python实现给字典添加条目的方法

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Release: 2016-06-16 08:41:44
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本文实例讲述了python实现给字典添加条目的方法,是针对字典操作中比较实用的技巧。分享给大家供大家参考。

具体实现方法如下:

def addWord(theIndex,word,pagenumber): 
  theIndex.setdefault(word, [ ]).append(pagenumber)#存在就在基础上加入列表,不存在就新建个字典key 
 
d = {"hello":[3]} 
#d = {} 
addWord(d,"hello",3) 
addWord(d,"hello",56) 
addWord(d,"nihao",24) 
print d 

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本文测试环境为Python2.7.6

程序运行结果如下:

{'nihao': [24], 'hello': [3, 3, 56]}

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希望本文所述对大家Python程序设计的学习有所帮助。

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