明细不能重复

import clr

clr.AddReference("System")

clr.AddReference("Kingdee.BOS")

clr.AddReference("Kingdee.BOS.Core")

clr.AddReference("Kingdee.BOS.DataEntity")

clr.AddReference("Kingdee.BOS.App")

clr.AddReference("Kingdee.BOS.Contracts")

clr.AddReference("Kingdee.BOS.ServiceHelper")

from Kingdee.BOS.App import *  

from Kingdee.BOS import *

from Kingdee.BOS.Contracts import *

from Kingdee.BOS.Contracts.Report import *

from Kingdee.BOS.Core import *

from Kingdee.BOS.Core.Metadata import *

from Kingdee.BOS.Core.Report import *

from Kingdee.BOS.Core.SqlBuilder import *

from Kingdee.BOS.Core.Enums import * 

from Kingdee.BOS.App.Data import *

from Kingdee.BOS.Orm.DataEntity import *

from System import *

from System.ComponentModel import *

from System.Collections.Generic import *

from System.Text import *

from System.Threading.Tasks import *

from Kingdee.BOS.ServiceHelper import *

def show_warning(message):

    this.View.ShowErrMessage(message)

def is_date_range_overlapping(start1, end1, start2, end2):  

    return not (end1 <= start2 or end2 <= start1)

def check_overlapping_periods(data_object, entry_property_name):  

    entries = getattr(data_object, entry_property_name, None)   

    if entries is None or