iteration doesn't seem to work ??

[stef]

hello Sean,

thanks very much for the explanation and solution.

cheers,
Stef Mientki

half.italian at gmail.com wrote:
> On May 16, 1:41 am, stef <s.mien... at id.umcn.nl> wrote:
>   
>> hello,
>>
>> can someone tell me why the following iteration doesn't work,
>> and
>> how I should replace empty strings in a list with a default value.
>>
>>  >>> v
>> ['123', '345', '', '0.3']
>>  >>> for items in v:
>> ...       if items=='':
>> ...           items='3'
>> ...
>>  >>>
>>  >>> v
>> ['123', '345', '', '0.3']
>>  >>>
>>
>> thanks,
>> Stef Mientki
>>     
>
> Inside the loop, 'items' is no longer referencing the list...its a
> string.
>
>   
>>>> v = ['123', '4', '567', '']
>>>> for i in v:
>>>>         
> ...     print type(i)
> ...
> <type 'str'>...
>
> This works
>
>   
>>>> for j,i in enumerate(v):
>>>>         
> ...     if i=='':
> ...             v[j] = '3'
> ...
>   
>>>> v
>>>>         
> ['123', '4', '567', '3']
>   
>
> ~Sean
>
>