[Django]-Django on Google AppEngine with CloudSQL: How to connect database (Error 2002, Can't connect to local MySQL server..)

Looks like at the time, you were missing the password field as well…

    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'test01',
        'USER': 'test01',
        'PASSWORD': '[password]',
        'HOST': '/cloudsql/myapp-test01:myapp-db-test01',
        'PORT': '3306',
    }

Using the GUI for Cloud SQL, you can always add new Super Admin level users to the Cloud SQL instance in case you’re unsure what user to use as well.