SO#2953421

#!/usr/bin/env python

# http://stackoverflow.com/questions/2953421/split-based-by-a-z-character-in-an-alphanumeric-string-in-python/2953461#2953461

import re

s = "5d4h2s"
p = re.compile("([0-9])([a-z])")

def mm(s):
    return zip(s[::2], s[1::2])

def myyn(s):
    return [ m for m in p.findall(s) ]
 

if __name__ == '__main__':
    
    from timeit import Timer
    t_mm = Timer("mm(s)", "from __main__ import mm, s")
    t_myyn = Timer("myyn(s)", "from __main__ import myyn, s, p")
    
    print t_mm.timeit(number=100000)
    print t_myyn.timeit(number=100000)

# 100000, python 2.6, OS X
# ........................
# mm	0.450574874878
# myy	0.3843729496

SO2953421

#!/usr/bin/env python

# http://stackoverflow.com/questions/2953421
# split-based-by-a-z-character-in-an-alphanumeric-string-in-python

import re

s = "5d4h2s"
p = re.compile("([0-9])([a-z])")

def mm(s):
    return zip(s[::2], s[1::2])

def myyn(s):
    return [ m for m in p.findall(s) ]
 

if __name__ == '__main__':
    
    from timeit import Timer
    t_mm = Timer("mm(s)", "from __main__ import mm, s")
    t_myyn = Timer("myyn(s)", "from __main__ import myyn, s, p")
    
    print t_mm.timeit(number=100000)
    print t_myyn.timeit(number=100000)

# 100000, python 2.6, OS X
# ........................
# mm	0.450574874878
# myy	0.3843729496