# -*- coding: utf-8 -*-

LEVELS = dict(
    10='completeness_10',
    15='completeness_15',
    20='completeness_20',
    50='completeness_50',
    100='completeness_100',
)

# -*- coding: utf-8 -*-

LEVELS = {
    10: 'completeness_10',
    15: 'completeness_15',
    20: 'completeness_20',
    50: 'completeness_50',
    100: 'completeness_100',
}

use dict syntax