#!/usr/bin/python3

import os
import subprocess
import sys

filename = "users.txt"

try:
    fh = open(filename, "r")
except:
    print ("Fichier ", filename, " inconnu")
else:
    line = fh.readline ()
    while line:
        # use realine() to read next line
        maligne = line.rstrip()
        (login, name) = maligne.split(":")
        uncmds = ["userdel", "-r", login ]
        res = subprocess.run(uncmds,stdout=subprocess.PIPE)
        line = fh.readline()
    fh.close()