python - Django : Can't import 'module'. Check that module AppConfig.name is correct -


might answered question, here have same problem (kind of) had. problem is, it's trick, 1 line, no explanation (and still it's different solution given works, , that's part of problem). here's project structure, simplified:

manage.py compfactu/---settings.py           |--__init__.py           |--core/--------__init__.py                          |-apps.py

so here how added app in installed_apps:

apps.py

from django.apps import appconfig   class coreconfig(appconfig):     name = 'core'

settings.py

installed_apps = [      ...     #compfactu modules     'compfactu.core.apps.coreconfig', ]

as read django 1.11 documentation, , quote :

new applications should avoid default_app_config. instead should require dotted path appropriate appconfig subclass configured explicitly in installed_apps.

well nice, it's new application should : i'm getting error. , it's not problem of pythonpath, cause opened python shell , can from compfactu.core.apps import coreconfig no problem (print sys.path too, everything's fine).

but have error, here's full traceback:

traceback (most recent call last):   file "/home/jbjaillet/projets/venvcompfactu/lib/python3.5/site-packages/django/apps/config.py", line 147, in create     app_module = import_module(app_name)   file "/home/jbjaillet/projets/venvcompfactu/lib/python3.5/importlib/__init__.py", line 126, in import_module     return _bootstrap._gcd_import(name[level:], package, level)   file "<frozen importlib._bootstrap>", line 986, in _gcd_import   file "<frozen importlib._bootstrap>", line 969, in _find_and_load   file "<frozen importlib._bootstrap>", line 956, in _find_and_load_unlocked importerror: no module named 'core'  during handling of above exception, exception occurred:  traceback (most recent call last):   file "/home/jbjaillet/projets/venvcompfactu/lib/python3.5/site-packages/django/utils/autoreload.py", line 228, in wrapper     fn(*args, **kwargs)   file "/home/jbjaillet/projets/venvcompfactu/lib/python3.5/site-packages/django/core/management/commands/runserver.py", line 117, in inner_run     autoreload.raise_last_exception()   file "/home/jbjaillet/projets/venvcompfactu/lib/python3.5/site-packages/django/utils/autoreload.py", line 251, in raise_last_exception     six.reraise(*_exception)   file "/home/jbjaillet/projets/venvcompfactu/lib/python3.5/site-packages/django/utils/six.py", line 685, in reraise     raise value.with_traceback(tb)   file "/home/jbjaillet/projets/venvcompfactu/lib/python3.5/site-packages/django/utils/autoreload.py", line 228, in wrapper     fn(*args, **kwargs)   file "/home/jbjaillet/projets/venvcompfactu/lib/python3.5/site-packages/django/__init__.py", line 27, in setup     apps.populate(settings.installed_apps)   file "/home/jbjaillet/projets/venvcompfactu/lib/python3.5/site-packages/django/apps/registry.py", line 85, in populate     app_config = appconfig.create(entry)   file "/home/jbjaillet/projets/venvcompfactu/lib/python3.5/site-packages/django/apps/config.py", line 151, in create     app_name, mod_path, cls_name, django.core.exceptions.improperlyconfigured: cannot import 'core'. check 'compfactu.core.apps.coreconfig.name' correct.

and there, files , class have been generated django (manage.py startapp). , when what's told in question linked above, doing :

installed_apps = [      ...     #compfactu modules     'compfactu.core', ]

it works ! , don't point ! reading doc (part i've quoted), should not work (noting don't have default_app_config in __init__.py.

so, question found "trick" no explanation, i'm here asking why works way when shouldn't, , why solution in official doc doesn't work?

thank in advance time.

according documentation, appconfig.name full python path application.

appconfig.name

full python path application, e.g. 'django.contrib.admin'.

this attribute defines application configuration applies to. must set in appconfig subclasses.

it must unique across django project.

https://docs.djangoproject.com/en/1.11/ref/applications/#django.apps.appconfig.name

try this:

class coreconfig(appconfig):     name = 'compfactu.core'

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