convert non-delimited to delimited

[RyanL]

I'm a newbie!  I have a non-delimited data file that I'd like to
convert to delimited.

Example...
Line in non-delimited file:
0139725635999992000010100534+42050-102800FM-15+1198KAIA

Should be:
0139,725635,99999,2000,01,01,00,53,4,+42050,-102800,FM-15,+1198,KAIA

What is the best way to go about this?  I've looked all over for
examples, help, suggestions, but have not found much.  CSV module
doesn't seem to do exactly what I want.  Maybe I'm just missing
something or not using the correct terminology in my searches.  Any
assistance is greatly appreaciated!  Using Python 2.4