import subprocess

# Read the File containing list of commands
fhr = open("sample_file",'r')

# SHELL FOR EXECUTING BUILD COMMANDS
    SHELL_CMD = "cmd.exe"
    shellproc = subprocess.Popen(SHELL_CMD,shell=True,stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
    expected = '<$$$>\r\n'
    prompt_cmd = 'prompt $L$$$$$$$G$_'
    shellproc.stdin.write('%s\n' % prompt_cmd)

# Read the file line by line
for line in fhr:
    ##
    ## SET of Statements to replace all the tokens
    cmd = <## processed line##>
   
    shellproc.stdin.write('%s\n' % cmd)

    while True:
        output = shellproc.stdout.readline()
        if output.endswith(expected): break
        logger.info(output)

print "Waiting for subshell to terminate"
shellproc.stdin.write("exit\n")
shellproc.wait()
print "Successfully Executed all the Commands           [Done]"