股票模拟买卖

来源：互联网发布：怎么利用淘宝达人赚钱编辑：程序博客网时间：2024/04/29 23:47
# -*- coding:cp936 -*-class stock:    def __init__(self,capital=10000):        self.base = capital        self.capital = capital        self.stock_holdings = 0        self.commission_rate = 0.0005 #佣金比例        self.stamp_tax = 0.001        #印花税        self.pay = 0        self.earn = 0        self.costing = 0    def __buy_fee(self,price,quantity):        if price*quantity*self.commission_rate < 5:            return 5        else:            return price*quantity*self.commission_rate    def __sell_fee(self,price,quantity):        return self.__buy_fee(price,quantity) + price*quantity*self.stamp_tax    def __show(self):        print('\n当前本金:%.2f' % float(self.capital))        if self.stock_holdings != 0:            print('当前持股:%d 持股成本:%.2f\n' % (self.stock_holdings,float(self.costing)))            return True        else:            earn_temp = self.earn - self.pay            earn_rate = earn_temp/self.pay*100            print('本次交易盈亏:%.2f 本次交易盈利率:%.2f%%' % (earn_temp,earn_rate))            earn_temp = self.capital - self.base            earn_rate = earn_temp/self.base*100            print('总交易盈亏:%.2f 总交易盈利率:%.2f%%\n' % (earn_temp,earn_rate))            self.pay = 0            self.earn = 0            self.costing = 0            return True            def buy(self,price,quantity):        if price*quantity > self.capital:            print "资金不足，买入失败"            return False        else:            self.pay = self.pay + price*quantity + self.__buy_fee(price,quantity)            self.stock_holdings = self.stock_holdings + quantity            self.costing = (self.pay - self.earn)/self.stock_holdings            self.capital = self.capital - price*quantity - self.__buy_fee(price,quantity)            self.__show()            return True    def sell(self,price,quantity):        if quantity > self.stock_holdings:            print "卖出股份数量超过持有，卖出失败"            return False        else:            self.earn = self.earn + price*quantity - self.__sell_fee(price,quantity)            self.stock_holdings = self.stock_holdings - quantity            self.capital = self.capital + price*quantity - self.__sell_fee(price,quantity)            if self.stock_holdings != 0:                self.costing = 1.0*(self.pay - self.earn)/self.stock_holdings            self.__show()            return True    def share(self,quantity,dividend):        temp = self.stock_holdings        self.stock_holdings = temp + int(temp/10*quantity)        print self.pay        self.earn = self.earn + temp/10*dividend        print self.earn        self.costing = 1.0*(self.pay - self.earn)/self.stock_holdings        self.__show()        return Trues = stock()while True:    select = raw_input("输入当前操作：1.买入 2.卖出 3.送配\n")    if select=='1':        price = input('输入买入价格:')        print('当前可用资金:%.2f 可购买股份数:%d' % (s.capital,int(s.capital/price)))        quantity = input('输入购买股份数:')        s.buy(price,quantity)    elif select=='2':        print('当前持股成本:%.2f 可卖出股份数:%d' % (s.costing,s.stock_holdings))        price = input('输入卖出价格:')        quantity = input('输入卖出股份数:')        s.sell(price,quantity)    elif select=='3':        quantity = input('每10股送配股份数:')        dividend = input('每10股分红金额:')        s.share(quantity,dividend)    else:        break
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