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https://issues.apache.org/jira/browse/BEAM-12562?focusedWorklogId=702403&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-702403
]
ASF GitHub Bot logged work on BEAM-12562:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 30/Dec/21 19:24
Start Date: 30/Dec/21 19:24
Worklog Time Spent: 10m
Work Description: roger-mike commented on a change in pull request #16256:
URL: https://github.com/apache/beam/pull/16256#discussion_r776843391
##########
File path: sdks/python/apache_beam/dataframe/frames_test.py
##########
@@ -1245,6 +1245,37 @@ def test_idxmax(self):
self._run_test(lambda s2: s2.idxmax(), s2)
self._run_test(lambda s2: s2.idxmax(skipna=False), s2)
+ def test_pipe(self):
+ def df_times(df, column, times):
+ df[column] = df[column] * times
+ return df
+
+ def s_times(s, times):
+ return s * times
+
+ df = pd.DataFrame({'A': [1, 2, 3], 'B': [4, 5, 6]}, index=[0, 1, 2])
+ s = pd.Series([1, 2, 3, 4, 5], index=[0, 1, 2, 3, 4])
+ # s2 = pd.Series([6, 7], index=[5, 6])
+
+ func_1 = df_times
+ func_2 = frames.DeferredDataFrame.sum
+ func_3 = frames.DeferredSeries.sum
+ func_4 = s_times
+ # func_5 = frames.DeferredSeries.append
+
+ self._run_inplace_test(lambda df: df.pipe(func_1, 'A', 2), df)
+ self._run_test(lambda df: df.pipe(func_2), df)
+ # type assert fails when axis=1
+ # self._run_test(lambda df: df.pipe(func_2, axis=1), df)
+ self._run_inplace_test(lambda df: df.pipe(func_1, 'A', 2).pipe(func_2), df)
+ self._run_test(lambda df: df.pipe(func_2).pipe(func_3), df)
+
+ self._run_test(lambda s: s.pipe(func_4, 2), s)
+ self._run_test(lambda s: s.pipe(func_3), s)
+ self._run_test(lambda s: s.pipe(func_4, 2).pipe(func_3), s)
+ # Can't append non-deferred series
+ # self._run_test(lambda s: s.pipe(func_5, s2).pipe(func_4, 2), s)
Review comment:
Does `s2` need to be wrapped as a DeferredSeries to make it work?
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Issue Time Tracking
-------------------
Worklog Id: (was: 702403)
Time Spent: 3h 20m (was: 3h 10m)
> Implement pipe for DataFrame, Series, and GroupBy
> -------------------------------------------------
>
> Key: BEAM-12562
> URL: https://issues.apache.org/jira/browse/BEAM-12562
> Project: Beam
> Issue Type: Improvement
> Components: dsl-dataframe
> Reporter: Brian Hulette
> Assignee: Mike Hernandez
> Priority: P3
> Time Spent: 3h 20m
> Remaining Estimate: 0h
>
> Add an implementation of
> [pipe|https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.pipe.html]
> for DeferredDataFrame, DeferredSeries, and DeferredGroupBy. It should be
> fully unit tested with some combination of pandas_doctests_test.py and
> frames_test.py.
> https://github.com/apache/beam/pull/14274 is an example of a typical PR that
> adds new operations. See
> https://lists.apache.org/thread.html/r8ffe96d756054610dfdb4e849ffc6a741e826d15ba7e5bdeee1b4266%40%3Cdev.beam.apache.org%3E
> for background on the DataFrame API.
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