last line chopped from input file

[Eric Lavigne]

>A shorter python program would be:
>
>   os.command("debug\\curve-fit <input.txt >output.txt")

I tried this program:
  import os
  os.command("debug\\curve-fit <input.txt >output.txt")

My error message is:
  AttributeError: 'module' object has no attribute 'command'

I also could not find os.command in the help files. My Python version
is 2.4 (latest is 2.4.1, just a bug-fix release).