diff --git a/scripts/createUser.py b/scripts/createUser.py
index e3cac9f..d56c37b 100755
--- a/scripts/createUser.py
+++ b/scripts/createUser.py
@@ -1,103 +1,104 @@
 #!/usr/bin/python3
 # This program is free software: you can redistribute it and/or modify
 #     it under the terms of the GNU General Public License as published by
 #     the Free Software Foundation, either version 3 of the License, or
 #     (at your option) any later version.
 #
 #     This program is distributed in the hope that it will be useful,
 #     but WITHOUT ANY WARRANTY; without even the implied warranty of
 #     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 #     GNU General Public License for more details.
 #
 #     You should have received a copy of the GNU General Public License
 #     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 ################################################################
 # import getpass
 import os
 import stat
 import psycopg2
 import string
 import argparse
 import getpass
 import os
 ################################################################
 from random import randint, choice
 from psycopg2.extensions import ISOLATION_LEVEL_AUTOCOMMIT
 ################################################################
 
 
 def generatePassword():
     characters = string.ascii_letters + string.digits
     password = "".join(choice(characters) for x in range(randint(8, 16)))
     return password
 
 ################################################################
 
 
 def createUser(user, host):
     connection_params = dict()
     connection_params["user"] = user
 
     if host is not None:
         connection_params["host"] = host
 
     if host is None:
-        host = 'localhost'
+        connection_params["host"] = 'localhost'
     connection_params["password"] = getpass.getpass(
-        '{0}@{1} password: '.format(connection_params['user'], host))
+        f'{connection_params["user"]}@{host} password: ')
 
     try:
         connection = psycopg2.connect(**connection_params)
     except Exception as e:
+        print(connection_params)
         raise Exception(str(e)+'\n'+'*'*30 +
                         '\ncannot connect to database\n' + '*'*30)
 
     new_user = input('new login: ')
     connection.set_isolation_level(ISOLATION_LEVEL_AUTOCOMMIT)
 
     curs = connection.cursor()
     try:
         curs.execute('create user {0}'.format(new_user))
 
     except Exception as e:
         print(e)
 
     print('Setting new password')
     curs.execute('grant create on database blackdynamite to {0}'.format(
         new_user))
 
     password = generatePassword()
     curs.execute('alter role {0} with password \'{1}\' '.format(
         new_user, password))
 
     fname = '{0}.bd'.format(new_user)
     print('Saving information to {0}'.format(fname))
 
     try:
         os.remove(fname)
     except Exception:
         pass
     bdconf = open(fname, 'w')
-    bdconf.write('password = {0}\n'.format(password))
-    bdconf.write('host = {0}'.format(host))
+    bdconf.write(f'password = {password}\n')
+    bdconf.write(f'host = {connection_params["host"]}')
     bdconf.close()
     os.chmod(fname, stat.S_IREAD)
 
 ################################################################
 
 
 parser = argparse.ArgumentParser(
     description='User creation tool for blackdynamite')
 parser.add_argument("--user", type=str,
                     help="name of the admin user",
                     required=True)
 parser.add_argument("--host", type=str,
                     help="host to connect where to create the user",
                     default=None)
 args = parser.parse_args()
 args = vars(args)
 
 new_user = args['user']
 host = args['host']
 createUser(new_user, host)