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https://issues.apache.org/jira/browse/BEAM-6988?focusedWorklogId=241800&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-241800
]
ASF GitHub Bot logged work on BEAM-6988:
----------------------------------------
Author: ASF GitHub Bot
Created on: 14/May/19 15:33
Start Date: 14/May/19 15:33
Worklog Time Spent: 10m
Work Description: fredo838 commented on issue #8530: [BEAM-6988] solved
problem related to updates of the str object
URL: https://github.com/apache/beam/pull/8530#issuecomment-492191943
I tested
[this](https://github.com/apache/beam/blob/5c7ee600ba8560102f61622c894633955d208f87/sdks/python/apache_beam/typehints/decorators.py#L123-L148)
function, for python 2.7 - 3.5 - 3.6 - 3.7.
The result of calling `getfullargspec(str.split)`
2.7 FullArgSpec(args=['_'], ...)
3.5 FullArgSpec(args=['self'], ...)
3.6 FullArgSpec(args=['self'], ...)
3.7 FullArgSpec(args=['self', 'sep', 'maxsplit], ...)
Seems that is related to the 'monkeypatch' specified in
[here](https://github.com/apache/beam/blob/5c7ee600ba8560102f61622c894633955d208f87/sdks/python/apache_beam/typehints/decorators.py#L274),
which is already an issue in JIRA
([BEAM-5490])(https://issues.apache.org/jira/browse/BEAM-5490), which was
partially fixed by [PR-6781](https://github.com/apache/beam/pull/6781), but
this assumed all python 3 versions behaved the same. Author of this PR is
@tvalentyn , so I guess that makes a full circle. I think we need to rework the
typehints file to remove the monkey patch. It shouldn't be necessairy in
python3.7, because the `inspect` module _can_ now take str.split as input,
while it fails on python3.6 and python3.5. But then how would we go about on
python3.5-3.6? @tvalentyn thoughts?
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Issue Time Tracking
-------------------
Worklog Id: (was: 241800)
Time Spent: 2.5h (was: 2h 20m)
> TypeHints Py3 Error: test_non_function
> (apache_beam.typehints.typed_pipeline_test.MainInputTest) Fails on Python 3.7+
> ---------------------------------------------------------------------------------------------------------------------
>
> Key: BEAM-6988
> URL: https://issues.apache.org/jira/browse/BEAM-6988
> Project: Beam
> Issue Type: Sub-task
> Components: sdk-py-core
> Reporter: Robbe
> Assignee: niklas Hansson
> Priority: Major
> Time Spent: 2.5h
> Remaining Estimate: 0h
>
> {noformat}
> Traceback (most recent call last):
> File
> "/home/jenkins/jenkins-slave/workspace/beam_PreCommit_Python_Commit/src/sdks/python/test-suites/tox/py37/build/srcs/sdks/python/apache_beam/typehints/typed_pipeline_test.py",
> line 53, in test_non_function
> result = ['xa', 'bbx', 'xcx'] | beam.Map(str.strip, 'x')
> File
> "/home/jenkins/jenkins-slave/workspace/beam_PreCommit_Python_Commit/src/sdks/python/test-suites/tox/py37/build/srcs/sdks/python/apache_beam/transforms/ptransform.py",
> line 510, in _ror_
> result = p.apply(self, pvalueish, label)
> File
> "/home/jenkins/jenkins-slave/workspace/beam_PreCommit_Python_Commit/src/sdks/python/test-suites/tox/py37/build/srcs/sdks/python/apache_beam/pipeline.py",
> line 514, in apply
> transform.type_check_inputs(pvalueish)
> File
> "/home/jenkins/jenkins-slave/workspace/beam_PreCommit_Python_Commit/src/sdks/python/test-suites/tox/py37/build/srcs/sdks/python/apache_beam/transforms/ptransform.py",
> line 753, in type_check_inputs
> hints = getcallargs_forhints(argspec_fn, *type_hints[0], **type_hints[1])
> File
> "/home/jenkins/jenkins-slave/workspace/beam_PreCommit_Python_Commit/src/sdks/python/test-suites/tox/py37/build/srcs/sdks/python/apache_beam/typehints/decorators.py",
> line 283, in getcallargs_forhints
> raise TypeCheckError(e)
> apache_beam.typehints.decorators.TypeCheckError: strip() missing 1 required
> positional argument: 'chars'{noformat}
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