def debentureTransferWhenNoRepay(Ar,b,dealDate,lastPayday,productType):
D=min(dateDeltaCalc(lastPayday,dealDate),30)
if productType=="本息保障":
x=1
elif productType =="本金保障":
x=0
F=Ar+D/30*Ar*b*x
return F
def debentureTransferWhenAllPayed(Ar,b,dealDate,lastPayday,productType,n):
D=min(dateDeltaCalc(dealDate,lastPayday),30)
Ar_new=Ar/(1+b)**n
F=Ar-Ar*D/30*b
return F
def debentureTransferWhenOnePayed(Ar,b,dealDate,lastPayday):
D=min(dateDeltaCalc(dealDate,lastPayday),30)
F=Ar-D/30*Ar*b
return F