AddressExclude method is incorrectly raising errors about ipaddr-py HOT 5 CLOSED

What do others think?  I could go either way on the first point, that excluding 
a
block completely outside the netblock would just return the same netblock 
instead of
raising a ValueError.

On the second point, that comparison between IPv4 and IPv6 should not raise an 
error,
I disagree.

unfortunately, python gives us two different models.

Arrays:
>>> ['a','b'].remove('c')
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
ValueError: list.remove(x): x not in list

and strings:
>>> 'ab'.strip('c')
'ab'

I guess the question is, what are ip addresses more like, Arrays or strings?  I 
tend to think they're more like 
Arrays (which is why I originally had it raise the exception)

are there any other thoughts on this?

Issue 11 has been merged into this issue.

closing this out.