from dateutil.relativedelta import relativedelta

durations = [
    "5 seconds",
    "25 seconds",
    "2 minutes",
    "10 minutes",
    "1 hour",
    "5 hours",
    "1 day",
    "5 days",
    "25 days",
    "4 months",
]


def rd(label):
    num, _, unit = label.partition(" ")
    if not unit.endswith("s"):
        unit += "s"
    return relativedelta(**{unit: int(num)})


bins = (
    [{"label": None, "delta": None}]
    + [{"label": label, "delta": rd(label)} for label in durations]
    + [{"label": "Never", "delta": None}]
)