AttributeError: 'RPCReply' object has no attribute 'data_ele'

[kovalov]

Hi,

I'm getting this error" AttributeError: 'RPCReply' object has no attribute 'data_ele'" when I try to run the below script

import lxml.etree as et

from argparse import ArgumentParser

from ncclient import manager

from ncclient.operations import RPCError

payload = [

'''

<get-config xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">

  <source>

    <running/>

  </source>

  <filter>

    <interfaces xmlns="urn:ietf:params:xml:ns:yang:ietf-interfaces">

      <interface>

        <name>GigabitEthernet1</name>

        <description/>

      </interface>

    </interfaces>

  </filter>

</get-config>

''',

]

# connect to netconf agent

with manager.connect(host="sandbox-iosxe-recomm-1.cisco.com",

                         port="830",

                         username="developer",

                         password="C1sco12345",

                         timeout=90,

                         hostkey_verify=False,

                         device_params={'name': 'csr'}) as m:

        # execute netconf operation

        for rpc in payload:

            try:

                response = m.dispatch(et.fromstring(rpc))

                data = response.data_ele

            except RPCError as e:

                data = e._raw

            # beautify output

            print(et.tostring(data, encoding='unicode', pretty_print=True))

[bigevilbeard]

@kovalov your code is good. I think your issue here is ncclient version. Looks like "data_ele" might have been completely removed in ncclient==0.6.12 according to the error. This script work with ncclient==0.6.4. It looked like the API guide is referring to response.xml instead of response.data_ele.

~/Desktop on  master [✘!?⇡] via  v3.6.5 (venv) took 2s
❯ pip freeze | grep ncc
ncclient==0.6.4
❯ python netconf_tester.py
<data xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0">
  <interfaces xmlns="urn:ietf:params:xml:ns:yang:ietf-interfaces">
    <interface>
      <name>GigabitEthernet1</name>
      <description>MANAGEMENT INTERFACE - DON'T TOUCH ME</description>
    </interface>
  </interfaces>
</data>

~/Desktop on  master [✘!?⇡] via  v3.8.0 (new_venv) took 3s
❯ pip freeze | grep ncc
ncclient==0.6.12
❯ python netconf_tester.py
Traceback (most recent call last):
  File "netconf_tester.py", line 38, in <module>
    data = response.data_ele
AttributeError: 'RPCReply' object has no attribute 'data_ele'

To save the downgrade, update this part

       for rpc in payload:
           try:
                response = m.dispatch(et.fromstring(rpc))
                data = response.xml
           except RPCError as e:
               data = e._raw

            # beautify output
        print(response.xml)

The function lxml.tostring converts lxml objects to strings and the response.data_ele were lxml objects. XML is always a string so you can just print(response.xml).

❯ python netconf_tester.py
<?xml version="1.0" encoding="UTF-8"?>
<rpc-reply xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="urn:uuid:4cf416e4-cb0c-4f96-8583-18e291f0e083" xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0"><data><interfaces xmlns="urn:ietf:params:xml:ns:yang:ietf-interfaces"><interface><name>GigabitEthernet1</name><description>MANAGEMENT INTERFACE - DON'T TOUCH ME</description></interface></interfaces></data></rpc-reply>