Issue 51 in netaddr: __iter__ operator for IPv6 network

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Status: New
Owner: ----
Labels: Type-Defect Priority-Medium

New issue 51 by pgurumur: __iter__ operator for IPv6 network
http://code.google.com/p/netaddr/issues/detail?id=51

Python 2.5.4 (r254:67916, Jul 3 2009, 22:17:21)
[GCC 3.3.5 (propolice)] on openbsd4
Type "help", "copyright", "credits" or "license" for more information.
>>> from netaddr import IPNetwork
>>> test = IPNetwork("fd91:f405:c161:6f7a::/64")
>>> print test
fd91:f405:c161:6f7a::/64
>>> list(test)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File
"/usr/local/lib/python2.5/site-packages/netaddr-0.7.3-py2.5.egg/netaddr/ip/__init__.py",
line 931, in __len__
"IP addresses! Use the .size property instead." % _sys.maxint)
IndexError: range contains more than 9223372036854775807 (sys.maxint) IP
addresses! Use the .size property instead.


How would I go about getting a list? or is it not possible?


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Updates:
Status: WontFix

Comment #1 on issue 51 by drkjam: __iter__ operator for IPv6 network
http://code.google.com/p/netaddr/issues/detail?id=51

Using list() on a /64 IPv6 network wouldn't be wise as it would chew up all
the
memory on your system and/or take a *very* long time to complete.

When dealing with networks containing more than sys.maxint (2^31) addresses
use the
.size property (as suggested by Exception message) to find out how many
addresses are
within a given range and the iterator protocol to access to all addresses
within it
in an in an efficient way, the simplest being :-

>>> for ip in IPNetwork("fd91:f405:c161:6f7a::/64"):
... # do something with your address

OR something like :-

>>> it = iter(IPNetwork("fd91:f405:c161:6f7a::/64"))
>>> ip = it.next()
IPAddress("fd91:f405:c161:6f7a::")

HTH