通过python实现随机交换礼物程序详解

import random lsGiftIn = [['Jack','apple'],['June','ball'],['Mary','card'],['Duke','doll'],['James','egg'],['Tina','flute'],['Tom','coffee']]#存储参与者的姓名和自己带来的礼物lsGiftOut = []#存储交换后的结果n = len(lsGiftIn)#参与人数gifts = [i[1] for i in lsGiftIn]#未分配出去的礼物for x in range(n):  flag = 0  person = lsGiftIn[x][0]  myGift = lsGiftIn[x][1]  if myGift in gifts:    flag = 1    gifts.remove(myGift)  getGift = random.choice(gifts)#随机分配礼物  lsGiftOut.append([person,getGift])  gifts.remove(getGift)  if flag:    gifts.append(myGift) print(lsGiftOut)

dictGiftIn = {'Jack':'apple','Peter':'beer','Tom':'card','Duke':'doll','Mary':'pineapple','James':'flute','Tina':'coffee'}dictGiftOut = {}persons = list(dictGiftIn.keys())for p in persons:  flag = 0#标记自己带来的礼物是否还未分配出去  if p in dictGiftIn:    flag = 1    myGift = dictGiftIn.pop(p)#如果自己带来的礼物还未分配，则去掉该礼物  getGift = dictGiftIn.popitem()#随机返回并移除一对key-value值  dictGiftOut[p] = getGift[1]#得到的礼物  if flag:    dictGiftIn[p] = myGift#将自己的礼物添到未分配礼物中 print(dictGiftOut)#输出礼物分配情况