将exec与已与变量放在一起的列表一起使用

Question

我用过

current_pizza_list = ('pizza_' + str(current_pizza) + '[1]')

生成列表名称和位置。但我想在输入中使用此列表

pizza_ammount = input('How many', exec(current_pizza_list) ,' pizzas would you like:')

这不起作用，我不是100％确定exec函数的工作原理。 任何帮助都会很棒。

pizza_1 = ['8.00','Pepperoni']
pizza_2 = ['8.00','Hawaiian']
pizza_3 = ['8.00','Meat Lovers']
pizza_4 = ['8.00','Classic Cheese']

while True:
    print('What sort of pizza would you like')
    print('Input 1 for ' , pizza_1[1],' , $',pizza_1[0])
    print('Input 2 for ' , pizza_2[1],' , $',pizza_2[0])
    print('Input 3 for ' , pizza_3[1],' , $',pizza_3[0])
    print('Input 4 for ' , pizza_4[1],' , $',pizza_4[0])
    current_pizza = input('What pizza would you like:')
    current_pizza_list = ('pizza_' + str(current_pizza) + '[1]')
    pizza_ammount = input('How many', exec(current_pizza_list) ,' pizzas would you like:')
    break