On Thu, Nov 17, 2011 at 6:09 PM, Christian Witts <cwi...@compuscan.co.za> wrote:
> On 2011/11/17 11:59 AM, lina wrote:
>
> list1
> [['61', '34', '61', '34'], ['61', '35', '61', '70', '61'], ['61',
> '70', '61', '34'], ['34', '58', '34', '58']]
>
> weight={}
> weight{list1[0]}=1
>
> SyntaxError: invalid syntax
>
> weight[list1[0]]=1
>
> Traceback (most recent call last):
> File "<pyshell#292>", line 1, in <module>
> weight[list1[0]]=1
> TypeError: unhashable type: 'list'
>
> I wonder how to count the occurence of the list of lists.
>
> Thanks, ^_^
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>
> sum(1 if type(elem) == list else 0 for elem in list1) not work for you if
> all you want to do is count how many lists you have in your main list ?
not count how many sublists in the main list.
wanna count the occurence of the sublists,
I mean, something like
>>> dictionary[list1[1]]=occurence
Traceback (most recent call last):
File "<pyshell#298>", line 1, in <module>
dictionary[list1[1]]=1
TypeError: unhashable type: 'list'
>>>
> --
>>>> dictionary[list1[1]]=1
Traceback (most recent call last):
File "<pyshell#298>", line 1, in <module>
dictionary[list1[1]]=1
TypeError: unhashable type: 'list'
>>>
> Christian Witts
> Python Developer
>
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