odoo python datetime.date 转datetime.datetime

 File "G:od15odoohttp.py", line 307, in _handle_exception
    raise exception.with_traceback(None) from new_cause
TypeError: unsupported operand type(s) for -: 'datetime.date' and 'datetime.datetime'

dateobject = datetime.date.today()
datetime.datetime.combine(dateobject, datetime.time())

或者

datetime.datetime.combine(dateobject, datetime.time.min)

datetime.time()和datetime.time.min都表示午夜（00:00:00）。

def _compute_milestone_progress_time(self):
    for record in self:
        time_count = (datetime.datetime.combine(record.deadline, datetime.time()) - record.planned_date_begin).days

record.deadline 为datetime.date类型 ，所以需要转换一下