name: docs run_id: commands[0] env LANG: en_US.UTF-8 env HOME: /home/jenkins env PATH: /w/workspace/integration-test-tox-verify-master/.tox/docs/bin:/opt/pyenv/bin:/tmp/venv-0u1Q/bin:/opt/pyenv/shims:/home/jenkins/.local/bin:/home/jenkins/bin:/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/opt/puppetlabs/bin env PYTHONHASHSEED: 26286717 env PIP_DISABLE_PIP_VERSION_CHECK: 1 env PYTHONIOENCODING: utf-8 env TOX_ENV_NAME: docs env TOX_WORK_DIR: /w/workspace/integration-test-tox-verify-master/.tox env TOX_ENV_DIR: /w/workspace/integration-test-tox-verify-master/.tox/docs env VIRTUAL_ENV: /w/workspace/integration-test-tox-verify-master/.tox/docs metadata pid: 6944 cwd: /w/workspace/integration-test-tox-verify-master allow: /w/workspace/integration-test-tox-verify-master/.tox/docs/bin/* cmd: sphinx-build -W -n -b html -d /w/workspace/integration-test-tox-verify-master/.tox/docs/tmp/doctrees ./docs/ /w/workspace/integration-test-tox-verify-master/docs/_build/html exit_code: 0 Running Sphinx v8.1.3 /w/workspace/integration-test-tox-verify-master/csit/libraries /w/workspace/integration-test-tox-verify-master/docs /w/workspace/integration-test-tox-verify-master/docs/_static/integration/robot /w/workspace/integration-test-tox-verify-master/csit/libraries /w/workspace/integration-test-tox-verify-master/docs /w/workspace/integration-test-tox-verify-master/csit/libraries /w/workspace/integration-test-tox-verify-master/docs /w/workspace/integration-test-tox-verify-master/docs/_build/robot /w/workspace/integration-test-tox-verify-master/csit/libraries /w/workspace/integration-test-tox-verify-master/docs /w/workspace/integration-test-tox-verify-master/csit/libraries /w/workspace/integration-test-tox-verify-master/docs /w/workspace/integration-test-tox-verify-master/docs/_build/robot/AAAJsonUtils.py.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/AAAKeywords.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/AuthStandalone.py.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/BGPCEP/ipaddr.py.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/BGPSpeaker.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/BGPcliKeywords.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/Appenders/ElasticsearchAppender.py.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/BulkomaticKeywords.robot.html Library 'BgpRpcClient' expected 1 to 2 arguments, got 0. Try --help for usage information. /w/workspace/integration-test-tox-verify-master/docs/_build/robot/BgpOperations.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/CarPeople.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/ChangeCounter.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/CheckJVMResource.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/ClusterAdmin.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/ClusterEntities.py.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/ClusterOpenFlow.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/ClusterOvsdb.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/ClusterManagement.robot.html Importing library '/w/workspace/integration-test-tox-verify-master/csit/libraries/ClusterStateLibrary.py' failed: ModuleNotFoundError: No module named 'SSHLibrary' Traceback (most recent call last): File "/w/workspace/integration-test-tox-verify-master/csit/libraries/ClusterStateLibrary.py", line 3, in import UtilLibrary File "/w/workspace/integration-test-tox-verify-master/csit/libraries/UtilLibrary.py", line 2, in from SSHLibrary import SSHLibrary PYTHONPATH: /w/workspace/integration-test-tox-verify-master/csit/libraries /w/workspace/integration-test-tox-verify-master/csit/libraries /opt/pyenv/versions/3.11.7/lib/python311.zip /opt/pyenv/versions/3.11.7/lib/python3.11 /opt/pyenv/versions/3.11.7/lib/python3.11/lib-dynload /w/workspace/integration-test-tox-verify-master/.tox/docs/lib/python3.11/site-packages Try --help for usage information. /w/workspace/integration-test-tox-verify-master/docs/_build/robot/Common.py.html Importing library '/w/workspace/integration-test-tox-verify-master/csit/libraries/ConfGen.py' failed: ModuleNotFoundError: No module named 'pyhocon' Traceback (most recent call last): File "/w/workspace/integration-test-tox-verify-master/csit/libraries/ConfGen.py", line 9, in import pyhocon PYTHONPATH: /w/workspace/integration-test-tox-verify-master/csit/libraries /w/workspace/integration-test-tox-verify-master/csit/libraries /opt/pyenv/versions/3.11.7/lib/python311.zip /opt/pyenv/versions/3.11.7/lib/python3.11 /opt/pyenv/versions/3.11.7/lib/python3.11/lib-dynload /w/workspace/integration-test-tox-verify-master/.tox/docs/lib/python3.11/site-packages Try --help for usage information. /w/workspace/integration-test-tox-verify-master/docs/_build/robot/CompareStream.robot.html Importing library '/w/workspace/integration-test-tox-verify-master/csit/libraries/Counter.py' failed: ImportError: cannot import name 'ifilter' from 'itertools' (unknown location) Traceback (most recent call last): File "/w/workspace/integration-test-tox-verify-master/csit/libraries/Counter.py", line 3, in from itertools import repeat, ifilter PYTHONPATH: /w/workspace/integration-test-tox-verify-master/csit/libraries /w/workspace/integration-test-tox-verify-master/csit/libraries /opt/pyenv/versions/3.11.7/lib/python311.zip /opt/pyenv/versions/3.11.7/lib/python3.11 /opt/pyenv/versions/3.11.7/lib/python3.11/lib-dynload /w/workspace/integration-test-tox-verify-master/.tox/docs/lib/python3.11/site-packages Try --help for usage information. Importing library '/w/workspace/integration-test-tox-verify-master/csit/libraries/CrudLibrary.py' failed: ModuleNotFoundError: No module named 'SSHLibrary' Traceback (most recent call last): File "/w/workspace/integration-test-tox-verify-master/csit/libraries/CrudLibrary.py", line 2, in import UtilLibrary File "/w/workspace/integration-test-tox-verify-master/csit/libraries/UtilLibrary.py", line 2, in from SSHLibrary import SSHLibrary PYTHONPATH: /w/workspace/integration-test-tox-verify-master/csit/libraries /w/workspace/integration-test-tox-verify-master/csit/libraries /opt/pyenv/versions/3.11.7/lib/python311.zip /opt/pyenv/versions/3.11.7/lib/python3.11 /opt/pyenv/versions/3.11.7/lib/python3.11/lib-dynload /w/workspace/integration-test-tox-verify-master/.tox/docs/lib/python3.11/site-packages Try --help for usage information. /w/workspace/integration-test-tox-verify-master/docs/_build/robot/DataModels.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/DaeximKeywords.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/DatastoreCRUD.robot.html Importing library '/w/workspace/integration-test-tox-verify-master/csit/libraries/Docker.py' failed: ModuleNotFoundError: No module named 'docker' Traceback (most recent call last): File "/w/workspace/integration-test-tox-verify-master/csit/libraries/Docker.py", line 13, in import docker PYTHONPATH: /w/workspace/integration-test-tox-verify-master/csit/libraries /w/workspace/integration-test-tox-verify-master/csit/libraries /opt/pyenv/versions/3.11.7/lib/python311.zip /opt/pyenv/versions/3.11.7/lib/python3.11 /opt/pyenv/versions/3.11.7/lib/python3.11/lib-dynload /w/workspace/integration-test-tox-verify-master/.tox/docs/lib/python3.11/site-packages Try --help for usage information. Importing library '/w/workspace/integration-test-tox-verify-master/csit/libraries/DynamicMininet.py' failed: ModuleNotFoundError: No module named 'mininet' Traceback (most recent call last): File "/w/workspace/integration-test-tox-verify-master/csit/libraries/DynamicMininet.py", line 10, in import mininet.node PYTHONPATH: /w/workspace/integration-test-tox-verify-master/csit/libraries /w/workspace/integration-test-tox-verify-master/csit/libraries /opt/pyenv/versions/3.11.7/lib/python311.zip /opt/pyenv/versions/3.11.7/lib/python3.11 /opt/pyenv/versions/3.11.7/lib/python3.11/lib-dynload /w/workspace/integration-test-tox-verify-master/.tox/docs/lib/python3.11/site-packages Try --help for usage information. /w/workspace/integration-test-tox-verify-master/docs/_build/robot/ExaBgpLib.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/FailFast.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/FlowLib.py.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/GoBgpLib.