Python from getting started to discarding-day05-formatted output shopping cart

#Author: liuxing#Date: 2017-12-25#Shopping Jobsmy_money=10000my_commodity=[]commoditys=[("iphone", 4500), ("MacBook", 8000), (" Book", 90), ("Bicyle", 1200), ("PC", 3000), ("Coffee", 20)] whileTrue:Print("Current Balance =%d"%My_money)Print("Product Information")     forCommodityinchCommoditys:Print("%d.%s%d Yuan"% (Commoditys.index (commodity) +1,commodity[0],commodity[1]), end=" ")    Print() Choice=int (Input (">>>:"))    ifChoice==-1:         Break    Else:        ifCommoditys[choice-1][1]>My_money:Print("insufficient balance, please re-select! ")            Continue        Else:            ifCOMMODITYS[CHOICE-1]inchMy_commodity:index=my_commodity.index (commoditys[choice-1]) My_commodity[index+1]+=1My_money-=commoditys[choice-1][1]            Else: My_commodity.append (Commoditys[choice-1]) My_commodity.append (1) My_money-= Commoditys[choice-1][1]Print(my_commodity)

Current Balance =10000Product Information1.iphone 4500 Yuan 2.macbook 8000 Yuan 3.book 90 Yuan 4.bicyle 1200 Yuan 5.pc 3000 Yuan 6. Coffee 20 USD>>>:1Current Balance=5500Product Information1.iphone 4500 Yuan 2.macbook 8000 Yuan 3.book 90 Yuan 4.bicyle 1200 Yuan 5.pc 3000 Yuan 6. Coffee 20 USD>>>:1Current Balance=1000Product Information1.iphone 4500 Yuan 2.macbook 8000 Yuan 3.book 90 Yuan 4.bicyle 1200 Yuan 5.pc 3000 Yuan 6. Coffee 20 USD>>>:3Current Balance=910Product Information1.iphone 4500 Yuan 2.macbook 8000 Yuan 3.book 90 Yuan 4.bicyle 1200 Yuan 5.pc 3000 Yuan 6. Coffee 20 USD>>>:3Current Balance=820Product Information1.iphone 4500 Yuan 2.macbook 8000 Yuan 3.book 90 Yuan 4.bicyle 1200 Yuan 5.pc 3000 Yuan 6. Coffee 20 USD>>>:3Current Balance=730Product Information1.iphone 4500 Yuan 2.macbook 8000 Yuan 3.book 90 Yuan 4.bicyle 1200 Yuan 5.pc 3000 Yuan 6. Coffee 20 USD>>>:-1[('iphone', 4500), 2, (' Book', 90), 3]

Python from getting started to discarding-day05-formatted output shopping cart