Fix Python – django test app error – Got an error creating the test database: permission denied to create database

When I try to test any app with command (I noticed it when I tried to deploy myproject using fabric, which uses this command):
python manage.py test appname

I get this error:
Creating test database for alias ‘default’…
Got an error creating the test database: permission denied to create database

Type ‘yes’ if you would like to try deleting the….