如何简化程序PYTHON

我有一个任务，我必须做一个组合菜单。基本上我必须符合这些标准。 迭代1 向用户索要一种三明治(鸡肉5.25美元，牛肉6.25美元，豆腐5.75美元)。 让程序输出用户三明治选择，以帮助验证程序是否正确工作。 迭代2 将以下特性添加到第一次迭代中。 询问用户是否需要饮料(是，不是)。 如果他们说是，问他们想要多大的饮料: 小:$ 1.00 介质:$ 1.75 大:2.25美元 有程序输出用户饮料大小选择，或缺少选择，以帮助验证程序是否正确工作。 让程序输出到目前为止的总成本。 我刚接触Python，我真的不知道如何简单地使用这个程序。

if sandwich=='Chicken':
    print "Okay! So a chicken sandwich, your total cost is $5.25"
if sandwich=='Beef':
    print 'Okay! So a beef sandwich, your total cost is $6.25'
if sandwich=='Tofu':
    print 'Okay! So a tofu sandwich, your total cost is $5.75'


beverage= raw_input("Would you like a beverage? Yes or No? ")
if beverage=='Yes':
    size_beverage= raw_input("What size? Small, Medium, or Large? ")


    if size_beverage=='Small': 
        if sandwich=='Chicken':
            print 'Your total is $6.25'
            print 'Okay! so a', sandwich,'sandwich and a small beverage'
        if sandwich=='Beef':
            print 'Your total is $7.25'
            print 'Okay! so a',sandwich,'sandwich and a small beverage'
        if sandwich=='Tofu':
            print 'Your total is $6.75'
            print 'Okay! so a', sandwich,'sandwich and a small beverage'

    if size_beverage=='Medium': 
        if sandwich=='Chicken':
            print 'Your total is $7'
            print 'Okay! so a', sandwich,'sandwich and a medium beverage'
        if sandwich=='Beef':
            print 'Your total is $8'
            print 'Okay! so a',sandwich,'sandwich and a medium beverage'
        if sandwich=='Tofu':
            print 'Your total is $7.50'
            print 'Okay! so a', sandwich,'sandwich and a medium beverage'

    if size_beverage=='Large':
        if sandwich=='Chicken':
            print 'Your total is $7.50'
            print 'Okay! so a', sandwich,'sandwich and a large beverage'
        if sandwich=='Beef':
            print 'Your total is $8.50'
            print 'Okay! so a',sandwich,'sandwich and a large beverage'
        if sandwich=='Tofu':
            print 'Your total is $8'
            print 'Okay! so a', sandwich,'sandwich and a large beverage'

if beverage=='No':
    print 'Okay! so just a', sandwich,"sandwich?"```

问题来源StackOverflow 地址：/questions/59383978/how-to-simplify-program-python