On Wed, 16 Sep 2009 at 12:50, exar...@twistedmatrix.com wrote:
On 11:10 am, ncogh...@gmail.com wrote:
Or, to put it another way, given an arbitrary host in a network (e.g.
your own machine or the default gateway) and the netmask for that
network, calculate the network address.
With a "lax" parser on IPNetwork this is a trivial task - just create
the network object and then retrieve the network address from it.
If, on the other hand, IPNetwork demands that you already know the
network address before allowing you to create an IPNetwork object, then
you're pretty much out of luck - if all you have to work with are the IP
strings then this is actually a tricky calculation.
If the default IPNetwork constructor was made more strict, then this
functionality would have to be made available another way (probably as
an alternate constructor like IPNetwork.from_host_address rather than as
a boolean 'strict' option)
This seems to be the right solution to me, particularly the use of an
alternate constructor rather than an ambiguously named flag.
+1
--David
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