如何計算數目小時9

Question

如何計算在我的例子小時：

（（FINISH - START） - 暫停）在窗體視圖

格式

開始= 02 /二千〇十七分之十7點55分54秒

光潔度= 2017年2月10日十六點50分54秒

暫停= 1小時（默認）

---

在控制檯的日期時間是這樣的：2017年2月10日7點55分54秒

需要此==>結果= 07:55

How in @api.depends('start', 'finish') 
    def calculate_hours(self): 
     # 

Answer 1

你可以使用timedelta或相對增量來計算差異。在此之前，你必須轉換爲日期時間對象。下面是我會怎麼做

from openerp import api, fields 
# if use relativedelta 
from dateutil.relativedelta import relativedelta 


@api.depends('start', 'finish') 
def calculate_hours(self): 
    for record in self: 
    start_dt = fields.Datetime.from_string(record.start) 
    finish_dt = fields.Datetime.from_string(record.finish) 

    # using relativedelta 
    # pause time = 1, you could change to the number you desire. 
    pause = relativedelta(hours=1) 
    difference = relativedelta(finish_dt, start_dt) - pause 
    # from relative delta you could get hours or minutes as you wanted 
    # hours = difference.hours 
    # minutes = difference.minutes 

    # using timedelta 
    # pause = timedelta(seconds=3600) 
    # difference = finish_dt - start_dt - pause 
    # first element of timedelta is days, if you want to calculate the difference of days in hours, add difference.days * 24 
    # hours = int(difference.seconds/3600) 
    # minutes = (difference.seconds % 3600)/60 
    # your code .... 

希望我的回答能滿足您的要求。