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GitHub / pandas-dev/pandas issues and pull requests

#61825 - PERF: Brainstorming read_csv perf improvements

Issue - State: open - Opened by jbrockmendel 3 months ago - 3 comments
Labels: Performance, IO CSV, Needs Discussion

#61823 - BUG: drop doesn't recognise MultiIndexes

Issue - State: closed - Opened by pratt-fds 3 months ago - 7 comments
Labels: Bug

#61822 - TST: Adding tests for validating DataFrame.__setitem__ and .loc behavior

Pull Request - State: closed - Opened by niruta25 3 months ago - 3 comments
Labels: Testing

#61821 - DOC: Update link to pytz documentation

Pull Request - State: open - Opened by star1327p 3 months ago

#61821 - DOC: Update link to pytz documentation

Pull Request - State: closed - Opened by star1327p 3 months ago - 2 comments
Labels: Docs

#61819 - BUG: Series created from pre-2.1 legacy pickles lose their names during .copy operations

Issue - State: open - Opened by Liam3851 3 months ago - 2 comments
Labels: Bug, Needs Discussion, IO Pickle

#61818 - Improved installation instruction in docs for clarity

Pull Request - State: closed - Opened by lalitchoudhary81097 3 months ago - 1 comment

#61818 - Improved installation instruction in docs for clarity

Pull Request - State: closed - Opened by lalitchoudhary81097 3 months ago - 1 comment

#61816 - Fix DataFrame.aggregate to preserve extension dtypes with callable functions

Pull Request - State: open - Opened by AdrianoCLeao 3 months ago - 2 comments

#61815 - DOC: Add Raises section to pd.to_numeric docstring

Pull Request - State: open - Opened by renegade620 3 months ago

#61815 - DOC: Add Raises section to pd.to_numeric docstring

Pull Request - State: open - Opened by renegade620 3 months ago

#61814 - CI: Remove PyPy references in CI testing

Pull Request - State: closed - Opened by mroeschke 3 months ago - 1 comment
Labels: CI

#61814 - CI: Remove PyPy references in CI testing

Pull Request - State: closed - Opened by mroeschke 3 months ago
Labels: CI

#61813 - ENH: Add Polars engine to read_csv

Issue - State: open - Opened by datapythonista 3 months ago
Labels: IO CSV, good first issue

#61812 - BUG: Dataframe.aggregate drops pyarrow backend for lambda aggregation functions

Issue - State: open - Opened by flori-ko 3 months ago
Labels: Bug, Needs Triage

#61811 - DOC: Lacking information on error type raised by pd.to_numeric

Issue - State: open - Opened by ericludvigs 3 months ago - 1 comment
Labels: Docs, Needs Triage

#61810 - DOC: update release process maintainer guide

Pull Request - State: open - Opened by jorisvandenbossche 3 months ago - 1 comment
Labels: Docs

#61809 - BUG: Pandas Series with Xarray slow print time.

Issue - State: open - Opened by chaoyupeng 3 months ago - 1 comment
Labels: Bug, Performance, Output-Formatting, Needs Discussion

#61808 - CLN: remove doctest-ignores

Pull Request - State: closed - Opened by jbrockmendel 3 months ago

#61807 - BUG: union of MultiIndex throws exception for datetime and pd.Timestamp with identical values

Issue - State: open - Opened by jwg4 3 months ago
Labels: Bug, Needs Triage

#61806 - DEPS: Bump NumPy and tzdata

Pull Request - State: closed - Opened by mroeschke 3 months ago
Labels: Dependencies

#61806 - DEPS: Bump NumPy and tzdata

Pull Request - State: open - Opened by mroeschke 3 months ago
Labels: Dependencies

#61802 - [pre-commit.ci] pre-commit autoupdate

Pull Request - State: closed - Opened by pre-commit-ci[bot] 3 months ago
Labels: Code Style

#61799 - TST: update expected dtype for sum of decimals with pyarrow 21+

Pull Request - State: closed - Opened by jorisvandenbossche 3 months ago - 1 comment
Labels: Testing, Arrow

#61799 - TST: update expected dtype for sum of decimals with pyarrow 21+

Pull Request - State: closed - Opened by jorisvandenbossche 3 months ago - 3 comments
Labels: Testing, Arrow

#61796 - Bump pypa/cibuildwheel from 2.23.3 to 3.0.1

Pull Request - State: open - Opened by dependabot[bot] 3 months ago
Labels: Build, CI, Dependencies

#61796 - Bump pypa/cibuildwheel from 2.23.3 to 3.0.1

Pull Request - State: closed - Opened by dependabot[bot] 3 months ago - 1 comment
Labels: Build, CI, Dependencies

