Parsing a setup file

[Tommy Grav]

Hi,

   I have a setup file for some numerical simulation code written in  
C that looks like this:

dt 0.1
time 0.0
nupdate 10
noutput 100
ntotal 10000
G 39.476926421373015
Sun 1.00000597682
mplanet 9.547861040430418e-4
3.409530427945 3.635870038323 .03424028779975
-2.0471057839802485 2.0178211484578044 -9.730193916219667e-4
mplanet 2.8558373315055975e-4
6.612079829705 6.386934883415 -.1361443021015
-1.5268292602445992 1.4623064051166743 6.108354829704997e-3
mplanet 4.372731645458918e-5
11.16769742623 16.04343604329 .3617849409933
-1.1927379555398092 .7563317049955387 -7.950313544811802e-3
particle
5.0  0.2  10.5
0.0  0.0  10.0
particle
6.0 0.1    5.5
0.0 180.0 -10.0

there can be any number of mplanet and particle enteries in the the  
file.
As I am working on porting this code to python I am trying to figure out
an efficient way of parsing such data into the program. I have the  
freedom
to play around with the setup file(s) which is nice. I have played  
around with
cfgparse, which I like, and made a file like this

[DEFAULT]
dt = 0.1
time = 0.0

and so on, but that does not give me a good way of parsing in the  
list of
mplanets and particles. I can write my own little parser to handle a  
file
that contains only the mplanets or particles, but I am wondering if  
there are
any parsers out there that will handle this type of data? Or is there a
way to organize my setup file that would simplify the input that I am  
missing?

Cheers
   Tommy