Python-字典多路分支

>>> choice='ham'
>>> prices={}
>>> prices['spam']=1.25
>>> prices['ham']=1.99
>>> prices['eggs']=0.99
>>> prices['bacon']=1.10
>>> prices
{'spam': 1.25, 'ham': 1.99, 'eggs': 0.99, 'bacon': 1.1}
>>> print(prices[choice])
1.99
>>>