from dateutil.relativedelta import relativedelta as reldelta
from django.utils.timezone import timedelta as delta

CALENDAR_FREQUENCIES = {
    "daily": delta(days=1),
    "weekly": reldelta(weeks=1),
    "biweekly": reldelta(weeks=2),
    "monthly": reldelta(months=1),
    "yearly": reldelta(years=1)
}