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BUG: Series.loc with MultiIndex whose first level is all-NaN

Bug

IndexingRelated to indexing on series/frames, not to indexes themselvesRelated to indexing on series/frames, not to indexes themselves

MultiIndex

Status: Merged (completed).

pandas-dev/pandasnumber 42335

#42335 In pandas-dev/pandas;

· by jbrockmendel was closed on Jul 15, 2021

DEPS: use importlib for backend discovery #41815

BuildLibrary building on various platformsLibrary building on various platforms

Status: Merged (completed).

pandas-dev/pandasnumber 42410

#42410 In pandas-dev/pandas;

· by fangchenli was closed on Jul 6, 2021

BUG: MultiIndex.get_loc with string key on DatetimeIndex level

Bug

IndexingRelated to indexing on series/frames, not to indexes themselvesRelated to indexing on series/frames, not to indexes themselves

MultiIndex

Status: Merged (completed).

pandas-dev/pandasnumber 42465

#42465 In pandas-dev/pandas;

· by jbrockmendel was closed on Jul 16, 2021

BUG: Mitigate division with zero in roll_var

Windowrolling, ewma, expandingrolling, ewma, expanding

Status: Merged (completed).

pandas-dev/pandasnumber 42459

#42459 In pandas-dev/pandas;

· by benHeid was closed on Jul 28, 2021

REF: share Index.join

IndexRelated to the Index class or subclassesRelated to the Index class or subclasses

ReshapingConcat, Merge/Join, Stack/Unstack, ExplodeConcat, Merge/Join, Stack/Unstack, Explode

Status: Merged (completed).

pandas-dev/pandasnumber 42238

#42238 In pandas-dev/pandas;

· by jbrockmendel was closed on Jun 25, 2021

DOC: Clarify relation between DateOffset and relativedelta

Docs

FrequencyDateOffsetsDateOffsets

Status: Merged (completed).

pandas-dev/pandasnumber 42251

#42251 In pandas-dev/pandas;

· by daviewales was closed on Jul 11, 2021

PERF: Try fast/slow paths only once in DataFrameGroupby.transform

ApplyApply, Aggregate, Transform, MapApply, Aggregate, Transform, Map

Groupby

PerformanceMemory or execution speed performanceMemory or execution speed performance

Status: Merged (completed).

pandas-dev/pandasnumber 42195

#42195 In pandas-dev/pandas;

· by rhshadrach was closed on Jul 8, 2021

CLN: simplify MultiIndex.get_locs

Clean

IndexingRelated to indexing on series/frames, not to indexes themselvesRelated to indexing on series/frames, not to indexes themselves

MultiIndex

Status: Merged (completed).

pandas-dev/pandasnumber 42245

#42245 In pandas-dev/pandas;

· by jbrockmendel was closed on Jul 4, 2021

DOC: Add pandas-workshop community tutorial.

Docs

Status: Merged (completed).

pandas-dev/pandasnumber 42242

#42242 In pandas-dev/pandas;

· by stefmolin was closed on Jul 11, 2021

PERF/ENH: allow Generator in sampling methods

Enhancement

PerformanceMemory or execution speed performanceMemory or execution speed performance

Status: Merged (completed).

pandas-dev/pandasnumber 42243

#42243 In pandas-dev/pandas;

· by mzeitlin11 was closed on Jul 4, 2021

DOC: create folders in to_csv #24306

IO CSVread_csv, to_csvread_csv, to_csv

Status: Merged (completed).

pandas-dev/pandasnumber 42250

#42250 In pandas-dev/pandas;

· by feefladder was closed on Sep 21, 2021

ENH: allow attrs to be propagated via pd.concat

metadata_metadata, .attrs_metadata, .attrs

ReshapingConcat, Merge/Join, Stack/Unstack, ExplodeConcat, Merge/Join, Stack/Unstack, Explode

Status: Merged (completed).

pandas-dev/pandasnumber 42252

#42252 In pandas-dev/pandas;

· by xiki-tempula was closed on Dec 5, 2021

Updated the return type section of to_datetime

DatetimeDatetime data dtypeDatetime data dtype

Docs

Status: Merged (completed).

pandas-dev/pandasnumber 42244

#42244 In pandas-dev/pandas;

· by prabha-git was closed on Jul 11, 2021

PERF/REF: groupby sample

Groupby

PerformanceMemory or execution speed performanceMemory or execution speed performance