#61795 - DOC: add section about upcoming pandas 3.0 changes (string dtype, CoW) to 2.3 whatsnew notes

Pull Request - State: closed - Opened by jorisvandenbossche 3 months ago - 7 comments
Labels: Docs

#61795 - DOC: add section about upcoming pandas 3.0 changes (string dtype, CoW) to 2.3 whatsnew notes

Pull Request - State: closed - Opened by jorisvandenbossche 3 months ago - 7 comments
Labels: Docs

#61794 - DOC: prepare 2.3.1 whatsnew notes for release

Pull Request - State: closed - Opened by jorisvandenbossche 3 months ago - 9 comments
Labels: Docs

#61794 - DOC: prepare 2.3.1 whatsnew notes for release

Pull Request - State: closed - Opened by jorisvandenbossche 3 months ago - 9 comments
Labels: Docs

#61793 - Backport PR #61770 on branch 2.3.x (BUG: Fix unpickling of string dtypes of legacy pandas versions)

Pull Request - State: closed - Opened by meeseeksmachine 3 months ago - 1 comment
Labels: Bug, Strings, IO Pickle

#61792 - TST: assert reading of legacy pickles against current data

Pull Request - State: open - Opened by jorisvandenbossche 3 months ago - 1 comment
Labels: Testing, IO Pickle

#61791 - DOC: Improve text color in dark mode for tutorial navigation buttons

Issue - State: closed - Opened by yuting1008 3 months ago - 3 comments
Labels: Docs, Needs Triage

#61790 - DOC: Add link to WebGL in pandas ecosystem

Pull Request - State: open - Opened by star1327p 3 months ago

#61790 - DOC: Add link to WebGL in pandas ecosystem

Pull Request - State: closed - Opened by star1327p 3 months ago - 1 comment
Labels: Docs

#61789 - CLN: remove and udpate for outdated _item_cache

Pull Request - State: closed - Opened by chilin0525 3 months ago - 1 comment
Labels: Testing

#61789 - CLN: remove and udpate for outdated _item_cache

Pull Request - State: closed - Opened by chilin0525 3 months ago
Labels: Testing

#61788 - BUG: read_excel() converts the string "None" in an Excel file to "NaN"

Issue - State: closed - Opened by jmcnamara 3 months ago - 6 comments
Labels: Bug, IO Excel, Closing Candidate

#61787 - DOCS: Add detailed Windows build instructions

Pull Request - State: closed - Opened by TheGuruCo 3 months ago

#61787 - DOCS: Add detailed Windows build instructions

Pull Request - State: closed - Opened by TheGuruCo 3 months ago

#61786 - PERF: avoid object-dtype path in ArrowEA._explode

Pull Request - State: closed - Opened by jbrockmendel 3 months ago - 1 comment
Labels: Arrow

#61786 - PERF: avoid object-dtype path in ArrowEA._explode

Pull Request - State: closed - Opened by jbrockmendel 3 months ago
Labels: Arrow

#61785 - REF: remove unreachable, stronger typing in parsers.pyx

Pull Request - State: closed - Opened by jbrockmendel 3 months ago - 1 comment
Labels: IO CSV

#61785 - REF: remove unreachable, stronger typing in parsers.pyx

Pull Request - State: closed - Opened by jbrockmendel 3 months ago
Labels: IO CSV

#61784 - ENH: Add Coefficient of Variation to DataFrame.describe()

Issue - State: open - Opened by ffaa1234 3 months ago
Labels: Enhancement, Needs Triage

#61783 - PERF: Unnecessary string interning in read_csv?

Issue - State: closed - Opened by jbrockmendel 3 months ago - 2 comments
Labels: Performance, Needs Triage

#61782 - BUG: Errors using pyarrow datetime types on windows

Issue - State: open - Opened by Liam3851 3 months ago - 1 comment
Labels: Bug, Docs, Datetime, Windows, Upstream issue, Arrow

#61780 - BUG: tz_localize(None) with Arrow timestamp

Issue - State: open - Opened by jbrockmendel 3 months ago
Labels: Bug, Datetime, Timezones, Needs Triage, Arrow

#61779 - TST: option_context bug on Mac GH#58055

Pull Request - State: closed - Opened by jbrockmendel 3 months ago - 1 comment
Labels: Bug, Testing

#61779 - TST: option_context bug on Mac GH#58055

Pull Request - State: closed - Opened by jbrockmendel 3 months ago
Labels: Bug, Testing

#61778 - BUG?: creating Categorical from pandas Index/Series with "object" dtype infers string

Issue - State: open - Opened by jorisvandenbossche 3 months ago - 4 comments
Labels: Dtype Conversions, Categorical

