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https://issues.apache.org/jira/browse/BEAM-7060?focusedWorklogId=315336&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-315336
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ASF GitHub Bot logged work on BEAM-7060:
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Author: ASF GitHub Bot
Created on: 19/Sep/19 22:40
Start Date: 19/Sep/19 22:40
Worklog Time Spent: 10m
Work Description: udim commented on issue #9591: [BEAM-7060] Cherry-pick
#9562: Prefer inspect module over funcsigs
URL: https://github.com/apache/beam/pull/9591#issuecomment-533335111
@markflyhigh please let us know if the precommit failures are ok to ignore
in the release branch. The docs task failure is being handled in #9620
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Issue Time Tracking
-------------------
Worklog Id: (was: 315336)
Time Spent: 17h 50m (was: 17h 40m)
> Design Py3-compatible typehints annotation support in Beam 3.
> -------------------------------------------------------------
>
> Key: BEAM-7060
> URL: https://issues.apache.org/jira/browse/BEAM-7060
> Project: Beam
> Issue Type: Sub-task
> Components: sdk-py-core
> Reporter: Valentyn Tymofieiev
> Assignee: Udi Meiri
> Priority: Major
> Fix For: 2.16.0
>
> Time Spent: 17h 50m
> Remaining Estimate: 0h
>
> Existing [Typehints implementaiton in
> Beam|[https://github.com/apache/beam/blob/master/sdks/python/apache_beam/typehints/
> ] heavily relies on internal details of CPython implementation, and some of
> the assumptions of this implementation broke as of Python 3.6, see for
> example: https://issues.apache.org/jira/browse/BEAM-6877, which makes
> typehints support unusable on Python 3.6 as of now. [Python 3 Kanban
> Board|https://issues.apache.org/jira/secure/RapidBoard.jspa?rapidView=245&view=detail]
> lists several specific typehints-related breakages, prefixed with "TypeHints
> Py3 Error".
> We need to decide whether to:
> - Deprecate in-house typehints implementation.
> - Continue to support in-house implementation, which at this point is a stale
> code and has other known issues.
> - Attempt to use some off-the-shelf libraries for supporting
> type-annotations, like Pytype, Mypy, PyAnnotate.
> WRT to this decision we also need to plan on immediate next steps to unblock
> adoption of Beam for Python 3.6+ users. One potential option may be to have
> Beam SDK ignore any typehint annotations on Py 3.6+.
> cc: [~udim], [~altay], [~robertwb].
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