[
https://issues.apache.org/jira/browse/BEAM-7876?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
David Yan resolved BEAM-7876.
-----------------------------
Resolution: Fixed
Fix Version/s: 2.15.0
> Interactive Beam example does not work with Python3
> ---------------------------------------------------
>
> Key: BEAM-7876
> URL: https://issues.apache.org/jira/browse/BEAM-7876
> Project: Beam
> Issue Type: Bug
> Components: examples-python
> Reporter: David Yan
> Priority: Major
> Fix For: 2.15.0
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> When going through the example
> [https://github.com/apache/beam/blob/master/sdks/python/apache_beam/runners/interactive/README.md]
> using Jupyter Notebook running in Python 3, the run() method throws an error
> the following error:
> {{TypeError Traceback (most recent call last)}}
> {{<ipython-input-3-6b6671c6b2d0> in <module>}}
> {{ 3 squares = init_pcoll | 'Square' >> beam.Map(lambda x: x*x)}}
> {{ 4 cubes = init_pcoll | 'Cube' >> beam.Map(lambda x: x**3)}}
> {{----> 5 result = p.run()}}
> {{ 6 result.wait_until_finish()}}{{~/beam/sdks/python/apache_beam/pipeline.py
> in run(self, test_runner_api)}}
> {{ 404 self.to_runner_api(use_fake_coders=True),}}
> {{ 405 self.runner,}}
> {{--> 406 self._options).run(False)}}
> {{ 407 }}
> {{ 408 if
> self._options.view_as(TypeOptions).runtime_type_check:}}{{~/beam/sdks/python/apache_beam/pipeline.py
> in run(self, test_runner_api)}}
> {{ 417 finally:}}
> {{ 418 shutil.rmtree(tmpdir)}}
> {{--> 419 return self.runner.run_pipeline(self, self._options)}}
> {{ 420 }}
> {{ 421 def
> __enter__(self):}}{{~/beam/sdks/python/apache_beam/runners/interactive/interactive_runner.py
> in run_pipeline(self, pipeline, options)}}
> {{ 142 cache_manager=self._cache_manager,}}
> {{ 143 pipeline_graph_renderer=self._renderer)}}
> {{--> 144 display.start_periodic_update()}}
> {{ 145 result = pipeline_to_execute.run()}}
> {{ 146
> result.wait_until_finish()}}{{~/beam/sdks/python/apache_beam/runners/interactive/display/display_manager.py
> in start_periodic_update(self)}}
> {{ 158 def start_periodic_update(self):}}
> {{ 159 """Start a thread that periodically updates the display."""}}
> {{--> 160 self.update_display(True)}}
> {{ 161 self._periodic_update = True}}
> {{
> 162}}{{~/beam/sdks/python/apache_beam/runners/interactive/display/display_manager.py
> in update_display(self, force)}}
> {{ 149 rendered_graph = self._renderer.render_pipeline_graph(}}
> {{ 150 self._pipeline_graph)}}
> {{--> 151 display.display(display.HTML(rendered_graph))}}
> {{ 152 }}
> {{ 153
> _display_progress('Running...')}}{{~/beam/sdks/python/notebook3/lib/python3.6/site-packages/IPython/core/display.py
> in __init__(self, data, url, filename, metadata)}}
> {{ 691 return prefix.startswith("<iframe ") and suffix.endswith("</iframe>")}}
> {{ 692 }}
> {{--> 693 if warn():}}
> {{ 694 warnings.warn("Consider using IPython.display.IFrame instead")}}
> {{ 695 super(HTML, self).__init__(data=data, url=url, filename=filename,
> metadata=metadata)}}{{~/beam/sdks/python/notebook3/lib/python3.6/site-packages/IPython/core/display.py
> in warn()}}
> {{ 689 prefix = data[:10].lower()}}
> {{ 690 suffix = data[-10:].lower()}}
> {{--> 691 return prefix.startswith("<iframe ") and
> suffix.endswith("</iframe>")}}
> {{ 692 }}
> {{ 693 if warn():}}{{TypeError: startswith first arg must be bytes or a tuple
> of bytes, not str}}
>
>
>
> This does not happen with Python 2.
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