#61776 - Request For Help: unexplained ArrowInvalid overflow

Pull Request - State: closed - Opened by jbrockmendel 3 months ago - 5 comments

#61776 - Request For Help: unexplained ArrowInvalid overflow

Pull Request - State: closed - Opened by jbrockmendel 3 months ago - 5 comments

#61775 - API/BUG: different constructor behavior for numpy vs pyarrow dt64tzs

Issue - State: open - Opened by jbrockmendel 3 months ago
Labels: Bug, Needs Triage

#61774 - CI: Add NumPy 1.26 test job

Pull Request - State: closed - Opened by Anantanand005 3 months ago - 1 comment
Labels: CI, Dependencies

#61774 - CI: Add NumPy 1.26 test job

Pull Request - State: open - Opened by Anantanand005 3 months ago

#61773 - BUG: Decimal(NaN) incorrectly allowed in ArrowEA constructor with tim…

Pull Request - State: closed - Opened by jbrockmendel 3 months ago - 2 comments
Labels: Arrow

#61771 - BUG[string]: incorrect index downcast in DataFrame.join

Pull Request - State: closed - Opened by jbrockmendel 3 months ago - 3 comments
Labels: Strings

#61770 - BUG: Fix unpickling of string dtypes of legacy pandas versions

Pull Request - State: closed - Opened by Liam3851 3 months ago - 1 comment
Labels: Bug, Strings, IO Pickle

#61770 - BUG: Fix unpickling of string dtypes of legacy pandas versions

Pull Request - State: closed - Opened by Liam3851 3 months ago - 1 comment
Labels: Bug, Strings, IO Pickle

#61769 - Improve MultiIndex label rename checks

Pull Request - State: open - Opened by TabLand 3 months ago

#61769 - Improve MultiIndex label rename checks

Pull Request - State: open - Opened by TabLand 3 months ago

#61768 - BUG: NA.__and__, __or__, __xor__ with np.bool_ objects

Pull Request - State: open - Opened by jbrockmendel 3 months ago

#61768 - BUG: NA.__and__, __or__, __xor__ with np.bool_ objects

Pull Request - State: closed - Opened by jbrockmendel 3 months ago - 1 comment
Labels: Missing-data

#61766 - BUG: ensure to_numeric down-casts to uint64 for large unsigned integers

Pull Request - State: open - Opened by mohiuddin-khan-shiam 3 months ago
Labels: Dtype Conversions

#61765 - chore: testing

Pull Request - State: closed - Opened by gherulloa 3 months ago

#61764 - ENH: speed up wide DataFrame.line plots by using a single LineCollection

Pull Request - State: open - Opened by EvMossan 3 months ago
Labels: Visualization, Performance

#61763 - BUG: StringDtype objects from pandas <2.3.0 cannot be reliably unpickled in 2.3.0.

Issue - State: closed - Opened by Liam3851 3 months ago - 1 comment
Labels: Bug, Strings, IO Pickle

#61762 - Update __init__.py

Pull Request - State: open - Opened by phanipaladugula 3 months ago

#61762 - Update __init__.py

Pull Request - State: closed - Opened by phanipaladugula 3 months ago - 1 comment

#61761 - Update __init__.py

Pull Request - State: closed - Opened by phanipaladugula 3 months ago

#61760 - BUG: .describe() doesn't work for EAs #61707

Pull Request - State: closed - Opened by kernelism 3 months ago

#61760 - BUG: .describe() doesn't work for EAs #61707

Pull Request - State: open - Opened by kernelism 3 months ago

#61759 - chore: remove redundant words in comment

Pull Request - State: closed - Opened by ianlv 3 months ago - 1 comment
Labels: Docs

#61758 - BUG: user expected pd.isna to be False for NaNs with Float64Dtype

Issue - State: open - Opened by abhmul 3 months ago - 2 comments
Labels: Bug, Needs Triage, PDEP missing values

#61757 - TST (string dtype): resolve skip in misc test_memory_usage

Pull Request - State: closed - Opened by jorisvandenbossche 3 months ago
Labels: Strings

#61757 - TST (string dtype): resolve skip in misc test_memory_usage

Pull Request - State: closed - Opened by jorisvandenbossche 3 months ago
Labels: Strings

#61756 - DOC: Pass docstring validation for Index.infer_objects

Pull Request - State: closed - Opened by mroeschke 3 months ago - 1 comment
Labels: Docs, Index

#61756 - DOC: Pass docstring validation for Index.infer_objects

Pull Request - State: open - Opened by mroeschke 3 months ago
Labels: Docs, Index

#61755 - Revert "[2.3.x] DEPS: Drop Python 3.9 (#60792)"

Pull Request - State: closed - Opened by mroeschke 3 months ago
Labels: Build, CI