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python/django database connection issue

Database settings
DATABASES = {
'default': {
'ENGINE': os.environ.get('DB_ENGINE', "mysql"),
'NAME': os.environ.get('DB_NAME', "django_db"),
'USER': os.environ.get('DB_USER', "root"),
'PASSWORD': os.environ.get('DB_PASS', "123456798"),
'HOST': os.environ.get('DB_HOST', "localhost"),
'PORT': os.environ.get('DB_PORT'),
}
}
error
django.core.exceptions.ImproperlyConfigured: 'mysql' isn't an available database backend or couldn't be imported. Check the above exception. To use one of the built-in backends, use 'django.db.backends.XXX', where XXX is one of:
'mysql', 'oracle', 'postgresql', 'sqlite3'
Connecting with mysql to generate migration but facing issue
Its my first time and facing following above issue please guide.

Instead of :
mysql in 'ENGINE': os.environ.get('DB_ENGINE', "mysql"),
Try this:
'ENGINE': os.environ.get('DB_ENGINE', "django.db.backends.mysql"),

DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql',
'NAME': 'django_db',
'USER': 'root',
'PASSWORD': '123456798',
}
}
Try this to establish a connection.
I don't usually add HOST or Port but it still connect to database.
I only mention Host or Port if they don't have the default settings.

psycopg2 cant connect to postgres DB psycopg2.OperationalError

my db setting
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql_psycopg2',
'NAME': 'test',
'HOST': '127.0.0.1',
'USER': 'postgres',
'PORT': '5432',
'PASSWORD': '1234'
}
}
i try python manage.py migrate but have this error
EDIT: it happen when i re-install python

I'm stupid, I wrote the wrong password in the settings

Change django.db.backends.postgresql_psycopg2 to django.db.backends.postgresql.

How to indicate to a specific version of database? [Django] [PostgreSQL]

I using django version 3.0.2.
I'd like to use postgreSQL as my instance db.
And there are two version postgreSQL in server.
After config setting.py DATABASES parameter, and runserver.
It showed error.
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql_psycopg2',
'NAME': 'dj_web_console',
'USER': 'django',
'PASSWORD': 'django',
'HOST': 'localhost',
'PORT': '',
}
}
psycopg2.OperationalError: FATAL: password authentication failed for user "django"
I'm sure that the username and password are correct.
How to config pg_path in Django as odoo:
In this case, I can use the specific version of pgsql. And run smoothly.

I solve this by indicating the port of the version I installed.
In this case, I have a version 9.6 which install in 5432 and the other is 5433.
So I just solved this by filling in 5433.
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql_psycopg2',
'NAME': 'dj_web_console',
'USER': 'django',
'PASSWORD': 'django',
'HOST': 'localhost',
'PORT': '5433',
}
}

How to connect mysql in django

Here is my connection details
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql',
'NAME': 'django4webo1',
'USER': 'root',
'PASSWORD': '',
'HOST': 'localhost',
'PORT': '3306',
}
}
when i start server error will come and i also need migrations table in db
super(Connection, self).__init__(*args, **kwargs2)
django.db.utils.OperationalError: (1049, "Unknown database 'django4webo1'")

You need to create first your mysql database and then configure your settings as:
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql',
'NAME': '<your_db_name>',
'USER': '<your_username_in_db>'
'PASSWORD': '<your_password_to_access_db>',
'HOST': 'localhost',
'PORT': '3306'
}
}
Note: Before you run the mirations and migrate you need to create a mysql database, after that run the migrations python manage.py makemigrations and then migrate the database python manage.py migrate

Lost connection to MySQLserver

I try to run my app django but I get this error
super(Connection, self).__init__(*args, **kwargs2)
django.db.utils.OperationalError: (2013, "Lost connection to MySQL server at 'handshake: reading inital communication packet', syste
m error: 10061")
my databases is declared as
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql',
'NAME': 'sdms_tracker',
'USER': 'root',
'PASSWORD': 'anna',
'HOST': 'localhost',
'PORT': '82',
'OPTIONS': {"init_command": "SET storage_engine=MyISAM"},
}
}

Problem was with Django configuration. MySQL port that was set to
'PORT': '82'
Instead of
'PORT': '3306