python之Django ImportError : No module named tango_with_django_project. 设置

在 Tango With Django 教程的第 5 章接近尾声时，我创建了一个脚本，用于使用名为的测试数据填充 SQLite 数据库:
~/Workspace/wad2/tango_with_django_project/populate_rango.py
报错后，我尝试直接从书上复制粘贴脚本，仍然报错如下:

H:\Workspace\wad2\tango_with_django_project>python populate_rango.py 
Traceback (most recent call last): 
  File "populate_rango.py", line 7, in <module> 
    django.setup() 
  File "C:\Python27\lib\site-packages\django\__init__.py", line 22, in setup 
    configure_logging(settings.LOGGING_CONFIG, settings.LOGGING) 
  File "C:\Python27\lib\site-packages\django\conf\__init__.py", line 53, in __ge 
tattr__ 
    self._setup(name) 
  File "C:\Python27\lib\site-packages\django\conf\__init__.py", line 41, in _set 
up 
    self._wrapped = Settings(settings_module) 
  File "C:\Python27\lib\site-packages\django\conf\__init__.py", line 97, in __in 
it__ 
    mod = importlib.import_module(self.SETTINGS_MODULE) 
  File "C:\Python27\lib\importlib\__init__.py", line 37, in import_module 
    __import__(name) 
ImportError: No module named tango_with_django_project.settings 

populate_rango.py

import os 
 
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 
                      'tango_with_django_project.settings') 
 
import django 
django.setup() 
from rango.models import Category, Page 
 
def populate(): 
 
    python_pages = [ 
        {"title": "Official Python Tutorial", 
         "url":"http://docs.python.org/2/tutorial/"}, 
        {"title":"How to Think like a Computer Scientist", 
         "url":"http://www.greenteapress.com/thinkpython/"}, 
        {"title":"Learn Python in 10 Minutes", 
         "url":"http://www.korokithakis.net/tutorials/python/"} ] 
 
    django_pages = [ 
        {"title":"Official Django Tutorial", 
         "url":"https://docs.djangoproject.com/en/1.9/intro/tutorial01/"}, 
        {"title":"Django Rocks", 
         "url":"http://www.djangorocks.com/"}, 
        {"title":"How to Tango with Django", 
         "url":"http://www.tangowithdjango.com/"} ] 
 
    other_pages = [ 
        {"title":"Bottle", 
         "url":"http://bottlepy.org/docs/dev/"}, 
        {"title":"Flask", 
         "url":"http://flask.pocoo.org"} ] 
 
    cats = {"Python": {"pages": python_pages}, 
            "Django": {"pages": django_pages}, 
            "Other Frameworks": {"pages": other_pages} } 
 
    for cat, cat_data in cats.items(): 
        c = add_cat(cat) 
        for p in cat_data["pages"]: 
            add_page(c, p["title"], p["url"]) 
 
    # Print out the categories we have added. 
    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)[0] 
    p.url=url 
    p.views=views 
    p.save() 
    return p 
 
def add_cat(name): 
    c = Category.objects.get_or_create(name=name)[0] 
    c.save() 
    return c 
 
# Start execution here! 
if __name__ == '__main__': 
    print("Starting Rango population script...") 
    populate() 

模型.py

from __future__ import unicode_literals 
from django.db import models 
 
class Category(models.Model): 
    name = models.CharField(max_length=128, unique=True) 
    views = models.IntegerField(default=0) 
    likes = models.IntegerField(default=0) 
 
    class Meta: 
        verbose_name_plural = 'Categories' 
 
    def __str__(self):  
        return self.name 
 
class Page(models.Model): 
    category = models.ForeignKey(Category) 
    title = models.CharField(max_length=128) 
    url = models.URLField() 
    views = models.IntegerField(default=0) 
 
    def __str__(self):  
        return self.title 

settings.py(相关代码)

import os 
 
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) 
TEMPLATE_DIR = os.path.join(BASE_DIR, 'tango_with_django_project', 'templates') 
STATIC_DIR = os.path.join(BASE_DIR, 'tango_with_django_project', 'static') 
MEDIA_DIR = os.path.join(BASE_DIR, 'tango_with_django_project', 'media') 

地点

~/Workspace/wad2/manage.py   
~/Workspace/wad2/tango_with_django_project/populate_rango.py   
~/Workspace/wad2/tango_with_django_project/settings.py   

有谁知道这些错误的可能原因是什么？ 这似乎是文件夹名称错误的常见原因，但我的脚本位于 tango_with_django_project 文件夹中，该文件夹已在我的 os.environ.setdefault 行中指定。 如果任何其他文件有用，我可以添加它们。

请您参考如下方法:

为了让您的 Django 项目将设置加载为 tango_with_django_project.settings，wad2 需要位于 Python 路径上。

最简单的解决方法是将 populate_rango.py 从 wad2/tango_with_django_project/ 目录向上移动到 wad2。

或者，您可以将父目录添加到 populate_rango.py 中的 python 路径

import sys 
sys.path.append('..') 
 
import os 
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 
                      'tango_with_django_project.settings')