python-ldap with bind user for django

ldap_bind_u.py

import ldap
from django.conf import settings
ldap_auth = settings.LDAP_AUTH[0]

ldap_uri = ldap_auth['uri']
l_user = ldap_auth['bind_user']
l_pass = ldap_auth['bind_password']

searchScope = ldap_auth['scope']
base = ldap_auth['base']

def get_dn(uname, dn=None):
    base = ldap_auth['base']
    l = ldap.initialize(ldap_uri)
    bind_user = ldap_auth['bind_user']
    bind_pass = ldap_auth['bind_password']
    l.simple_bind(bind_user, bind_pass)
    try:
        uid = ldap_auth['dn']
        nic = l.search_s(base, 1, 'uid=%s' % uname, [uid])[0][1].get(ldap_auth.get('dn', 'dn'))[0]
        dn = '%s=%s,%s' % (uid, nic, 'ou=people,dc=temple,dc=edu')
    except ldap.LDAPERROR as e:
        print(e)

    return dn

def user_bind(username, password):
    l = ldap.initialize(ldap_uri)
    l.protocol_version = 3
    l.set_option(ldap.OPT_REFERRALS, 0)
    l_response = l.simple_bind(get_dn(username), password)
    bind_result = l.result(l_response)

    if bind_result[0] == 97:
        return True
    else:
        return False