#!/usr/bin/python

import os

args = ""
walk = os.getcwd()
while argss != "quit":
    args = raw_input(""+walk+"> ")
    if args.split(" ")[0] == "cd":
         try:
              os.chdir(args.split(" ")[1])
              walk = os.getcwd()
         except:
              print "no such command"
    else:
        args2 = os.popen(args)
        print args2.read()

Spawning shell / command prompt based environment

Shell spawing command

Python