List view

REGR: Series.duplicated with category dtype and nulls raises ValueError

Bug

CategoricalCategorical Data TypeCategorical Data Type

Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolatenp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#44351 In pandas-dev/pandas;

· by simonjayhawkins was closed on Nov 12, 2021

PERF: read_csv() very slow after updating to version 1.3.4 for CSV file with large number of columns

Needs TriageIssue that has not been reviewed by a pandas team memberIssue that has not been reviewed by a pandas team member

PerformanceMemory or execution speed performanceMemory or execution speed performance

Status: Closed (completed).

#44106 In pandas-dev/pandas;

· by haghshenas was closed on Oct 26, 2021

BUILD: Unable to compile on Windows 10 with Python 3.10

AdminAdministrative tasks related to the pandas projectAdministrative tasks related to the pandas project

BuildLibrary building on various platformsLibrary building on various platforms

OS XRelated to Mac OS & hardware issues (M1)Related to Mac OS & hardware issues (M1)

Python 3.10

WindowsWindows OSWindows OS

Status: Closed (completed).

#44136 In pandas-dev/pandas;

· by TimeHorse was closed on Nov 27, 2021

BUG:dataframe.groupby('some_column').timedelta.sum() results wrong when timedelta contains NaT (pandas=1.3.0)

Bug

Groupby

Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolatenp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate

Reduction Operationssum, mean, min, max, etc.sum, mean, min, max, etc.

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

TimedeltaTimedelta data typeTimedelta data type

Status: Closed (completed).

#42659 In pandas-dev/pandas;

· by minientertainment was closed on Nov 29, 2021

DOC: <code>pandas.json_normalize</code> missing from API Reference portion of documentation

Docs

IO JSONread_json, to_json, json_normalizeread_json, to_json, json_normalize

Status: Closed (completed).

#42540 In pandas-dev/pandas;

· by TimelikeClosure was closed on Nov 20, 2021

CI: mypy failures

CIContinuous IntegrationContinuous Integration

Compatpandas objects compatability with Numpy or Python functionspandas objects compatability with Numpy or Python functions

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Closed (completed).

#44143 In pandas-dev/pandas;

· by alimcmaster1 was closed on Oct 22, 2021

RLS: 1.3.5

Release

Status: Closed (completed).

#44080 In pandas-dev/pandas;

· by simonjayhawkins was closed on Dec 14, 2021

CI: Doc build is failing because of upstream changes

CIContinuous IntegrationContinuous Integration

DependenciesRequired and optional dependenciesRequired and optional dependencies

Docs

Status: Closed (completed).

#44494 In pandas-dev/pandas;

· by phofl was closed on Nov 20, 2021

BUG: .equals method returns true when comparing floats with dtype object to None

Bug

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#44190 In pandas-dev/pandas;

· by DomKennedy was closed on Oct 29, 2021

CI: test failing in the plotting module

Compatpandas objects compatability with Numpy or Python functionspandas objects compatability with Numpy or Python functions

Visualizationplottingplotting

Status: Closed (completed).

#44521 In pandas-dev/pandas;

· by loicdiridollou was closed on Nov 20, 2021

BUG: resampling DataFrame with DateTimeIndex with holes and <code>uint64</code> columns leads to error on <code>pandas==1.3.2</code> (not in <code>1.2.5</code>)

Bug

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#43329 In pandas-dev/pandas;

· by julienl-met was closed on Dec 10, 2021

BUG: Regression - AmbiguousTimeError creating DataFrame

Bug

ConstructorsSeries/DataFrame/Index/pd.array ConstructorsSeries/DataFrame/Index/pd.array Constructors

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

TimezonesTimezone data dtypeTimezone data dtype

Status: Closed (completed).

#42505 In pandas-dev/pandas;

· by kenahoo was closed on Nov 20, 2021

BUG: DatetimeIndex has become unhashable in 1.3.1?

