substitution of list elements

Wolfram Kraus kraus at hagen-partner.de
Fri Jul 18 14:41:18 CEST 2008


Am 18.07.2008 14:33, antar2 schrieb:
> I want to replace each first element in list 5 that is equal to the
> first element of the list of lists4 by the fourth element. I wrote
> following code that does not work:
> 
> list4 = [['1', 'a', 'b', 'c'], ['2', 'd', 't', 'e'], ['8', 'g', 'q',
> 'f']]
> list5 = ['1', '2', '3']
> 
> for j in list4:
>   for k in list5:
   for i,k in enumerate(list5):

>     if j[0] == k:
> 	    k = j[3]
           list5[i] = j[3]

> print list5
> Wanted result: ['c', 'e', '3']
> 
> thanks!

You didn't replace the list element itself.

HTH,
Wolfram



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