RefactorInternal refactoring of codeInternal refactoring of code

Status: Merged (completed).

pandas-dev/pandasnumber 42233

#42233 In pandas-dev/pandas;

· by mzeitlin11 was closed on Jul 2, 2021

TST: move custom business month tests to own file (#27085)

FrequencyDateOffsetsDateOffsets

Testingpandas testing functions or related to the test suitepandas testing functions or related to the test suite

Status: Merged (completed).

pandas-dev/pandasnumber 42284

#42284 In pandas-dev/pandas;

· by felixDulys was closed on Jul 23, 2021

TST: Added test for upcasting to object when concatinating on categorical indexes with non-identical categories

CategoricalCategorical Data TypeCategorical Data Type

ReshapingConcat, Merge/Join, Stack/Unstack, ExplodeConcat, Merge/Join, Stack/Unstack, Explode

Testingpandas testing functions or related to the test suitepandas testing functions or related to the test suite

Status: Merged (completed).

pandas-dev/pandasnumber 42278

#42278 In pandas-dev/pandas;

· by P-Tillmann was closed on Jul 1, 2021

BUG: OutOfBoundsTimedelta not raised for out-of-bounds Timedelta

Testingpandas testing functions or related to the test suitepandas testing functions or related to the test suite

TimedeltaTimedelta data typeTimedelta data type

Status: Merged (completed).

pandas-dev/pandasnumber 42235

#42235 In pandas-dev/pandas;

· by feefladder was closed on Jul 13, 2021

PERF: tighten _should_compare for MultiIndex

MultiIndex

PerformanceMemory or execution speed performanceMemory or execution speed performance

Status: Merged (completed).

pandas-dev/pandasnumber 42231

#42231 In pandas-dev/pandas;

· by jbrockmendel was closed on Jul 1, 2021

PERF: Avoid copy in DataFrame._reduce corner cases

PerformanceMemory or execution speed performanceMemory or execution speed performance

Status: Merged (completed).

pandas-dev/pandasnumber 42232

#42232 In pandas-dev/pandas;

· by jbrockmendel was closed on Jun 25, 2021

REF: move short-circuiting up to get_indexer

IndexingRelated to indexing on series/frames, not to indexes themselvesRelated to indexing on series/frames, not to indexes themselves

RefactorInternal refactoring of codeInternal refactoring of code

Status: Merged (completed).

pandas-dev/pandasnumber 42230

#42230 In pandas-dev/pandas;

· by jbrockmendel was closed on Jun 25, 2021

REF: de-duplicate MultiIndex.reindex

IndexRelated to the Index class or subclassesRelated to the Index class or subclasses

RefactorInternal refactoring of codeInternal refactoring of code

Status: Merged (completed).

pandas-dev/pandasnumber 42226

#42226 In pandas-dev/pandas;

· by jbrockmendel was closed on Jun 25, 2021

REF: implement Index._should_partial_index

IndexRelated to the Index class or subclassesRelated to the Index class or subclasses

IndexingRelated to indexing on series/frames, not to indexes themselvesRelated to indexing on series/frames, not to indexes themselves

IntervalInterval data typeInterval data type

Status: Merged (completed).

pandas-dev/pandasnumber 42227

#42227 In pandas-dev/pandas;

· by jbrockmendel was closed on Jul 1, 2021

CLN: setops

IndexRelated to the Index class or subclassesRelated to the Index class or subclasses

RefactorInternal refactoring of codeInternal refactoring of code

Status: Merged (completed).

pandas-dev/pandasnumber 42228

#42228 In pandas-dev/pandas;

· by jbrockmendel was closed on Jun 25, 2021

REF: _validate_partial_date_slice -> _can_partial_date_slice

RefactorInternal refactoring of codeInternal refactoring of code

Status: Merged (completed).

pandas-dev/pandasnumber 42225

#42225 In pandas-dev/pandas;

· by jbrockmendel was closed on Jun 25, 2021

BUG: don't silently ignore kwargs in get_indexer_for

Bug

IndexingRelated to indexing on series/frames, not to indexes themselvesRelated to indexing on series/frames, not to indexes themselves

Status: Merged (completed).

pandas-dev/pandasnumber 42310

#42310 In pandas-dev/pandas;

· by jbrockmendel was closed on Jul 1, 2021