get_hostname.py

#!/usr/bin/python

# import the ncclient library
from ncclient import manager
import sys
import xml.dom.minidom


# the variables below assume the user is leveraging the
# network programmability lab and accessing csr1000v
# use the IP address or hostname of your CSR1000V device
HOST = '198.18.133.218'
# use the NETCONF port for your CSR1000V device
PORT = 2022
# use the user credentials for your CSR1000V device
USER = 'admin'
PASS = 'C1sco12345'

# create a main() method
def main():
    """Main method that retrieves the hostname from config via NETCONF."""
    with manager.connect(host=HOST, port=PORT, username=USER, password=PASS,
                         hostkey_verify=False, device_params={'name': 'default'},
                         allow_agent=False, look_for_keys=False) as m:

        # XML filter to issue with the get operation
        hostname_filter = '''
                          <filter>
                              <native xmlns="urn:ios">
                                  <hostname></hostname>
                              </native>
                          </filter>
                          '''
        result = m.get_config('running', hostname_filter)
        xml_doc = xml.dom.minidom.parseString(result.xml)
        hostname = xml_doc.getElementsByTagName("hostname")
        print(hostname[0].firstChild.nodeValue)


if __name__ == '__main__':
    sys.exit(main())