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Re: pythonic way

 
 
Chris Angelico
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      11-02-2012
On Fri, Nov 2, 2012 at 7:58 PM, jack <(E-Mail Removed)> wrote:
> thanks,but I don't think enumerate() is my want
> Have some ways to operate the reference of element,not a copy when I tried
> to traverse a list?
>
> I'm so sorry about my poor English, hope you don't mind it.


No probs, I'll be a little less vague and pointer-y and give you some
example code.

lst = ['foo', 'bar', 'quux', 'asdf', 'qwer', 'zxcv']
for idx, val in enumerate(lst):
if val[1]=='w': lst[idx]='Replaced'
print(lst)

['foo', 'bar', 'quux', 'asdf', 'Replaced', 'zxcv']


Does that explain it a bit better? You get the index and can then
mutate the list using that index, thus replacing the original entry.

ChrisA
 
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