“No installed app with label 'admin'” running Django migration. The app is installed correctly

问题

I am trying to use admin.LogEntry objects during a datamigration on Django 1.7

The 'django.contrib.admin' app is listed on INSTALLED_APPS.

On the shell, it works:

>>> from django.apps import apps
>>> apps.get_model('admin', 'LogEntry')
django.contrib.admin.models.LogEntry

But during the migration, it fails:

def do_it(apps, schema_editor):
    LogEntry = apps.get_model('admin', 'LogEntry')

Fails like this:

django-admin migrate
(...)
LookupError: No installed app with label 'admin'.

Using a debugger, I got that the 'admin' is not installed:

ipdb> apps.get_apps()
[]
ipdb> apps.all_models.keys()
['website', 'google', 'allauth', 'twitter', 'busca', 'conteudo', 'django_mobile', 'django_filters', 'videocenter', 'tinymce', 'oferta', 'programacaotv', 'contenttypes', 'suit', 'haystack', 'destaque', 'filer', 'galeria', 'auth', 'facebook', 'paintstore', 'critica', 'disqus', 'fichas', 'omeletop', 'autocomplete_light', 'modelsv1', 'temas', 'django_extensions', 'adv_cache_tag', 'taggit', 'social', 'personalidade']

WHY??

回答1:

The Django doc makes it clear:

When writing a RunPython function that uses models from apps other than the one in which the migration is located, the migration’s dependencies attribute should include the latest migration of each app that is involved, otherwise you may get an error similar to: LookupError: No installed app with label 'myappname' when you try to retrieve the model in the RunPython function using apps.get_model().

Code example:

# Imports are omitted for the sake of brevity

def move_m1(apps, schema_editor):
    LogEntry = apps.get('admin.logentry')
    # Other business logic here ...


class Migration(migrations.Migration):

    dependencies = [
        ('app1', '0001_initial'),

        # Below is the manually added dependency, so as to retrieve models
        # of 'django.contrib.admin' app with apps.get_model() in move_m1().
        #
        # Currently this is for Django 1.11. You need to look into
        # 'django/contrib/admin/migrations' directory to find out which is
        # the latest migration for other version of Django.
        ('admin', '0002_logentry_remove_auto_add'),
    ]

    operations = [
        migrations.RunPython(move_m1),
    ]

回答2:

I don't know the exact cause for this. Will have to dig into the source code. but for now a workaround is add ('admin', 'name_of_last_migration_in_admin_app') to the dependencies and the migrations shall go alright.

回答3:

I got the same error (but unrelated to the issue mentioned in question). I was using mysql db but there were no mysql client.

settings.py

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        # other details like name, user, host
    }
}

I installed mysqlclient (In ubuntu & Python3):

sudo apt-get install libmysqlclient-dev
sudo apt-get install python3-dev
pip install mysqlclient

回答4:

I was getting a similar error and I am a total novice programmer. One solution that worked for me was installing sqlparse. Try

pip install sqlparse

回答5:

Try looking further up your stack trace too. I got this error due to a misconfigured logger but I had to look further up the trace to find this issue!

In my case I had misnamed my environment variable DJANGO_LOG_LEVL as DEGUB instead of DEBUG (note the misspelling) and that caused the error.

回答6:

I also had this same error of "no installed app label 'admin' ". I was able to solve it by running the pip install sqlparse command

回答7:

For me it shows

raise LookupError(message)

LookupError: No installed app with label 'admin'.

and I solve it by pip installing every requirements manually I m using ubuntu 16.04

回答8:

For my case the LookupError was occuring because I had altered the models and added 'related_name' but had not run makemigrations and migrate.

来源：https://stackoverflow.com/questions/29565665/no-installed-app-with-label-admin-running-django-migration-the-app-is-insta