copying a string???

[Fredrik Lundh]

Joe Connellan wrote:

> The string I pass to changeString() represents an 8 bit image for
> processing. The images I am processing are very large so it is more
> efficient for my function to change the pixel values of the input image
> rather than allocating enough memory for an output image to write into. I
> need to display before and after images once the processing is done - at
> the moment my before image changes with the after.
>
> If I shouldn't be changing the string, do you know of a better way of
> going about it? - I do need the image data to be stored as a string - for
> PIL and PyOpenGL reasons, and I can't afford to allocate memory for more
> than one image at a time.

if you're using PIL, you could of course modify the PIL image
memory instead:

    http://effbot.org/zone/pil-extending.htm

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