Using Vagrant and VM with python-django & PostgreSQL

Question

I am trying to make a python-django project on a VM with Python/Django 2.7.6 and PostgreSQL 9.3.4 installed.

I am following this tutorial. After making changes in settings.py for Postgres, when I do vagrant up and vagrant ssh, and after python manage.py syncdb, it shows the following error.

 File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
 File "/usr/lib/python2.7/dist-packages/django/core/management/__init__.py", line 399, in execute_from_command_line
utility.execute()
 File "/usr/lib/python2.7/dist-packages/django/core/management/__init__.py", line 392, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
 File "/usr/lib/python2.7/dist-packages/django/core/management/base.py", line 242, in run_from_argv
self.execute(*args, **options.__dict__)
File "/usr/lib/python2.7/dist-packages/django/core/management/base.py", line 280, in execute
translation.activate('en-us')
File "/usr/lib/python2.7/dist-packages/django/utils/translation/__init__.py", line 130, in activate
return _trans.activate(language)
File "/usr/lib/python2.7/dist-packages/django/utils/translation/trans_real.py", line 188, in activate
_active.value = translation(language)
File "/usr/lib/python2.7/dist-packages/django/utils/translation/trans_real.py", line 177, in translation
default_translation = _fetch(settings.LANGUAGE_CODE)
File "/usr/lib/python2.7/dist-packages/django/utils/translation/trans_real.py", line 159, in _fetch
app = import_module(appname)
File "/usr/lib/python2.7/dist-packages/django/utils/importlib.py", line 40, in import_module
__import__(name)
File "/usr/lib/python2.7/dist-packages/django/contrib/admin/__init__.py", line 6, in <module>
from django.contrib.admin.sites import AdminSite, site
File "/usr/lib/python2.7/dist-packages/django/contrib/admin/sites.py", line 4, in <module>
from django.contrib.admin.forms import AdminAuthenticationForm
File "/usr/lib/python2.7/dist-packages/django/contrib/admin/forms.py", line 6, in <module>
from django.contrib.auth.forms import AuthenticationForm
File "/usr/lib/python2.7/dist-packages/django/contrib/auth/forms.py", line 17, in <module>
from django.contrib.auth.models import User
File "/usr/lib/python2.7/dist-packages/django/contrib/auth/models.py", line 48, in <module>
class Permission(models.Model):
File "/usr/lib/python2.7/dist-packages/django/db/models/base.py", line 96, in __new__
new_class.add_to_class('_meta', Options(meta, **kwargs))
File "/usr/lib/python2.7/dist-packages/django/db/models/base.py", line 264, in add_to_class
value.contribute_to_class(cls, name)
File "/usr/lib/python2.7/dist-packages/django/db/models/options.py", line 124, in contribute_to_class
self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
File "/usr/lib/python2.7/dist-packages/django/db/__init__.py", line 34, in __getattr__
return getattr(connections[DEFAULT_DB_ALIAS], item)
File "/usr/lib/python2.7/dist-packages/django/db/utils.py", line 198, in __getitem__
backend = load_backend(db['ENGINE'])
File "/usr/lib/python2.7/dist-packages/django/db/utils.py", line 113, in load_backend
return import_module('%s.base' % backend_name)
File "/usr/lib/python2.7/dist-packages/django/utils/importlib.py", line 40, in import_module
__import__(name)
File "/usr/lib/python2.7/dist-packages/django/db/backends/postgresql_psycopg2/base.py", line 25, in <module>
raise ImproperlyConfigured("Error loading psycopg2 module: %s" % e)

django.core.exceptions.ImproperlyConfigured: Error loading psycopg2 module: No module named psycopg2

Also one more thing, I am able to run a project with SQLite on the VM.

What to do ?

Answer 1

pyscopg2 is the name of the Python module normally used to interface with Postgresql. You will need to install it.

You should be able to install it using Pip with pip install psycopg2 . Pip itself can usually be found using your package manager - on Ubuntu, for instance, IIRC the package is called python-pip for Python 2 and python3-pip for Python 3.