utils.py 文件源码

def _get_last_month():
    current = date.today()
    if current.day == 31:
        return date(current.year, current.month-1, (calendar.monthrange(current.year, current.month-1)[1])).strftime('%Y-%m')
    else:
        return date(current.year, current.month-1, current.day).strftime('%Y-%m')