preinstalled python deleted (OSX 10.5+)

Hello everyone,

some months ago I made a very stupid thing: While installing yafary for the mac, I also installed python 2.6 because I thougth it was nessecary. Well, after noticing the failure I wanted to delete python 2.6 again. While doing that I mast have deleted the preinstalled python of OSX Leopard.

Is there a chance to get it back, maybe with reinstalling Leopard? Or is there another way to get the system back to normal?

Well, the system still wirks very well, but yafaray doesn´t work and the alpha and beta-Versions of blender 2.5 are lagging.

I hope you can help me in this stupid situation.