[Python-Dev] problem after installing python 3.2.2

[Vahid Ghaderi]

hi 
i have downloaded and installed python 3.2.2 but still when i use python in terminal it show's:
root at debian:~# python
Python 2.6.6 (r266:84292, Dec 27 2010, 00:02:40) 
[GCC 4.4.5] on linux2
Type "help", "copyright", "credits" or "license" for more information.
how can i change the default to python 3.2.2?
tHanks.
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