# -*- coding: utf-8 -*-
from django.contrib import admin
from models import SomeClass

def register_adminmodel_hide_pk(modelclass):
    def modeladmin_class_factory(modelname, pkfld):
        exclude= (pkfld, )
        newclass = modelname + 'Admin'
        return type(str(newclass), (admin.ModelAdmin,), {'exclude': exclude})

    modelpkfld = modelclass._meta.pk.name
    modelname = modelclass.__name__
    modeladmin = modeladmin_class_factory(modelname, modelpkfld)
    admin.site.register(modelclass, modeladmin)

register_adminmodel_hide_pk(SomeClass)