没有名为“polls.apps.PollsConfigDjango”的模块；Django项目教程2

Question

所以，我一直按照教程中的步骤在这里https://docs.djangoproject.com/en/1.9/intro/tutorial02/进行操作，我到达了应该运行此命令的步骤：

python manage.py makemigrations polls

当我运行它时，会出现以下错误：

python manage.py makemigrations polls
Traceback (most recent call last):
  File "<frozen importlib._bootstrap>", line 2218, in_find_and_load_unlocked
AttributeError: 'module' object has no attribute '__path__'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/home/tgumm/pythonenv/tutorial/lib/python3.4/site-packages/django/core/management/__init__.py", line 353, in execute_from_command_line
utility.execute()
  File "/home/tgumm/pythonenv/tutorial/lib/python3.4/site-packages/django/core/management/__init__.py", line 327, in execute
django.setup()
  File "/home/tgumm/pythonenv/tutorial/lib/python3.4/site-packages/django/__init__.py", line 18, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/home/tgumm/pythonenv/tutorial/lib/python3.4/site-packages/django/apps/registry.py", line 85, in populate
app_config = AppConfig.create(entry)
  File "/home/tgumm/pythonenv/tutorial/lib/python3.4/site-packages/django/apps/config.py", line 116, in create
mod = import_module(mod_path)
  File "/home/tgumm/pythonenv/tutorial/lib/python3.4/importlib/__init__.py", line 109, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 2254, in _gcd_import
  File "<frozen importlib._bootstrap>", line 2237, in _find_and_load
  File "<frozen importlib._bootstrap>", line 2212, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 321, in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 2254, in _gcd_import
  File "<frozen importlib._bootstrap>", line 2237, in _find_an``d_load
  File "<frozen importlib._bootstrap>", line 2221, in _find_and_load_unlocked
ImportError: No module named 'polls.apps.PollsConfigdjango'; 'polls.apps' is not a package

以下是我的模特：

from django.db import models

# Create your models here.
from django.db import models


class Question(models.Model):
    question_text = models.CharField(max_length=200)
    pub_date = models.DateTimeField('date published')


class Choice(models.Model):
    question = models.ForeignKey(Question, on_delete=models.CASCADE)
    choice_text = models.CharField(max_length=200)
    votes = models.IntegerField(default=0)

Answer 1

ImportError: No module named 'polls.apps.PollsConfigdjango'

你忘了在列表中添加“，”

Answer 2

第一个问题是回溯中的此警告：

No module named 'polls.apps.PollsConfigdjango'

这意味着您在INSTALLED_APPS设置中的'polls.apps.PollsConfig后缺少逗号。应该是：

INSTALLED_APPS = (
    ...
    'polls.apps.PollsConfig',
    'django....',
    ...
)

第二个问题是警告'polls.apps' is not a package。这表明您已经安装了Django 1.8，但是您正在遵循django1.9教程。

如果您使用的是Django 1.8，那么请遵循1.8教程，这样您就不会遇到这样的问题。在Django 1.8教程中，将polls应用程序添加到INSTALLED_APPS是covered here。注意，它不使用PollsConfig。

INSTALLED_APPS = (
    ...
    'polls',
)

Answer 3

在“polls.apps.PollsConfigdjango”后检查逗号“，”