我是Django和Python的新手。我的环境是Win7和Python3.4。现在按照Django官方网站上的教程构建一个Web应用程序。起初,一切都运作良好,输出都是预期和正确的。但是今天当我重新运行命令“python manage.py runserver”时,它给出了我非常奇怪的错误消息,如下所示。请帮助,非常感谢!
$ python manage.py runserver
Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "C:\Python34\lib\site-packages\django\core\management\__init__.py", line 338, in execute_from_command_line
utility.execute()
File "C:\Python34\lib\site-packages\django\core\management\__init__.py", line 312, in execute
django.setup()
File "C:\Python34\lib\site-packages\django\__init__.py", line 18, in setup
apps.populate(settings.INSTALLED_APPS)
File "C:\Python34\lib\site-packages\django\apps\registry.py", line 115, in populate
app_config.ready()
File "C:\Python34\lib\site-packages\django\contrib\admin\apps.py", line 22, in ready
self.module.autodiscover()
File "C:\Python34\lib\site-packages\django\contrib\admin\__init__.py", line 24, in autodiscover
autodiscover_modules('admin', register_to=site)
File "C:\Python34\lib\site-packages\django\utils\module_loading.py", line 74, in autodiscover_modules
import_module('%s.%s' % (app_config.name, module_to_search))
File "C:\Python34\lib\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 2226, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 1200, in _load_unlocked
File "<frozen importlib._bootstrap>", line 1129, in _exec
File "<frozen importlib._bootstrap>", line 1471, in exec_module
File "<frozen importlib._bootstrap>", line 321, in _call_with_frames_removed
File "D:\360\My Cloud\5 Software\26 Eclipse\1 Python\1TDD_Django\tdd_django\mysite\polls\admin.py", line 34, in <module>
settings.configure()
File "C:\Python34\lib\site-packages\django\conf\__init__.py", line 58, in configure
raise RuntimeError('Settings already configured.')
RuntimeError: Settings already configured.
答案 0 :(得分:3)
来自docs:
如果您设置 DJANGO_SETTINGS_MODULE ,以某种方式访问设置值,然后调用 configure(),Django将引发 RuntimeError ,表明设置已经已配置。
此外,多次调用configure()或在访问任何设置后调用configure()是错误的。
问题是,当您在 mysite.polls.admin 中调用settings.configure()
时,已经配置了设置。抑制错误的一个选择是添加一些健全性检查:
if not settings.configured:
settings.configure()