How do I execute another program within a python program?

**Kevin Aziz** · Oct 16 '10, 04:10 PM

I'm very new to python (about two days experience) and have made a few basic programs so far. Now I want to try to make a program in which the user will input a file name and the file will execute, but I haven't been able to find the last piece I need.

So far I have a basic:

Code:

print "Enter program name.\nFor a list of programs type 'List'" #intro text
program = raw_input("Program: ") #asks user for program
while program == "List": #lists program names
    print "Collatz.py"
    #the program list continues with a few more names
    program = raw_input("Program: ") #asks for new input

I have tried maybe 50 different ways to get the program inputted to function but I can't seem to make it work.