Question

我正试图把一个字符串转换成字典。示例：

Milk, Cheese, Bottle

程序将把它转换成字典。

{"Milk":"NULL", "Cheese":"NULL", "Bottle":"NULL"}

我该怎么做？

Answer 1

>>> string =  Milk, Cheese, Bottle 
>>> dict((key, None) for key in string.split( ,  ))
{ Cheese : None,  Milk : None,  Bottle : None}

Answer 2

>>> s = "Milk, Cheese, Bottle"
>>> d = dict.fromkeys(s.split( ,  ),"NULL")
>>> d
{ Cheese :  NULL ,  Milk :  NULL ,  Bottle :  NULL }

Answer 3

dict.fromkeys((k.strip() for k in "Milk, Cheese, Bottle".split( , )),  NULL )

Answer 4

s =  Milk, Cheese 
d = { }
for s in s.split( ,  ):
    d[s] =  NULL

您还可以在最新的Python版本中使用字典理解：

s =  Milk, Cheese 
d =  {key: NULL  for key in s.split( ,  )}

Answer 5

 >>> from collections import defaultdict:
 >>> s = "Milk, Cheese, Bottle"
 >>> j = s.split( , )
 >>> d = defaultdict()
 >>> for k in j:
     d[k]=  NULL 
 >>> dict(d)

Answer 6

这基本上与Zaur-Nasibov的解决方案相同，但使用列表理解在较少的行中运行for循环

s = "Milk, Cheese, Bottle"
d = dict((i, None) for i in [i.strip() for i in s.split( , )])

>>> print d
{ Cheese : None,  Milk : None,  Bottle : None}

希望这能有所帮助

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