def remove_namespaces(xml):
        for elem in xml.getiterator():
            split_tag = elem.tag.split('}')
            if len(split_tag) > 1:
                elem.tag = split_tag[1]
        return xml

 with manager.connect(host=host, port=port, username=user, password=pwd,
                      hostkey_verify=False, device_params={'name': 'nexus'},
                      allow_agent=False, look_for_keys=False) as device:

        get_filter = """
                      <show>
                        <version>
                        </version>
                      </show>
                      """
       nc_get_reply = device.get(('subtree', get_filter))
       nc_get_reply_no_ns = remove_namespaces(nc_get_reply.data_ele)
       xml_rsp = nc_get_reply_no_ns.find('.//kickstart_ver_str')
       value = xml_rsp.text
       print value