Benchmark re.sub() or str.replace()

replace.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import re
from benchmarker import Benchmarker, cmdopt

def replace_reserved_chars(value):
    """
    Replace reserved chars to '-'.

    :param value: Replace string
    """
    ret = value.replace(';', '-') \
               .replace('/', '-') \
               .replace('?', '-') \
               .replace(':', '-') \
               .replace('@', '-') \
               .replace('&', '-') \
               .replace('=', '-') \
               .replace('+', '-') \
               .replace(',', '-') \
               .replace('(', '-') \
               .replace(')', '-') \
               .replace('[', '-') \
               .replace(']', '-') \
               .replace('!', '-') \
               .replace('"', '-') \
               .replace('#', '-') \
               .replace('%', '-') \
               .replace("'", '-') \
               .replace('~', '-') \
               .replace('\\', '-') \
               .replace('`', '-') \
               .replace(' ', '-')

    return ret

def replace_reserved_chars_regex(value):
    pattern = r'[\s+]|;|/|\?|:|@|&|=|\+|,|\(|\)|\[|\]|!|"|#|%|\'|~|\\|`'
    ret = re.sub(pattern, '-', value)
    return ret

def replace_reserved_chars_regex_compile(value):
    pattern = r'[\s+]|;|/|\?|:|@|&|=|\+|,|\(|\)|\[|\]|!|"|#|%|\'|~|\\|`'
    r = re.compile(pattern)
    ret = r.sub('-', value)
    return ret

cmdopt.parse()

with Benchmarker(width=20, loop=100*1000) as bm:
    for _ in bm.empty():
        pass
    for _ in bm('replace one'):
        replace_reserved_chars('Hello world')
    for _ in bm('re one'):
        replace_reserved_chars_regex('Hello world')
    for _ in bm('re compile one'):
        replace_reserved_chars_regex_compile('Hello world')

with Benchmarker(width=20, loop=100*1000) as bm:
    for _ in bm.empty():
        pass
    for _ in bm('replace'):
        replace_reserved_chars(u'エメラルド Tour 2010(初回限定盤) [DVD]')
    for _ in bm('re'):
        replace_reserved_chars_regex(u'エメラルド Tour 2010(初回限定盤) [DVD]')    for _ in bm('re compile'):
        replace_reserved_chars_regex_compile(u'エメラルド Tour 2010(初回限定盤) 
[DVD]')
with Benchmarker(width=20, loop=100*1000) as bm:
    for _ in bm.empty():
        pass
    for _ in bm('replace all'):
        replace_reserved_chars(' ;/?:@&+,()[]!"#%\'~\\`')
    for _ in bm('re all'):
        replace_reserved_chars_regex(' ;/?:@&+,()[]!"#%\'~\\`')
    for _ in bm('re compile all'):
        replace_reserved_chars_regex_compile(' ;/?:@&+,()[]!"#%\'~\\`')

with Benchmarker(width=20, loop=100*1000) as bm:
    for _ in bm.empty():
        pass
    for _ in bm('replace none'):
        replace_reserved_chars(u'エメラルド-Tour-2010-初回限定盤-DVD')
    for _ in bm('re none'):
        replace_reserved_chars_regex(u'エメラルド-Tour-2010-初回限定盤-DVD')
    for _ in bm('re compile none'):
        replace_reserved_chars_regex_compile(u'エメラルド-Tour-2010-初回限定盤-DVD')