which Python ? asks beginner

[Dave]

Have given up Java. Want to switch to Python.  But _which_ ?
There is ver : 
     2.5  out now
     2.6  in beta , final expected Apr 2008
     3.0   ? in alpha or beta
     3.0 final expected Sep 2008 ?
Will the real python please stand up. 
  Thanks,  Dave WB3DWE     pdlemper at earthlink.net