pkg_resources.DistributionNotFound: Django==1.8.3 in Django 1.9 - django

Question

I use Django 1.9 after updating of Django 1.8, and when i type command
django-admin runserver
I got this one error:
Traceback (most recent call last):
File "/usr/local/bin/django-admin", line 5, in <module>
from pkg_resources import load_entry_point
File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2749, in <module>
working_set = WorkingSet._build_master()
File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 446, in _build_master
return cls._build_from_requirements(__requires__)
File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 459, in _build_from_requirements
dists = ws.resolve(reqs, Environment())
File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 628, in resolve
raise DistributionNotFound(req)
pkg_resources.DistributionNotFound: Django==1.8.3
And then I try to type this one command:
django-admin.py runserver
I got this one error:
Traceback (most recent call last):
File "/usr/local/bin/django-admin.py", line 5, in <module>
management.execute_from_command_line()
File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 353, in execute_from_command_line
utility.execute()
File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 345, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 195, in fetch_command
klass = load_command_class(app_name, subcommand)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 39, in load_command_class
module = import_module('%s.management.commands.%s' % (app_name, name))
File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
__import__(name)
File "/usr/local/lib/python2.7/dist-packages/django/core/management/commands/runserver.py", line 16, in <module>
from django.db.migrations.executor import MigrationExecutor
File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/executor.py", line 7, in <module>
from .loader import MigrationLoader
File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/loader.py", line 10, in <module>
from django.db.migrations.recorder import MigrationRecorder
File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/recorder.py", line 12, in <module>
class MigrationRecorder(object):
File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/recorder.py", line 26, in MigrationRecorder
class Migration(models.Model):
File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/recorder.py", line 27, in Migration
app = models.CharField(max_length=255)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/__init__.py", line 1072, in __init__
super(CharField, self).__init__(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/fields/__init__.py", line 166, in __init__
self.db_tablespace = db_tablespace or settings.DEFAULT_INDEX_TABLESPACE
File "/usr/local/lib/python2.7/dist-packages/django/conf/__init__.py", line 55, in __getattr__
self._setup(name)
File "/usr/local/lib/python2.7/dist-packages/django/conf/__init__.py", line 41, in _setup
% (desc, ENVIRONMENT_VARIABLE))
django.core.exceptions.ImproperlyConfigured: Requested setting DEFAULT_INDEX_TABLESPACE, but settings are not configured. You must either define the environment variable DJANGO_SETTINGS_MODULE or call settings.configure() before accessing settings.
I try uninstall and install Django. But i still have this errors. Hope somebody can help me with it. Thanks

Answer 1

You shouldn't normally use django-admin, except when you do django-admin startproject.
After you have created the project, it is easier to use manage.py to run the dev server, because it takes care of setting the path and settings module for you.
./manage.py runserver
See the docs for more information.

Answer 2

Maybe you used another python version? It is python 2.7 now, and it seems you don't installed django properly for python2.7. You can try
python3 manage.py runserver
for using python3 in ubuntu (it is installed by default and accessibler with python3), or try to define how to run it with another python version.