Elegant Format for a MAC Address in Python 3.2

Question

I am looking for a more elegant solution to formatting a MAC address with colons. I am using Python 3.2. A fancy list comprehension perhaps?

s=\"\"
h=\"0023         


        

Answer 1

The easiest solution here is just to use str.join()

>>> ":".join(str_grouper(2, "00233a990c21"))
'00:23:3a:99:0c:21'

Here using a modified version of the grouper() recipe from the itertools docs:

def str_grouper(n, iterable):
     args = [iter(iterable)] * n
     for part in zip(*args): #itertools.izip in 2.x for efficiency.
         yield "".join(part)