Pulp

I've been familiarizing myself with Django's various settings and I'm on the fence about whether we should stick with the INI-style configuration or whether we should switch to YAML. The reason is some configuration options for Django are nested dictionaries or lists of lists. For example, a multi-database Django configuration looks like

DATABASES = {
    'default': {},
    'auth_db': {
        'NAME': 'auth_db',
        'ENGINE': 'django.db.backends.mysql',
        'USER': 'mysql_user',
        'PASSWORD': 'swordfish',
    },
    'primary': {
        'NAME': 'primary',
        'ENGINE': 'django.db.backends.mysql',
        'USER': 'mysql_user',
        'PASSWORD': 'spam',
    },
    'replica1': {
        'NAME': 'replica1',
        'ENGINE': 'django.db.backends.mysql',
        'USER': 'mysql_user',
        'PASSWORD': 'eggs',
    },
    'replica2': {
        'NAME': 'replica2',
        'ENGINE': 'django.db.backends.mysql',
        'USER': 'mysql_user',
        'PASSWORD': 'bacon',
    },
}

and a logging configuration looks like

LOGGING = {
        'version': 1,
        'disable_existing_loggers': False,
        'formatters': {
            'simple': {'format': 'pulp: %(name)s:%(levelname)s: %(message)s'},
        },
        'handlers': {
            'syslog': {
                'address': '/dev/log',
                'facility': 'pulp.server.logs.CompliantSysLogHandler.LOG_DAEMON',
                'class': 'pulp.server.logs.CompliantSysLogHandler',
                'formatter': 'simple',
            },
        },
        'loggers': {
            'pulp.platform': {
                'handlers': ['syslog'],
                'level': 'INFO',
            },
        }
    },

If you want to configure email notifications for certain events, the emails are in the format

ADMINS = [
    (<name>, <email>),
]

All of these could be translated to INI-style configurations, but I'm wondering if they'll be more complex than using YAML (from both a user and a developer perspective).

I am imagining having the databases be defined in several sections that start with the prefix 'database_<name>', for example

[database_auth_db]
name: 'auth_db'
user: 'pulp'
password: 'hunter2'

[database_primary]
name: 'primary'
user: 'postgres'
password: 'test'
host: 10.10.10.10

...

versus

databases:
  auth_db:
    name: auth_db
    user: pulp
    password: hunter2
  primary:
    name: primary
    user: postgres
    password: test
    host: 10.10.10.10

The downside is we'd depend on PyYAML (although we might have to already), and we don't get the automagic merging of configparser, but maybe it's still worth it. Does anyone have opinions one way or the other?