I have started to write a basic to fasm compiler in python (with macros I am stealing for windows and dex os) and would like to add a few python commands to my basic syntax so that it can compile itself and because I can't find what I want in shed skin.. I am looking pieces to emulate the following types of python code (as an example)..

infile = open('filename.txt','r')
outfile = open('outfile.txt','w')
for line in infile:
if 'asm' in line:
outfile.write(line)

here's an example I used to get the dim statements to compile

http://dexrow.blogspot.com/2009/01/flat-basic.html