reports.py 文件源码

def customer_monthly_usage(subscription_start, start=None, end=None):
    if start is None:
        start = subscription_start

    # regardless of start, the monthly iterator must use subscription_start for
    # the sake of enumerating.
    periods = iter_months(start=subscription_start,
                          end=end or timezone.now())

    for m, usage in enumerate(usage_for_periods(periods), 1):
        if usage['period']['end'] <= start:
            continue
        usage.update(
            labels=dict(
                year_month=label_year_month_m(m),
                year_quarter=label_year_quarter_m(m),
                year=label_year_m(m),
            ),
        )
        yield usage