The fifth day, the fourth day to review the contents of the shopping cart applet job. Tuple

#__author__: Zoe 
#date: 2019/5/31 
salary = int (the INPUT ( "Welcome! Please enter your budget:")) 
Print ( '1 iphone6s.', '\ t', '5800', ' \ n-' 
      ' 2. MAC Book ',' \ T ',' 9000 ',' \ n-' 
      ' 3. Coffee ',' \ T \ T ',' 32 ',' \ n-' 
      ' Python 4. Book ' , '', '80', '\ n-' 
      '5. The Bicycle', '\ T \ T', '1500', End = '\ n-') 
Goods = [ '0', 'ipone6s',' MAC Book ',' Coffee ',' Python Book ',' Bicycle '] 
. price = [' 0 ',' 5800 ',' 9000 ',' 32 ',' 80 ',' 1500 '] 
Shopping_cart = List () 
rest_cash = int (the salary) 
quit_flag = True 
the while quit_flag: 
    Choice = INPUT ( 'Please select or exit by q:') 
    IF Choice == 'q': 
        quit_flag = False 
        Continue 
    IF rest_cash - int ( price [int (choice)]) <0:
        print ( 'insufficient funds, need to re-select.', - (rest_cash - int (. price [int (Choice)]))) 
        Continue 
    rest_cash - = int (. price [int (Choice)]) 
    shopping_cart.append (Goods [ int (Choice)]) 
    Print (Goods [int (Choice)], 'has been added to your shopping cart, the current balance:', rest_cash) 
the else: 
    Print ( 'Welcome to the next visit, you have purchased:', shopping_cart, ' total cost: ', salary - rest_cash) 

tuples Like lists 
a = (1,2,3,4,5) 
can sliced values, a tuple can not modify the contents inside. 

cart program can continue to optimize.