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https://issues.apache.org/jira/browse/BEAM-5776?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16654501#comment-16654501
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Valentyn Tymofieiev commented on BEAM-5776:
-------------------------------------------
Traceback (most recent call last):
File "/usr/lib/python3.5/inspect.py", line 1088, in getfullargspec
sigcls=Signature)
File "/usr/lib/python3.5/inspect.py", line 2231, in _signature_from_callable
skip_bound_arg=skip_bound_arg)
File "/usr/lib/python3.5/inspect.py", line 2061, in _signature_from_builtin
raise ValueError("no signature found for builtin {!r}".format(func))
ValueError: no signature found for builtin <method 'upper' of 'str' objects>
> Using methods in map is broken on Python 3
> ------------------------------------------
>
> Key: BEAM-5776
> URL: https://issues.apache.org/jira/browse/BEAM-5776
> Project: Beam
> Issue Type: Sub-task
> Components: sdk-py-core
> Reporter: Robert Bradshaw
> Assignee: Valentyn Tymofieiev
> Priority: Major
>
> E.g.
> {code:java}
> pcoll | beam.Map(str.upper){code}
> no longer works.
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