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BUG: Regression: <code>Styler.to_html</code> and <code>to_latex</code> do not work if <code>buf</code> is a <code>io.TextIOWrapper</code> since 1.4.0rc0

Bug

IO HTMLread_html, to_html, Styler.apply, Styler.applymapread_html, to_html, Styler.apply, Styler.applymap

IO LaTeXto_latexto_latex

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

Stylerconditional formatting using DataFrame.styleconditional formatting using DataFrame.style

Status: Closed (completed).

#47053 In pandas-dev/pandas;

· by thurisatic was closed on May 19, 2022

BUG: Error writing DataFrame with categorical type column and "Int" data to a CSV file ("int" works of course)

Bug

CategoricalCategorical Data TypeCategorical Data Type

IO CSVread_csv, to_csvread_csv, to_csv

NA - MaskedArraysRelated to pd.NA and nullable extension arraysRelated to pd.NA and nullable extension arrays

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

Status: Closed (completed).

#46812 In pandas-dev/pandas;

· by eason9 was closed on Jun 16, 2022

BUG: <code>MultiIndex.dtypes</code> index behavior changes after 1.4.x

Bug

Dtype ConversionsUnexpected or buggy dtype conversionsUnexpected or buggy dtype conversions

MultiIndex

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

Status: Closed (completed).

#46900 In pandas-dev/pandas;

· by Yikun was closed on Jun 15, 2022

TST: Fix xfail for git component of <code>pd.show_version</code> tests on 32 bit builds

32bit32-bit systems32-bit systems

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

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

Status: Closed (completed).

#46856 In pandas-dev/pandas;

· by mroeschke was closed on Jun 1, 2022

BUG: groupby.transform with execution engine numba does not work in multiindex case since 1.3

Bug

numbanumba-accelerated operationsnumba-accelerated operations

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

Status: Closed (completed).

#46867 In pandas-dev/pandas;

· by derHeinzer was closed on May 19, 2022

PERF: numpy function like np.max called on DataFrame significantly slower than df.max

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).

#46874 In pandas-dev/pandas;

· by auderson was closed on Apr 27, 2022

BUG: <code>DataFrame.shift</code> shows different behavior for <code>axis=1</code> when <code>freq</code> is specified

Bug

DatetimeDatetime data dtypeDatetime data dtype

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

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

Status: Closed (completed).

#47039 In pandas-dev/pandas;

· by wjsi was closed on May 28, 2022

BUG: RangeIndex problem

Bug

Copy / view semantics

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

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

Status: Closed (completed).

#47128 In pandas-dev/pandas;

· by hosseinrasekhi was closed on Jun 5, 2022

BUG: eval and query ignore empty local_dict and global_dict

Bug

expressionspd.eval, querypd.eval, query

Status: Closed (completed).

#47084 In pandas-dev/pandas;

· by Alex-Blade was closed on Jun 5, 2022

BUG: nan comparisons behave differently on identical objects

Bug

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

Numeric OperationsArithmetic, Comparison, and Logical operationsArithmetic, Comparison, and Logical operations

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

Status: Closed (completed).

#47105 In pandas-dev/pandas;

· by vyasr was closed on Jun 15, 2022

BUG: concat column order behaviors changes after 1.4

Bug

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).

#47127 In pandas-dev/pandas;

· by Yikun was closed on Jun 5, 2022

REGR: assignment of pd.NA with enlargement gives object dtype with IntegerArray

Bug

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

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

NA - MaskedArraysRelated to pd.NA and nullable extension arraysRelated to pd.NA and nullable extension arrays

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

Status: Closed (completed).

#47284 In pandas-dev/pandas;

· by simonjayhawkins was closed on Jun 22, 2022

CI: nighlty numpy broke ci

CIContinuous IntegrationContinuous Integration

Upstream issueIssue related to pandas dependencyIssue related to pandas dependency

Status: Closed (completed).

#47391 In pandas-dev/pandas;

· by phofl was closed on Jun 22, 2022

BUG: read_excel does not convert integral floats to ints when backed by openpyxl

Bug

IO Excelread_excel, to_excelread_excel, to_excel

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

Status: Closed (completed).

#46988 In pandas-dev/pandas;

· by mttr was closed on Jun 6, 2022

aggregate the dataframe according to the multi-layer in the axis=1 does not work！

Bug

Duplicate ReportDuplicate issue or pull requestDuplicate issue or pull request

Groupby

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

Status: Closed (completed).

#46995 In pandas-dev/pandas;

· by CatNofishing was closed on May 21, 2022

CI: Builds failing in <code>pandas.show_versions()</code>

CIContinuous IntegrationContinuous Integration

DependenciesRequired and optional dependenciesRequired and optional dependencies

Status: Closed (completed).

#44980 In pandas-dev/pandas;

· by johnzangwill was closed on May 25, 2022

BUG: concat with empty dataframe with columns passed and nonempty dataframe coerces dtype to object

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

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).

#45637 In pandas-dev/pandas;

· by aamster was closed on Jun 22, 2022

Question: why use Azure for CI?

CIContinuous IntegrationContinuous Integration

Status: Closed (completed).

#46351 In pandas-dev/pandas;

· by jonashaag was closed on May 15, 2022

BUG: Error writing DataFrame with categorical type column and interval data to a CSV file

Bug

CategoricalCategorical Data TypeCategorical Data Type

IO CSVread_csv, to_csvread_csv, to_csv

NA - MaskedArraysRelated to pd.NA and nullable extension arraysRelated to pd.NA and nullable extension arrays

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

Status: Closed (completed).

#46297 In pandas-dev/pandas;

· by pjireland was closed on Jun 16, 2022

CI: jinja2 release broke docs build

CIContinuous IntegrationContinuous Integration

Docs

Status: Closed (completed).

#46514 In pandas-dev/pandas;

· by rhshadrach was closed on Apr 5, 2022

BUG: Reading a subset of columns with read_fwf fails if names are given when widths argument is used

Bug

IO Fixed Widthread_fwfread_fwf

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

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

Status: Closed (completed).

#46580 In pandas-dev/pandas;

· by xnx was closed on Apr 8, 2022

BUG: df.nsmallest get wrong results when row contains <code>NaN</code>

Numeric OperationsArithmetic, Comparison, and Logical operationsArithmetic, Comparison, and Logical operations

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

Status: Closed (completed).

#46589 In pandas-dev/pandas;

· by Yikun was closed on Apr 10, 2022

RLS: 1.4.3

Release

Status: Closed (completed).

#46610 In pandas-dev/pandas;

· by simonjayhawkins was closed on Jun 27, 2022

BUG: Replace changes the dtype of other columns

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

replacereplace methodreplace method

Status: Closed (completed).

#46634 In pandas-dev/pandas;

· by bchen1116 was closed on May 25, 2022

BUG: Segmentation fault when JSON serializing a PeriodIndex

Bug

IO JSONread_json, to_json, json_normalizeread_json, to_json, json_normalize

PeriodPeriod data typePeriod data type

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

SegfaultNon-Recoverable ErrorNon-Recoverable Error

Status: Closed (completed).

#46683 In pandas-dev/pandas;

· by jgmarcel was closed on Jun 22, 2022