Bug

DatetimeDatetime data dtypeDatetime data dtype

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

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

Status: Closed (completed).

#42844 In pandas-dev/pandas;

· by yohplala was closed on Nov 20, 2021

BUG: in case of dtype mismatch (int vs category), error message from concat is not crystal clear

Bug

CategoricalCategorical Data TypeCategorical Data Type

Error ReportingIncorrect or improved errors from pandasIncorrect or improved errors from pandas

IO Parquetparquet, featherparquet, feather

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

Status: Closed (completed).

#42552 In pandas-dev/pandas;

· by yohplala was closed on Nov 19, 2021

BUG: df.groupy().rolling().cov() does not group properly and the cartesian product of all groups is returned instead

BlockerBlocking issue or pull request for an upcoming releaseBlocking issue or pull request for an upcoming release

Bug

Groupby

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Windowrolling, ewma, expandingrolling, ewma, expanding

Status: Closed (completed).

#42915 In pandas-dev/pandas;

· by Xnot was closed on Dec 10, 2021

Backport PR #44058 on branch 1.3.x (DOC: Start v1.3.5 release notes)

Docs

Status: Merged (completed).

pandas-dev/pandasnumber 44072

#44072 In pandas-dev/pandas;

· by meeseeksmachine was closed on Oct 17, 2021

CI: Pin pre-commit python version

CIContinuous IntegrationContinuous Integration

Status: Merged (completed).

pandas-dev/pandasnumber 44134

#44134 In pandas-dev/pandas;

· by alimcmaster1 was closed on Oct 21, 2021

Backport PR #44134 on branch 1.3.x (CI: Pin pre-commit python version)

CIContinuous IntegrationContinuous Integration

Status: Merged (completed).

pandas-dev/pandasnumber 44135

#44135 In pandas-dev/pandas;

· by meeseeksmachine was closed on Oct 21, 2021

Backport PR #44204 on branch 1.3.x (CI: Python Dev build)

CIContinuous IntegrationContinuous Integration

Status: Merged (completed).

pandas-dev/pandasnumber 44208

#44208 In pandas-dev/pandas;

· by meeseeksmachine was closed on Oct 28, 2021

Backport PR #44195 on branch 1.3.x (Fix series with none equals float series)

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 44229

#44229 In pandas-dev/pandas;

· by meeseeksmachine was closed on Oct 29, 2021

CI: Python Dev build

CIContinuous IntegrationContinuous Integration

Status: Merged (completed).

pandas-dev/pandasnumber 44204

#44204 In pandas-dev/pandas;

· by alimcmaster1 was closed on Oct 27, 2021

Revert "Backport PR #44204 on branch 1.3.x (CI: Python Dev build)"

CIContinuous IntegrationContinuous Integration

Status: Merged (completed).

pandas-dev/pandasnumber 44244

#44244 In pandas-dev/pandas;

· by lithomas1 was closed on Oct 31, 2021

CI: Fix mypy failures

CIContinuous IntegrationContinuous Integration

Compatpandas objects compatability with Numpy or Python functionspandas objects compatability with Numpy or Python functions

Typingtype annotations, mypy/pyright type checkingtype annotations, mypy/pyright type checking

Status: Merged (completed).

pandas-dev/pandasnumber 44144

#44144 In pandas-dev/pandas;

· by alimcmaster1 was closed on Oct 22, 2021

Backport PR #44192 on branch 1.3.x (PERF: read_csv GH#44106)

IO CSVread_csv, to_csvread_csv, to_csv

PerformanceMemory or execution speed performanceMemory or execution speed performance

Status: Merged (completed).

pandas-dev/pandasnumber 44197

#44197 In pandas-dev/pandas;

· by meeseeksmachine was closed on Oct 27, 2021

DOC: Start v1.3.5 release notes

Docs

Status: Merged (completed).

pandas-dev/pandasnumber 44058

#44058 In pandas-dev/pandas;

· by simonjayhawkins was closed on Oct 17, 2021