Lightweight profiling tool to detect performance BottleNecks in Python code.
Hence the name: bn - BottleNeck.
And you know keys B and N are very comfortable to type quickly in a row.
Usage:
bn('loop')
for item in generator:
bn('rabbit')
# code of rabbit
bn('turtle')
# code of turtle
bn('loop')
if bn.total > 1.0:
logging.info(bn)
Result:
TOTAL=22.2632, turtle=20.6403, rabbit=1.6209, loop=0.0020
#
# This config is default in bn>=0.1.5:
# Bn(total_key='TOTAL', format='{key}={seconds:.4f}', sep=', ')
# OR:
22.2632 TOTAL
20.6403 turtle
1.6209 rabbit
0.0020 loop
#
# This config is default in bn<=0.1.4:
# Bn(total_key='TOTAL', format='{seconds:>10.4f} {key}', sep='\n')
Install:
pip install bn
Scope:
# Global "bn" is useful to profile cross-module without passing "bn" explicitly.
from bn import bn
bn.format = custom_format
# Scoped "Bn" is useful to have multiple independent profilers.
from bn import Bn
def action():
bn = Bn(format=custom_format)
bn version 0.1.5
Copyright (C) 2013 by Denis Ryzhkov denisr@denisr.com
MIT License, see http://opensource.org/licenses/MIT
