forms.py

class SubnetForm(forms.Form):
    # ...略
    @staticmethod
    def int_to_human(address):
        # ...略
        return ".".join(str(int(part.ljust(8, "0"), 2)) for part in parts)

    def get_network_information(self):
        return ({
            "address": self.int_to_human(address),
            "broadcast": self.int_to_human(broadcast),
            "cidr": cidr,
            "first_host": self.int_to_human(first_host),
            "last_host": self.int_to_human(last_host),
            "network": self.int_to_human(network),
            "num_hosts": num_hosts,
        })

views.py

from .forms import SubnetForm

@login_required  
def ip_use_count(request):
    form = SubnetForm(request.POST)

    first_host =  form.get_network_information().values()[6]
    last_host  =  form.get_network_information().values()[2]
    subnet_id = form.get_network_information().values()[0]
    broadcast = form.get_network_information().values()[1]
    cidr = form.get_network_information().values()[4]