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/FlowLib.robot.html Importing library '/w/workspace/integration-test-tox-verify-master/csit/libraries/JsonGenerator.py' failed: ModuleNotFoundError: No module named 'pyangbind' Traceback (most recent call last): File "/w/workspace/integration-test-tox-verify-master/csit/libraries/JsonGenerator.py", line 2, in import pyangbind.lib.pybindJSON as pbJ PYTHONPATH: /w/workspace/integration-test-tox-verify-master/csit/libraries /w/workspace/integration-test-tox-verify-master/csit/libraries /opt/pyenv/versions/3.11.7/lib/python311.zip /opt/pyenv/versions/3.11.7/lib/python3.11 /opt/pyenv/versions/3.11.7/lib/python3.11/lib-dynload /w/workspace/integration-test-tox-verify-master/.tox/docs/lib/python3.11/site-packages Try --help for usage information. /w/workspace/integration-test-tox-verify-master/docs/_build/robot/JsonrpcKeywords.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/KarafKeywords.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/KillPythonTool.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/LISPFlowMapping.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/LISPFlowMapping__Lithium.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/MdsalLowlevel.robot.html Importing library '/w/workspace/integration-test-tox-verify-master/csit/libraries/MininetTopo/create_fullymesh.py' failed: ModuleNotFoundError: No module named 'netaddr' Traceback (most recent call last): File "/w/workspace/integration-test-tox-verify-master/csit/libraries/MininetTopo/create_fullymesh.py", line 4, in import netaddr PYTHONPATH: /w/workspace/integration-test-tox-verify-master/csit/libraries/MininetTopo /w/workspace/integration-test-tox-verify-master/csit/libraries /opt/pyenv/versions/3.11.7/lib/python311.zip /opt/pyenv/versions/3.11.7/lib/python3.11 /opt/pyenv/versions/3.11.7/lib/python3.11/lib-dynload /w/workspace/integration-test-tox-verify-master/.tox/docs/lib/python3.11/site-packages Try --help for usage information. /w/workspace/integration-test-tox-verify-master/docs/_build/robot/MdsalLowlevelPy.py.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/MininetKeywords.robot.html Importing library '/w/workspace/integration-test-tox-verify-master/csit/libraries/MininetTopo/topo-3sw-2host_multipath.py' failed: ModuleNotFoundError: No module named 'mininet' Traceback (most recent call last): File "/w/workspace/integration-test-tox-verify-master/csit/libraries/MininetTopo/topo-3sw-2host_multipath.py", line 11, in from mininet.topo import Topo PYTHONPATH: /w/workspace/integration-test-tox-verify-master/csit/libraries/MininetTopo /w/workspace/integration-test-tox-verify-master/csit/libraries /opt/pyenv/versions/3.11.7/lib/python311.zip /opt/pyenv/versions/3.11.7/lib/python3.11 /opt/pyenv/versions/3.11.7/lib/python3.11/lib-dynload /w/workspace/integration-test-tox-verify-master/.tox/docs/lib/python3.11/site-packages Try --help for usage information. /w/workspace/integration-test-tox-verify-master/docs/_build/robot/NetconfCallHome.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/NetconfKeywords.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/NettyReplication.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/NexusKeywords.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/ODLTools.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/OVSDB.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/OvsManager.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/PcepOperations.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/PrefixCounting.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/RemoteBash.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/RestPerfClient.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/Restconf.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/ScalarClosures.robot.html Importing library '/w/workspace/integration-test-tox-verify-master/csit/libraries/ScaleClient.py' failed: ModuleNotFoundError: No module named 'netaddr' Traceback (most recent call last): File "/w/workspace/integration-test-tox-verify-master/csit/libraries/ScaleClient.py", line 11, in import netaddr PYTHONPATH: /w/workspace/integration-test-tox-verify-master/csit/libraries /w/workspace/integration-test-tox-verify-master/csit/libraries /opt/pyenv/versions/3.11.7/lib/python311.zip /opt/pyenv/versions/3.11.7/lib/python3.11 /opt/pyenv/versions/3.11.7/lib/python3.11/lib-dynload /w/workspace/integration-test-tox-verify-master/.tox/docs/lib/python3.11/site-packages Try --help for usage information. /w/workspace/integration-test-tox-verify-master/docs/_build/robot/SSHKeywords.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/SettingsLibrary.py.