Theres a script called reindent.py thats sometimes included in your system's python distribution which will go through and re-indent all your code to the recommended 4 spaces indenting.
Heres a copy of it in case you can't find it in your distribution: http://www.koders.com/python/fid24D30FCD2CE388C67CB980EF55630D25970CFB96.aspx?s=cdef%3Aparser
