters:          loop=1, cycle=1, extra=0

##                                            real    (total    = user    + sys)
static?                                     0.0830    0.0800    0.0800    0.0000
pi                                          0.2338    0.2400    0.2300    0.0100
acos(-1)                                    0.4723    0.4600    0.4600    0.0000

## Ranking                                    real
static?                                     0.0830  (100.0) ********************
pi                                          0.2338  ( 35.5) *******
acos(-1)                                    0.4723  ( 17.6) ****

## Matrix                                     real    [01]    [02]    [03]
[01] static?                                0.0830   100.0   281.5   568.7
[02] pi                                     0.2338    35.5   100.0   202.0
[03] acos(-1)                               0.4723    17.6    49.5   100.0