Python loop for loop and simulation shopping cart Applet

For loop

For variable in range: code block ... contune #跳出本次循环接着执行下一次循环 for variable in range: code block ... break                    #跳出本层循环, go back to the previous for loop else: #其实for循环和while循环都有else子句, but the code block will be executed when the loop is fully executed ... Other main program code blocks ...

#作业1--jump out of layer three for follow Ring

for i in range (5):     print ("I---", i)     for j in range (5):         Print ("J---", j)         for k in range (5):             if k == 2:                 print ("K---", k)                  break         else:            continue         break    else:         continue ' Job 2-Shopping cart program customers can buy what they want based on their own salary, and the remaining amount will be calculated each time the purchase is completed ' 

Print ("----------welcome to oldboy market----------") print ("------today you can  Buy all of these:-------") Print ("--iphone<>computer<>coffee<>book<> clothes--") Shopping_car = []client_salary = int (Input (" please input your  Salary: ") while true:    items = [[' Iphone ',  5000], [' Computer ',  7999], [' Coffee ',  30], [' book ',  80], [' Clother ', 600]]     i = 1    enable_list = []                         #   What the user can buy     disable_list = []                        #  The user cannot buy something     cost_list = []                           #  price of goods to be purchased      name_list = []                           #  can buy the name of the product      print ("you can buy these:\n")     for item in  items:        if item[1] <= client_salary:             enable_list.append (item)              cost_list.append (item[1])              name_list.append (item[0])              print (i, item[0],  " ",  item[1])              i += 1        else:             disable_list.append (item)              continue    print ("q quit shopping")      print ("------------------------------------------------------")     print ("You can not buy these,because you don ' t have enough money!\n",  disable_list)     print ("------------------------------------------------------")     choice = input ("What ' s your choice number or quit:" )     if choice ==  ' q '  or choice ==  ' Q ':        &nBsp;print ("TODAY&NBSP;YOU&NBSP;HAVE&NBSP;BUY&NBSP;THESE&NBSP;:", Shopping_car)          break    else:        choice  = int (choice) -1        if choice <= len ( enable_list):             if cost_list[choice]  <= client_salary:                 shopping_car.append (Enable_list[choice])        # Add selected items to Cart                  client_salary = client_salary - cost_list[choice]                      print ("The "  ,enable_list[choice] , " is added to the shoppingcart  \nyour balance is ", Client_ Salary)                 print (" ------------------------------------------------------")                  print ("Have buy:", Shopping_car)                  print ("------------------------------------- -----------------")             else:                 print ("You don ' t  have enough money to buy this! ")                 continue         else:   &nBsp;        print ("Your choice is wrong,please try  again! ")             continue

Python loop for loop and simulation shopping cart Applet