#
# Get running config from an IOS-XR device and print out some
# interface information. Shows how to use the jxmlease library
# for when you'd rather have JSON but have to deal with XML!
#
from ncclient import manager
import jxmlease

HOST = '127.0.0.1'
PORT = 8303
USER = 'cisco'
PASS = 'cisco'

def my_unknown_host_cb(host, fingerprint):
    return True

m = manager.connect(host=HOST, port=PORT, username=USER, password=PASS,
                    timeout=600,
                    allow_agent=False,
                    look_for_keys=False,
                    hostkey_verify=False,
                    unknown_host_cb=my_unknown_host_cb)

c = m.get_config(source='running')
r = jxmlease.parse(c.data_xml)

for intf in r[u'data'][u'interface-configurations'][u'interface-configuration']:
    if 'ipv4-network' in intf.keys():
        print("{} has IPv4 address {}".format(
                intf[u'interface-name'],
                intf[u'ipv4-network'][u'addresses'][u'primary'][u'address']))
    else:
        print("{} has no IPv4 network config".format(intf[u'interface-name']))