diff --git a/sio2/SISR/07-python/creatusr/creatusr.py b/sio2/SISR/07-python/creatusr/creatusr.py
index 471ba85..88e1d2a 100644
--- a/sio2/SISR/07-python/creatusr/creatusr.py
+++ b/sio2/SISR/07-python/creatusr/creatusr.py
@@ -1,10 +1,32 @@
 #!/usr/bin/python3
 
-try:
-   fh = open("users.txt", "r")
-except:
-   print("Fichier inconnu")
-else:
-   line = fh.readline()
-   while line:
+import sys
+import subprocess
 
+def create_user(login, nomcomplet):
+   cmds = ["useradd", "-m", "-c", nomcomplet, "-s", "/bin/bash", login]
+   res = subprocess.run(cmds,stdout=subprocess.PIPE)
+   print ("createusr : utilisateur ", login, " cree")
+
+if  len(sys.argv) != 2 :
+	print ("usage : ", sys.argv[0], " <fichier>")
+	exit (1)
+
+fichier =  sys.argv[1]
+try:
+    fh = open(fichier, "r")
+except:
+    print (sys.argv[0], "erreur ouverture fichier ", fichier)
+    exit (2)
+else:
+    line = fh.readline ()
+    while line:
+        line = line.rstrip()
+#        print (line)
+        login,nomcomplet=line.split(':')
+        print(login," ", nomcomplet)
+        # use realine() to read next line
+        create_user(login, nomcomplet)
+        line = fh.readline ()
+    fh.close()
+    exit (0)