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ASF GitHub Bot logged work on BEAM-8156: ---------------------------------------- Author: ASF GitHub Bot Created on: 06/Sep/19 23:16 Start Date: 06/Sep/19 23:16 Worklog Time Spent: 10m Work Description: udim commented on pull request #9509: [BEAM-8156] Add convert_to_typing_type URL: https://github.com/apache/beam/pull/9509#discussion_r321938298 ########## File path: sdks/python/apache_beam/typehints/native_type_compatibility.py ########## @@ -198,6 +202,10 @@ def convert_to_beam_type(typ): arity=-1, beam_type=typehints.Tuple), _TypeMapEntry(match=_match_is_union, arity=-1, beam_type=typehints.Union), + _TypeMapEntry( + match=_match_issubclass(typing.Iterator), Review comment: Line 170 effectively limits the scope to typing module types. Is that good enough? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org Issue Time Tracking ------------------- Worklog Id: (was: 308214) Remaining Estimate: 503h 20m (was: 503.5h) Time Spent: 40m (was: 0.5h) > Finish migration to standard Python typing > ------------------------------------------ > > Key: BEAM-8156 > URL: https://issues.apache.org/jira/browse/BEAM-8156 > Project: Beam > Issue Type: Improvement > Components: sdk-py-core > Reporter: Robert Bradshaw > Assignee: Udi Meiri > Priority: Major > Original Estimate: 504h > Time Spent: 40m > Remaining Estimate: 503h 20m > > We should migrate all Python uses of types to the standard typing module, and > make the typehints.* ones aliases of the Python ones. > > There are three places where we use custom typehints behavior: > (1) is_compatible_with > (2) bind_type_variables/match_type_variables > (3) trivial type inference. > > I would propose that each of these be adapted to a (internal) public > interface that accepts and returns standard typing types, and internally > converts to our (nowhere else exposed) typehints types, performs the logic, > and converts back. Each of these in turn can then be updated, as needed and > orthogonally, to operate on the typing types natively (possibly via deference > to a third-party library). > > I think coder inference could be easily adopted to use typing types directly, > but it may be a fourth place where we do internal conversion first. Another > gotcha is special care may need to be taken if we ever need to pickle these > types (which IIRC may have issues). -- This message was sent by Atlassian Jira (v8.3.2#803003)