replace string patern with different value

[ajikoe at gmail.com]

Hello,

I would like to replace string with different values,
For example :
source = 'kode1 bla bla kode1 bla kode1'
I have a list with each member will replace each of kode1.
L = [11,22,33]
So the new source will become:
newsource = '11 bla bla 22 bla 33'

How can I do it ? I tried to find using string built in function
replace, but it will replace pattern with the same value.

For this moment I think about change the string into list using
string.split and then check one by one and replace it and then convert
into string with addition space in the right and left of each element
list.

Is there any better idea ?

Pujo