Learn Python the hard way, ex40 字典，可爱的字典 

 1 #!/usr/bin/python
 2 #coding:utf-8
 3 cities ={'CA':'sf','MI':'dt','FL':'je'}  #创建字典
 4 cities['NY']='ny'    #增加新元素
 5 cities['OR']='pd'
 6 
 7 def find_city(themap,state):
 8     if state in themap:
 9         return themap[state]
10     else:
11         return 'not found'
12 
13 #ok pay attention
14 cities['_find'] =find_city
15 
16 while True:
17     print "State?(ENTER to quit)",
18     state = raw_input('>>')
19     if not state: break
20 
21     #this line is the most important ever!study!
22     city_found = cities['_find'](cities,state)
23     print city_found

Output

1 State?(ENTER to quit) >>CA
2 sf
3 State?(ENTER to quit) >>FL
4 je
5 State?(ENTER to quit) >>0
6 not found
7 State?(ENTER to quit) >>VT
8 not found
9 State?(ENTER to quit) >>

 

Python 字典(Dictionary)

posted on 2017-11-20 14:04  sub2020  阅读(165)  评论(0)  编辑  收藏  举报

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