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https://issues.apache.org/jira/browse/BEAM-7840?focusedWorklogId=285011&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-285011
]
ASF GitHub Bot logged work on BEAM-7840:
----------------------------------------
Author: ASF GitHub Bot
Created on: 30/Jul/19 14:47
Start Date: 30/Jul/19 14:47
Worklog Time Spent: 10m
Work Description: robertwb commented on pull request #9168: [BEAM-7840]
Provide MapTuple and FlatMapTuple for Python 3 users.
URL: https://github.com/apache/beam/pull/9168#discussion_r308766500
##########
File path: sdks/python/apache_beam/pipeline_test.py
##########
@@ -168,6 +168,35 @@ def test_flatmap_builtin(self):
assert_that(pcoll4, equal_to([11, 12, 12, 12, 13]), label='pcoll4')
pipeline.run()
+ def test_maptuple_builtin(self):
+ pipeline = TestPipeline()
+ pcoll = pipeline | Create([('e1', 'e2')])
+ side1 = beam.pvalue.AsSingleton(pipeline | 'side1' >> Create(['s1']))
+ side2 = beam.pvalue.AsSingleton(pipeline | 'side2' >> Create(['s2']))
+
+ # A test function with a tuple input, an auxiliary parameter,
+ # and some side inputs.
+ fn = lambda e1, e2, t=DoFn.TimestampParam, s1=None, s2=None: (
+ e1, e2, t, s1, s2)
+ assert_that(pcoll | 'NoSides' >> beam.core.MapTuple(fn),
+ equal_to([('e1', 'e2', MIN_TIMESTAMP, None, None)]),
+ label='NoSidesCheck')
+ assert_that(pcoll | 'StaticSides' >> beam.core.MapTuple(fn, 's1', 's2'),
+ equal_to([('e1', 'e2', MIN_TIMESTAMP, 's1', 's2')]),
+ label='StaticSidesCheck')
+ assert_that(pcoll | 'DynamicSides' >> beam.core.MapTuple(fn, side1, side2),
+ equal_to([('e1', 'e2', MIN_TIMESTAMP, 's1', 's2')]),
+ label='DynamicSidesCheck')
+ assert_that(pcoll | 'MixedSides' >> beam.core.MapTuple(fn, s2=side2),
+ equal_to([('e1', 'e2', MIN_TIMESTAMP, None, 's2')]),
+ label='MixedSidesCheck')
+
+ # FlatMapTuple is similar.
+ assert_that(pcoll | 'FlatMap' >> beam.core.FlatMapTuple(fn, s2=side2),
Review comment:
Done.
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Issue Time Tracking
-------------------
Worklog Id: (was: 285011)
Time Spent: 0.5h (was: 20m)
> Create MapTuple and FlatMapTuple to ease migration to Python 3.
> ---------------------------------------------------------------
>
> Key: BEAM-7840
> URL: https://issues.apache.org/jira/browse/BEAM-7840
> Project: Beam
> Issue Type: Test
> Components: sdk-py-core
> Reporter: Robert Bradshaw
> Assignee: Robert Bradshaw
> Priority: Major
> Fix For: 2.15.0
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> These are like Map and FlatMap but expand out tuple input elements across
> several arguments. This will be useful as tuple argument unpacking has been
> removed in Python 3. Instead of having to convert
> Map(lambda (k, v): expresion(k, v))
> into
> Map(lambda k_v: expression(k_v[0], k_v[1]))
> one can now write
> MapTuple(lambda k, v: expression(k, v))
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