[ 
https://issues.apache.org/jira/browse/BEAM-12515?focusedWorklogId=616866&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-616866
 ]

ASF GitHub Bot logged work on BEAM-12515:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 30/Jun/21 01:48
            Start Date: 30/Jun/21 01:48
    Worklog Time Spent: 10m 
      Work Description: benWize opened a new pull request #15104:
URL: https://github.com/apache/beam/pull/15104


   Test pytest.mark.no_xdist to see if it fixes flakiness in test_display_data
   
   ------------------------
   
   Thank you for your contribution! Follow this checklist to help us 
incorporate your contribution quickly and easily:
   
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   `ValidatesRunner` compliance status (on master branch)
   --------------------------------------------------------
   
   <table>
     <thead>
       <tr>
         <th>Lang</th>
         <th>ULR</th>
         <th>Dataflow</th>
         <th>Flink</th>
         <th>Samza</th>
         <th>Spark</th>
         <th>Twister2</th>
       </tr>
     </thead>
     <tbody>
       <tr>
         <td>Go</td>
         <td>---</td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/badge/icon";>
           </a>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Flink/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Flink/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>---</td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Spark/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Go_VR_Spark/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>---</td>
       </tr>
       <tr>
         <td>Java</td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_ULR/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_ULR/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow/lastCompletedBuild/badge/icon?subject=V1";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow_Streaming/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow_Streaming/lastCompletedBuild/badge/icon?subject=V1+Streaming";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow_Java11/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Dataflow_Java11/lastCompletedBuild/badge/icon?subject=V1+Java+11";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_VR_Dataflow_V2/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_VR_Dataflow_V2/lastCompletedBuild/badge/icon?subject=V2";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_VR_Dataflow_V2_Streaming/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_VR_Dataflow_V2_Streaming/lastCompletedBuild/badge/icon?subject=V2+Streaming";>
           </a><br>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink/lastCompletedBuild/badge/icon?subject=Java+8";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink_Java11/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Flink_Java11/lastCompletedBuild/badge/icon?subject=Java+11";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Flink_Batch/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Flink_Batch/lastCompletedBuild/badge/icon?subject=Portable";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Flink_Streaming/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Flink_Streaming/lastCompletedBuild/badge/icon?subject=Portable+Streaming";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Samza/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Samza/lastCompletedBuild/badge/icon";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Samza/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Samza/lastCompletedBuild/badge/icon?subject=Portable";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Spark/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Spark/lastCompletedBuild/badge/icon";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Spark_Batch/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_PVR_Spark_Batch/lastCompletedBuild/badge/icon?subject=Portable";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_SparkStructuredStreaming/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_SparkStructuredStreaming/lastCompletedBuild/badge/icon?subject=Structured+Streaming";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Twister2/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_ValidatesRunner_Twister2/lastCompletedBuild/badge/icon";>
           </a>
         </td>
       </tr>
       <tr>
         <td>Python</td>
         <td>---</td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Py_VR_Dataflow/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Py_VR_Dataflow/lastCompletedBuild/badge/icon?subject=V1";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Py_VR_Dataflow_V2/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Py_VR_Dataflow_V2/lastCompletedBuild/badge/icon?subject=V2";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Py_ValCont/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Py_ValCont/lastCompletedBuild/badge/icon?subject=ValCont";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_Python_PVR_Flink_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_Python_PVR_Flink_Cron/lastCompletedBuild/badge/icon?subject=Portable";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Flink/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Flink/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>---</td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Spark/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Python_VR_Spark/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>---</td>
       </tr>
       <tr>
         <td>XLang</td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Direct/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Direct/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Dataflow/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Dataflow/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Flink/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Flink/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>---</td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Spark/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_XVR_Spark/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>---</td>
       </tr>
     </tbody>
   </table>
   
   Examples testing status on various runners
   --------------------------------------------------------
   
