I'm currently converting a whole lot of IP address data from some quite ghastly flat files.Ghastliness aside, I'm trying to sort out a way to check each IP listed to check if it's a subnet address ...

To make mail hijacking more difficult, PyPI has been checking domain validity since June. In case of doubt, an abandoned email address loses its verification.

You're taking a new programming class this fall, and you don't know anything about code. Python is taught widely in schools, and it's one of the most loved programming languages because it's simple.