How to modify a string in place?

[Andreas Jung]

On Fri, May 14, 1999 at 11:16:12AM -0500, John Powers wrote:
> I have read a large binary image of a program into a Python string and need
> to patch hundreds of places in the string to reflect relocated addresses.
> Since strings are immutable, I wind up cutting the string apart (beforehole
> = image[:hole]; afterhole = image[hole+4:]) then reconstructing the image
> (image = beforehole + reloc + afterhole). This is extremely slow!
> 
> I would like to modify the string in place. Any ideas?
> 

Maybe you should try:

1) convert the string to a list (lst = list(mystr)). Because lists
  are mutable you can change the elements of the lists with the
  known list functions.

2) take look at the array module.

Cheers,
Andreas

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