   <table>
     <thead>
       <tr>
         <th>Lang</th>
         <th>ULR</th>
         <th>Dataflow</th>
         <th>Flink</th>
         <th>Samza</th>
         <th>Spark</th>
         <th>Twister2</th>
       </tr>
     </thead>
     <tbody>
       <tr>
         <td>Go</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
       </tr>
       <tr>
         <td>Java</td>
         <td>---</td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_Java_Examples_Dataflow_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_Java_Examples_Dataflow_Cron/lastCompletedBuild/badge/icon?subject=V1";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_Java_Examples_Dataflow_Java11_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_Java_Examples_Dataflow_Java11_Cron/lastCompletedBuild/badge/icon?subject=V1+Java11";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java_Examples_Dataflow_V2/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java_Examples_Dataflow_V2/lastCompletedBuild/badge/icon?subject=V2";>
           </a><br>
         </td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
       </tr>
       <tr>
         <td>Python</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
       </tr>
       <tr>
         <td>XLang</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
       </tr>
     </tbody>
   </table>
   
   Post-Commit SDK/Transform Integration Tests Status (on master branch)
   
------------------------------------------------------------------------------------------------
   
   <table>
     <thead>
       <tr>
         <th>Go</th>
         <th>Java</th>
         <th>Python</th>
       </tr>
     </thead>
     <tbody>
       <tr>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Go/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Java/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Java/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Python36/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Python36/lastCompletedBuild/badge/icon?subject=3.6";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Python37/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Python37/lastCompletedBuild/badge/icon?subject=3.7";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PostCommit_Python38/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PostCommit_Python38/lastCompletedBuild/badge/icon?subject=3.8";>
           </a>
         </td>
       </tr>
     </tbody>
   </table>
   
   Pre-Commit Tests Status (on master branch)
   
------------------------------------------------------------------------------------------------
   
   <table>
     <thead>
       <tr>
         <th>---</th>
         <th>Java</th>
         <th>Python</th>
         <th>Go</th>
         <th>Website</th>
         <th>Whitespace</th>
         <th>Typescript</th>
       </tr>
     </thead>
     <tbody>
       <tr>
         <td>Non-portable</td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_Java_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_Java_Cron/lastCompletedBuild/badge/icon";>
           </a><br>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_Python_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_Python_Cron/lastCompletedBuild/badge/icon?subject=Tests";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_PythonLint_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_PythonLint_Cron/lastCompletedBuild/badge/icon?subject=Lint";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_PythonDocker_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_PythonDocker_Cron/badge/icon?subject=Docker";>
           </a><br>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_PythonDocs_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_PythonDocs_Cron/badge/icon?subject=Docs";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_Go_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_Go_Cron/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_Website_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_Website_Cron/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_Whitespace_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_Whitespace_Cron/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_Typescript_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_Typescript_Cron/lastCompletedBuild/badge/icon";>
           </a>
         </td>
       </tr>
       <tr>
         <td>Portable</td>
         <td>---</td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_Portable_Python_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_Portable_Python_Cron/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>
           <a 
href="https://ci-beam.apache.org/job/beam_PreCommit_GoPortable_Cron/lastCompletedBuild/";>
             <img alt="Build Status" 
src="https://ci-beam.apache.org/job/beam_PreCommit_GoPortable_Cron/lastCompletedBuild/badge/icon";>
           </a>
         </td>
         <td>---</td>
         <td>---</td>
         <td>---</td>
       </tr>
     </tbody>
   </table>
   
   See 
[.test-infra/jenkins/README](https://github.com/apache/beam/blob/master/.test-infra/jenkins/README.md)
 for trigger phrase, status and link of all Jenkins jobs.
   
   
   GitHub Actions Tests Status (on master branch)
   
------------------------------------------------------------------------------------------------
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wheels](https://github.com/apache/beam/workflows/Build%20python%20source%20distribution%20and%20wheels/badge.svg?branch=master&event=schedule)](https://github.com/apache/beam/actions?query=workflow%3A%22Build+python+source+distribution+and+wheels%22+branch%3Amaster+event%3Aschedule)
   [![Python 
tests](https://github.com/apache/beam/workflows/Python%20tests/badge.svg?branch=master&event=schedule)](https://github.com/apache/beam/actions?query=workflow%3A%22Python+Tests%22+branch%3Amaster+event%3Aschedule)
   [![Java 
tests](https://github.com/apache/beam/workflows/Java%20Tests/badge.svg?branch=master&event=schedule)](https://github.com/apache/beam/actions?query=workflow%3A%22Java+Tests%22+branch%3Amaster+event%3Aschedule)
   
   See [CI.md](https://github.com/apache/beam/blob/master/CI.md) for more 
information about GitHub Actions CI.
   