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/SetupUtils.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/ShardStability.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/SubStrings.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/SwitchClasses/BaseSwitch.py.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/SwitchClasses/H3C.py.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/SwitchClasses/H3C_5920.py.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/SwitchClasses/Ovs.py.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/SwitchClasses/ProVision.py.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/SwitchManager.py.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/SwitchClasses/ProVision_3800.py.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/SwitchUtils.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/Tcpdump.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/ToolsSystem.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/TemplatedRequests.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/Topology.py.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/TopologyNetconfNodes.py.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/Topologynew.py.html Importing library '/w/workspace/integration-test-tox-verify-master/csit/libraries/UtilLibrary.py' failed: ModuleNotFoundError: No module named 'SSHLibrary' Traceback (most recent call last): File "/w/workspace/integration-test-tox-verify-master/csit/libraries/UtilLibrary.py", line 2, in from SSHLibrary import SSHLibrary PYTHONPATH: /w/workspace/integration-test-tox-verify-master/csit/libraries /w/workspace/integration-test-tox-verify-master/csit/libraries /opt/pyenv/versions/3.11.7/lib/python311.zip /opt/pyenv/versions/3.11.7/lib/python3.11 /opt/pyenv/versions/3.11.7/lib/python3.11/lib-dynload /w/workspace/integration-test-tox-verify-master/.tox/docs/lib/python3.11/site-packages Try --help for usage information. /w/workspace/integration-test-tox-verify-master/docs/_build/robot/Utils.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/VsctlListParser.py.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/WaitForFailure.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/WorkflowsOpenFlow.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/WaitUtils.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/WorkflowsL2switch.robot.html Importing library '/w/workspace/integration-test-tox-verify-master/csit/libraries/XmlComparator.py' failed: ModuleNotFoundError: No module named 'ipaddr' Traceback (most recent call last): File "/w/workspace/integration-test-tox-verify-master/csit/libraries/XmlComparator.py", line 13, in import ipaddr PYTHONPATH: /w/workspace/integration-test-tox-verify-master/csit/libraries /w/workspace/integration-test-tox-verify-master/csit/libraries /opt/pyenv/versions/3.11.7/lib/python311.zip /opt/pyenv/versions/3.11.7/lib/python3.11 /opt/pyenv/versions/3.11.7/lib/python3.11/lib-dynload /w/workspace/integration-test-tox-verify-master/.tox/docs/lib/python3.11/site-packages Try --help for usage information. /w/workspace/integration-test-tox-verify-master/docs/_build/robot/YangCollection.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/YangmanKeywords.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/controller/CsCommon.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/controller/DnbCommons.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/distribution/StreamDistro.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/controller/DdbCommons.robot.html Importing library '/w/workspace/integration-test-tox-verify-master/csit/libraries/norm_json.py' failed: ModuleNotFoundError: No module named 'jmespath' Traceback (most recent call last): File "/w/workspace/integration-test-tox-verify-master/csit/libraries/norm_json.py", line 9, in import jmespath PYTHONPATH: /w/workspace/integration-test-tox-verify-master/csit/libraries /w/workspace/integration-test-tox-verify-master/csit/libraries /opt/pyenv/versions/3.11.7/lib/python311.zip /opt/pyenv/versions/3.11.7/lib/python3.11 /opt/pyenv/versions/3.11.7/lib/python3.11/lib-dynload /w/workspace/integration-test-tox-verify-master/.tox/docs/lib/python3.11/site-packages Try --help for usage information. /w/workspace/integration-test-tox-verify-master/docs/_build/robot/controller/DrbCommons.robot.html /w/workspace/integration-test-tox-verify-master/docs/_build/robot/excepts.py.html /w/workspace/integration-test-tox-verify-master/docs /w/workspace/integration-test-tox-verify-master/docs/_build/robot /w/workspace/integration-test-tox-verify-master/docs /w/workspace/integration-test-tox-verify-master/docs loading translations [en]... done making output directory... done Converting `source_suffix = '.rst'` to `source_suffix = {'.rst': 'restructuredtext'}`. loading intersphinx inventory 'common-packer' from https://docs.releng.linuxfoundation.org/projects/common-packer/en/stable/objects.inv ... loading intersphinx inventory 'global-jjb' from https://docs.releng.linuxfoundation.org/projects/global-jjb/en/stable/objects.inv ... loading intersphinx inventory 'lfdocs' from https://docs.releng.linuxfoundation.org/en/latest/objects.inv ... loading intersphinx inventory 'lfdocs-conf' from https://docs.releng.linuxfoundation.org/projects/lfdocs-conf/en/stable/objects.inv ... loading intersphinx inventory 'lftools' from https://docs.releng.linuxfoundation.org/projects/lftools/en/stable/objects.inv ... loading intersphinx inventory 'pipelines' from https://docs.releng.linuxfoundation.org/projects/pipelines/en/latest/objects.inv ... loading intersphinx inventory 'python' from https://docs.python.org/3/objects.inv ... loading intersphinx inventory 'odl-releng-builder' from http://docs.opendaylight.org/projects/releng-builder/en/latest/objects.inv ... intersphinx inventory has moved: http://docs.opendaylight.org/projects/releng-builder/en/latest/objects.inv -> https://docs.opendaylight.org/projects/releng-builder/en/latest/objects.inv building [mo]: targets for 0 po files that are out of date writing output... building [html]: targets for 12 source files that are out of date updating environment: [new config] 12 added, 0 changed, 0 removed reading sources... [ 8%] cluster/carbon/caveats reading sources... [ 17%] cluster/carbon/index reading sources... [ 25%] cluster/carbon/release reading sources... [ 33%] cluster/carbon/sandbox reading sources... [ 42%] cluster/carbon/scenarios reading sources... [ 50%] cluster/carbon/sr1 reading sources... [ 58%] cluster/carbon/sr2 reading sources... [ 67%] cluster/carbon/tests reading sources... [ 75%] cluster/index reading sources... [ 83%] index reading sources... [ 92%] run-test-locally reading sources... [100%] system-test-guide looking for now-outdated files... none found pickling environment... done checking consistency... done preparing documents... done copying assets... copying static files... Writing evaluated template result to /w/workspace/integration-test-tox-verify-master/docs/_build/html/_static/basic.css Writing evaluated template result to /w/workspace/integration-test-tox-verify-master/docs/_build/html/_static/documentation_options.js Writing evaluated template result to /w/workspace/integration-test-tox-verify-master/docs/_build/html/_static/language_data.js Writing evaluated template result to /w/workspace/integration-test-tox-verify-master/docs/_build/html/_static/bootstrap-sphinx.css Writing evaluated template result to /w/workspace/integration-test-tox-verify-master/docs/_build/html/_static/bootstrap-sphinx.js copying static files: done copying extra files... copying extra files: done copying assets: done writing output... [ 8%] cluster/carbon/caveats writing output... [ 17%] cluster/carbon/index writing output... [ 25%] cluster/carbon/release writing output... [ 33%] cluster/carbon/sandbox writing output... [ 42%] cluster/carbon/scenarios writing output... [ 50%] cluster/carbon/sr1 writing output... [ 58%] cluster/carbon/sr2 writing output... [ 67%] cluster/carbon/tests writing output... [ 75%] cluster/index writing output... [ 83%] index writing output... [ 92%] run-test-locally writing output... [100%] system-test-guide generating indices... genindex done highlighting module code... writing additional pages... search done dumping search index in English (code: en)... done dumping object inventory... done build succeeded. The HTML pages are in docs/_build/html. standard error: /w/workspace/integration-test-tox-verify-master/csit/libraries/VsctlListParser.py:61: SyntaxWarning: "is not" with a literal. Did you mean "!="? if ctl_ref is not "":