class CashSuper:
def AcceptCash(self,money):
return 0
class CashNormal(CashSuper):
def AcceptCash(self,money):
return money
class CashRebate(CashSuper):
discount = 0
def __init__(self,ds):
self.discount = ds
def AcceptCash(self,money):
return money * self.discount
class CashReturn(CashSuper):
total = 0;
ret = 0;
def __init__(self,t,r):
self.total = t
self.ret = r
def AcceptCash(self,money):
if (money>=self.total):
return money - self.ret
else:
return money
class CashContext:
strategy = {}
strategy[1] = CashNormal()
strategy[2] = CashRebate(0.8)
strategy[3] = CashReturn(300,100)
# def __init__(self,i):
# self.cs = strategy[i]
# def GetResult(self,money):
# return self.cs.AcceptCash(money)
def createCashSuper(self,ch,money):
if ch in self.strategy:
op = self.strategy[ch]
else:
op = strategy[1]
return op.AcceptCash(money)
if __name__ == "__main__":
money = input("money:")
abc = CashContext()
ctype = input("type:[1]for normal,[2]for 80% discount [3]for 300 -100.")
# if ctype in abc.strategy:
# cc = CashContext.strategy[ctype]
# else:
# print "Undefine type.Use normal mode."
# cc = CashContext.strategy[1]
print "you will pay:%d" %(abc.createCashSuper(ctype,money))
# class CashContext:
# def __init__(self,csuper):
# self.cs = csuper
# def GetResult(self,money):
# return self.cs.AcceptCash(money)
#
# if __name__ == "__main__":
# money = input("money:")
# strategy = {}
# strategy[1] = CashContext(CashNormal())
# strategy[2] = CashContext(CashRebate(0.8))
# strategy[3] = CashContext(CashReturn(300,100))
# ctype = input("type:[1]for normal,[2]for 80% discount [3]for 300 -100.")
# if ctype in strategy:
# cc = strategy[ctype]
# else:
# print "Undefine type.Use normal mode."
# cc = strategy[1]
# print "you will pay:%d" %(cc.GetResult(money))