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Issue Time Tracking
-------------------

    Worklog Id:     (was: 616866)
    Time Spent: 1h 40m  (was: 1.5h)

> Python PreCommit flaking in PipelineOptionsTest.test_display_data
> -----------------------------------------------------------------
>
>                 Key: BEAM-12515
>                 URL: https://issues.apache.org/jira/browse/BEAM-12515
>             Project: Beam
>          Issue Type: Bug
>          Components: sdk-py-core, test-failures
>            Reporter: Brian Hulette
>            Priority: P1
>              Labels: flake, sdk-py-core
>          Time Spent: 1h 40m
>  Remaining Estimate: 0h
>
> Seeing this failure pretty frequently on PreCommit since yesterday (06/17).
> The first failure in precommit cron was here: 
> https://ci-beam.apache.org/job/beam_PreCommit_Python_cron/4327/
> Seems related to BEAM-10006, but I'm not sure what changed to make this start 
> flaking recently.
> {code}
> self = <apache_beam.options.pipeline_options_test.PipelineOptionsTest 
> testMethod=test_display_data>
>     def test_display_data(self):
>       for case in PipelineOptionsTest.TEST_CASES:
>         options = PipelineOptions(flags=case['flags'])
>         dd = DisplayData.create_from(options)
> >       hc.assert_that(dd.items, 
> > hc.contains_inanyorder(*case['display_data']))
> apache_beam/options/pipeline_options_test.py:222: 
> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
> _ 
> target/.tox-py36-cloud/py36-cloud/lib/python3.6/site-packages/hamcrest/library/collection/issequence_containinginanyorder.py:68:
>  in describe_mismatch
>     self.matches(item, mismatch_description)
> target/.tox-py36-cloud/py36-cloud/lib/python3.6/site-packages/hamcrest/library/collection/issequence_containinginanyorder.py:64:
>  in matches
>     .describe_mismatch(sequence, mismatch_description)
> target/.tox-py36-cloud/py36-cloud/lib/python3.6/site-packages/hamcrest/core/base_matcher.py:34:
>  in describe_mismatch
>     mismatch_description.append_text('was ').append_description_of(item)
> target/.tox-py36-cloud/py36-cloud/lib/python3.6/site-packages/hamcrest/core/base_description.py:34:
>  in append_description_of
>     description = str(value)
> apache_beam/transforms/display.py:359: in __repr__
>     return 'DisplayDataItem({})'.format(json.dumps(self._get_dict()))
> /usr/lib/python3.6/json/__init__.py:231: in dumps
>     return _default_encoder.encode(obj)
> /usr/lib/python3.6/json/encoder.py:199: in encode
>     chunks = self.iterencode(o, _one_shot=True)
> /usr/lib/python3.6/json/encoder.py:257: in iterencode
>     return _iterencode(o, 0)
> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
> _ 
> self = <json.encoder.JSONEncoder object at 0x7fef54dd19b0>
> o = <apache_beam.options.value_provider.RuntimeValueProvider object at 
> 0x7feeb2ed5c50>
>     def default(self, o):
>         """Implement this method in a subclass such that it returns
>         a serializable object for ``o``, or calls the base implementation
>         (to raise a ``TypeError``).
>     
>         For example, to support arbitrary iterators, you could
>         implement default like this::
>     
>             def default(self, o):
>                 try:
>                     iterable = iter(o)
>                 except TypeError:
>                     pass
>                 else:
>                     return list(iterable)
>                 # Let the base class default method raise the TypeError
>                 return JSONEncoder.default(self, o)
>     
>         """
>         raise TypeError("Object of type '%s' is not JSON serializable" %
> >                       o.__class__.__name__)
> E       TypeError: Object of type 'RuntimeValueProvider' is not JSON 
> serializable
> /usr/lib/python3.6/json/encoder.py:180: TypeError
> {code}



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