8000 BUG: Avoid duplicating entire exploded column when joining back with origi… by MarcoGorelli · Pull Request #28010 · pandas-dev/pandas · GitHub
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BUG: Avoid duplicating entire exploded column when joining back with origi… #28010

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Merged
merged 23 commits into from
Sep 17, 2019
Merged

BUG: Avoid duplicating entire exploded column when joining back with origi… #28010

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6dc8e94
Remove old whatsnew entry
Aug 29, 2019
6bcb970
Remove comment with issue number
Aug 19, 2019
97baf46
Rewrite
Aug 20, 2019
8d1fdc5
Remove commas after kwargs from autoformatting
Aug 20, 2019
e178a7b
Remove more trailing commas
Aug 20, 2019
8024fd6
Rewrite how string is formatted (for backwards compatibility)
Aug 20, 2019
2059de8
Add multiindex (named and unnamed) to test cases
Aug 20, 2019
dc80a94
Avoid having to keep track of index names
Aug 20, 2019
1f13e2f
Black autoformatting
Aug 20, 2019
437ee94
Add fix and test for case of partially named multiindex
Aug 21, 2019
522c769
Black autoformatting
Aug 21, 2019
52ba53b
Clean up
Aug 21, 2019
0b86a55
Simplify renaming index
Aug 21, 2019
63f2d47
Re-write in more readable way
Aug 29, 2019
82099b1
Use ABCMultiindex to assert type of index
Aug 29, 2019
0496af7
Add whatsnew entry
Aug 29, 2019
efd5463
Add whatsnew entry in v1.0.0.rst
Aug 30, 2019
06d1dc7
Rephrase whatsnew entry, name copy of self result rather than frame
Aug 30, 2019
1904564
Remove special-casing multiindex
Aug 30, 2019
586427c
further simplification using take
MarcoGorelli Sep 3, 2019
71a12fe
Fix merge conflict in whatsnew
MarcoGorelli Sep 15, 2019
e581e1c
Remove repetitive commands in test parametrization
MarcoGorelli Sep 15, 2019
9db4962
Further reformatting
MarcoGorelli Sep 15, 2019
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Fix merge conflict in whatsnew
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@MarcoGorelli
MarcoGorelli committed Sep 15, 2019
commit 71a12fe2fcfa32b7175a7f2759f62fbac23de9e6
2 changes: 2 additions & 0 deletions doc/source/whatsnew/v1.0.0.rst
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Expand Up @@ -170,6 +170,8 @@ Indexing

- Bug in assignment using a reverse slicer (:issue:`26939`)
- Bug in :meth:`DataFrame.explode` would duplicate frame in the presence of duplicates in the index (:issue:`28010`)
- Bug in reindexing a :meth:`PeriodIndex` with another type of index that contained a `Period` (:issue:`28323`) (:issue:`28337`)
- Fix assignment of column via `.loc` with numpy non-ns datetime type (:issue:`27395`)

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