My preferred import ordering/style for Python code.

import_order.py

# Python *built-ins*
import datetime
import os
import time

# Pip-installed *Python* libraries
import boto
import requests

# Django *built-ins*
from django.contrib.auth.models import User
from django.db import models
from django.http import Http404
from django.shortcuts import render

# Pip-installed *Third-party* imports
from registration.models import Registration
import south
from tastypie import fields
from tastypie.resources import ModelResource

# Imports from *our project/app*
from airship.apps.composer.v2 import Whatever
from airship.apps.models import Application
from airship.utils import some_awesome_date_conversion_function