I'm a newbie in Django/Python. I just setup Django successfully with vagrant on my computer. But I want to change the default database from sqlite to postgresql.
To do so, I just changed the database section on the setting.py file to :
# Database
# https://docs.djangoproject.com/en/2.0/ref/settings/#databases
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql',
'NAME': os.path.join(BASE_DIR, 'db.postgresql'),
}
}
Now whenever I run the command python manage.py runserver 0.0.0.0:8080 (which used to work well), I get the following error :
Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x7fb91ed95ea0>
Traceback (most recent call last):
File "/home/ubuntu/.virtualenvs/meshine_api/local/lib/python3.5/site-packages/django/utils/autoreload.py", line 225, in wrapper
fn(*args, **kwargs)
File "/home/ubuntu/.virtualenvs/meshine_api/local/lib/python3.5/site-packages/django/core/management/commands/runserver.py", line 113, in inner_run
autoreload.raise_last_exception()
File "/home/ubuntu/.virtualenvs/meshine_api/local/lib/python3.5/site-packages/django/utils/autoreload.py", line 248, in raise_last_exception
raise _exception[1]
File "/home/ubuntu/.virtualenvs/meshine_api/local/lib/python3.5/site-packages/django/core/management/__init__.py", line 327, in execute
autoreload.check_errors(django.setup)()
File "/home/ubuntu/.virtualenvs/meshine_api/local/lib/python3.5/site-packages/django/utils/autoreload.py", line 225, in wrapper
fn(*args, **kwargs)
File "/home/ubuntu/.virtualenvs/meshine_api/local/lib/python3.5/site-packages/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/home/ubuntu/.virtualenvs/meshine_api/local/lib/python3.5/site-packages/django/apps/registry.py", line 112, in populate
app_config.import_models()
File "/home/ubuntu/.virtualenvs/meshine_api/local/lib/python3.5/site-packages/django/apps/config.py", line 198, in import_models
self.models_module = import_module(models_module_name)
File "/home/ubuntu/.virtualenvs/meshine_api/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 958, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 665, in exec_module
File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
File "/home/ubuntu/.virtualenvs/meshine_api/local/lib/python3.5/site-packages/django/contrib/auth/models.py", line 2, in <module>
from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
File "/home/ubuntu/.virtualenvs/meshine_api/local/lib/python3.5/site-packages/django/contrib/auth/base_user.py", line 47, in <module>
class AbstractBaseUser(models.Model):
File "/home/ubuntu/.virtualenvs/meshine_api/local/lib/python3.5/site-packages/django/db/models/base.py", line 114, in __new__
new_class.add_to_class('_meta', Options(meta, app_label))
File "/home/ubuntu/.virtualenvs/meshine_api/local/lib/python3.5/site-packages/django/db/models/base.py", line 315, in add_to_class
value.contribute_to_class(cls, name)
File "/home/ubuntu/.virtualenvs/meshine_api/local/lib/python3.5/site-packages/django/db/models/options.py", line 205, in contribute_to_class
self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
File "/home/ubuntu/.virtualenvs/meshine_api/local/lib/python3.5/site-packages/django/db/__init__.py", line 33, in __getattr__
return getattr(connections[DEFAULT_DB_ALIAS], item)
File "/home/ubuntu/.virtualenvs/meshine_api/local/lib/python3.5/site-packages/django/db/utils.py", line 202, in __getitem__
backend = load_backend(db['ENGINE'])
File "/home/ubuntu/.virtualenvs/meshine_api/local/lib/python3.5/site-packages/django/db/utils.py", line 110, in load_backend
return import_module('%s.base' % backend_name)
File "/home/ubuntu/.virtualenvs/meshine_api/lib/python3.5/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "/home/ubuntu/.virtualenvs/meshine_api/local/lib/python3.5/site-packages/django/db/backends/postgresql/base.py", line 32, in <module>
PSYCOPG2_VERSION = psycopg2_version()
File "/home/ubuntu/.virtualenvs/meshine_api/local/lib/python3.5/site-packages/django/db/backends/postgresql/base.py", line 28, in psycopg2_version
version = psycopg2.__version__.split(' ', 1)[0]
AttributeError: module 'psycopg2' has no attribute '__version__'
I don't know why!
Here is my vagrant file :
# -*- mode: ruby -*-
# vi: set ft=ruby :
Vagrant.configure("2") do |config|
config.vm.box = "ubuntu/xenial64"
config.vm.network "forwarded_port", host_ip: "127.0.0.1", guest: 8080, host: 8080
config.vm.provision "shell", inline: <<-SHELL
# Update and upgrade the server packages.
sudo apt-get update
sudo apt-get -y upgrade
# Set Ubuntu Language
sudo locale-gen en_GB.UTF-8
# Install Python, SQLite and pip
sudo apt-get install -y python3-dev sqlite python-pip postgresql postgresql-contrib
# Upgrade pip to the latest version.
sudo pip install --upgrade pip
# Install and configure python virtualenvwrapper.
sudo pip install virtualenvwrapper
if ! grep -q VIRTUALENV_ALREADY_ADDED /home/ubuntu/.bashrc; then
echo "# VIRTUALENV_ALREADY_ADDED" >> /home/ubuntu/.bashrc
echo "WORKON_HOME=~/.virtualenvs" >> /home/ubuntu/.bashrc
echo "PROJECT_HOME=/vagrant" >> /home/ubuntu/.bashrc
echo "source /usr/local/bin/virtualenvwrapper.sh" >> /home/ubuntu/.bashrc
fi
SHELL
end
Please where I'm wrong?
