I am quite new to Django and Python. My environ is Win7 and Python3.4. Now following the tutorial in Django Official Website to build a web app. At first, everything works quite well and output are all expected and correct. But today when I re-run the command "python manage.py runserver", it gives me very strange err message as follows. Help please, many thanks!
$ 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.
From docs:
If you set DJANGO_SETTINGS_MODULE, access settings values somehow, then call configure(), Django will raise a RuntimeError indicating that settings have already been configured.
Also, it’s an error to call configure() more than once, or to call configure() after any setting has been accessed.
The problem is, by the time you call settings.configure() in mysite.polls.admin, settings were already configured. One option for suppressing the error would be adding some sanity check:
if not settings.configured:
settings.configure()