No, I just said its conventionally used as that but its not definition of a broadcast (in fact you can have any valid host address defined as broadcast as long as all members of the network agree on that)
You could, but then you are violating existing protocol specifications. RFC 1122 mandates, in sections 3.2.1.3 and 3.3.6, that certain addresses MUST be understood as broadcast addresses, by all nodes (independent of configuration). I think a Python IP address library should conform to all relevant RFCs.
Since you dont want to call the attribute ususally_the_broadcast_address or something, other names which tell you about the data would seem more appropriate (like greatest)
No. I think setting the broadcast address to something else just does not need to be supported. Regards, Martin