Django：AppRegistryNotReady()

Python:2.7；德扬戈:1.7；Mac 10.9.4

我正在学习Tango with Django的教程

在第5章中，本教程介绍了如何创建填充脚本，该脚本可以自动为数据库创建一些数据，以便于开发.

我创造了一个新的世界.py处于同一管理级别.皮耶.

下面是panate_rango.py文件:

import os

def populate():
    python_cat = add_cat('Python')

    add_page(
        cat=python_cat,
        title="Official Python Tutorial",
        url="http://docs.python.org/2/tutorial/"
    )

    add_page(
        cat=python_cat,
        title="How to Think like a Computer Scientist",
        url="http://www.greenteapress.com/thinkpython/"
    )

    add_page(
        cat=python_cat,
        title="Learn Python in 10 Minutes",
        url="http://www.korokithakis.net/tutorials/python/"
    )

    django_cat = add_cat("Django")

    add_page(
        cat=django_cat,
        title="Official Django Tutorial",
        url="https://docs.djangoproject.com/en/1.5/intro/tutorial01/"
    )

    add_page(
        cat=django_cat,
        title="Django Rocks",
        url="http://www.djangorocks.com/"
    )

    add_page(
        cat=django_cat,
        title="How to Tango with Django",
        url="http://www.tangowithdjango.com/"
    )

    frame_cat = add_cat("Other Frameworks")

    add_page(
        cat=frame_cat,
        title="Bottle",
        url="http://bottlepy.org/docs/dev/"
    )

    add_page(
        cat=frame_cat,
        title="Flask",
        url="http://flask.pocoo.org"
    )

    for c in Category.objects.all():
        for p in Page.objects.filter(category=c):
            print "- {0} - {1}".format(str(c), str(p))


def add_page(cat, title, url, views=0):
    p = Page.objects.get_or_create(category=cat, title=title, url=url, views=views)[0]
    return p


def add_cat(name):
    c = Category.objects.get_or_create(name=name)[0]
    return c

if __name__ == '__main__':
    print "Starting Rango population script..."
    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'tangle.settings')
    from rango.models import Category, Page
    populate()

然后我在终端的manage.py级别运行python populate_rango.py，将引发AppRegistryNotReady():

django.core.exceptions.AppRegistryNotReady

然后我用谷歌搜索了一下，找到了大约this个:

Standalone scripts¶
If you’re using Django in a plain Python script — rather than a management command — and you rely on the DJANGO_SETTINGS_MODULE environment variable, you must now explicitly initialize Django at the beginning of your script with:

>>> import django
>>> django.setup()
Otherwise, you will hit an AppRegistryNotReady exception.

我还是不知道该怎么办，有人能帮忙吗？谢谢！