pandas-dev / pandas

1 Release published by 1 person

• v1.3.1 Pandas 1.3.1

  published Jul 25, 2021

66 Pull requests merged by 22 people

• Backport PR #42735 on branch 1.3.x (REGR: DataFrame.from_records with empty records #42456)

  #42740 merged Jul 27, 2021

• TST: Solution to doctest error in _parse_latex_header_span

  #42700 merged Jul 26, 2021

• REF: dont catch TypeError in Loc

  #42729 merged Jul 26, 2021

• PERF: DataFrame constructor

  #42702 merged Jul 26, 2021

• CI: Add numba back to 3.9 env

  #42734 merged Jul 26, 2021

• REGR: DataFrame.from_records with empty records #42456

  #42735 merged Jul 26, 2021

• CI: Fix asv

  #42732 merged Jul 26, 2021

• Backport PR #42644: BUG: KeyError when a series popped from data frame with bool indexer

  #42728 merged Jul 26, 2021

• DOC: move release note PR #42644

  #42730 merged Jul 26, 2021

• Backport PR #42714 on branch 1.3.x (PERF/REGR: isin slowdown for masked type)

  #42726 merged Jul 26, 2021

• PERF/REGR: isin slowdown for masked type

  #42714 merged Jul 26, 2021

• PERF: unstack

  #42704 merged Jul 26, 2021

• BUG: KeyError when a series popped from data frame with bool indexer

  #42644 merged Jul 26, 2021

• Use find_stack_level for SettingWithCopyWarning

  #42713 merged Jul 26, 2021

• CLN: clean the conda-to-pip script

  #42720 merged Jul 26, 2021

• Backport PR #42715 on branch 1.3.x (Pin xarray to get ci passing)

  #42723 merged Jul 26, 2021

• Pin xarray to get ci passing

  #42715 merged Jul 26, 2021

• ENH: retain masked EA dtypes in groupby with as_index=False

  #41373 merged Jul 25, 2021

• Revert "PERF: tighten _should_compare for MultiIndex"

  #42575 merged Jul 25, 2021

• BUG: MultiIndex.get_loc re-raise TypeError as KeyError

  #42440 merged Jul 25, 2021

• Bug in concat creating invalid MultiIndex

  #42675 merged Jul 25, 2021

• CI: Try to speed up ArrayManager

  #42634 merged Jul 25, 2021

• pd.to_datetime() fails for KeyError when raising monotonic increasing index ValueError

  #42635 merged Jul 25, 2021

• Backport PR #42687 on branch 1.3.x (DOC: Start v1.3.2 release notes)

  #42707 merged Jul 25, 2021

• DOC: Start v1.3.2 release notes

  #42687 merged Jul 25, 2021

• Backport PR #42686 on branch 1.3.x (DOC: 1.3.1 release date)

  #42699 merged Jul 24, 2021

• DOC: 1.3.1 release date

  #42686 merged Jul 24, 2021

• Revert "PERF: DataFrame construction"

  #42698 merged Jul 24, 2021

• Backport PR #42640 on branch 1.3.x (BUG: Fix bug in SeriesGroupBy.value_counts when DataFrame has one row (#42618))

  #42696 merged Jul 24, 2021

• Backport PR #42622 on branch 1.3.x (BUG: `Styler.set_sticky` not handling display of `index names`. 1/2)

  #42695 merged Jul 24, 2021

• Backport PR #42692 on branch 1.3.x (Regression in merge_asof raising KeyError when at least one by columnis in index)

  #42694 merged Jul 24, 2021

• BUG: Fix bug in SeriesGroupBy.value_counts when DataFrame has one row (#42618)

  #42640 merged Jul 24, 2021

• DEPR: Raise FutureWarning when creating empty series without dtype

  #42587 merged Jul 23, 2021

• BUG: `Styler.set_sticky` not handling display of `index names`. 1/2

  #42622 merged Jul 23, 2021

• BUG: ArrayManager construction unwanted copy

  #42689 merged Jul 23, 2021

• CLN: NumericIndex clean-up

  #42693 merged Jul 23, 2021

• PERF: DataFrame construction

  #42631 merged Jul 23, 2021

• TST: Add test for setitem preserving period dtype

  #42654 merged Jul 23, 2021

• Regression in merge_asof raising KeyError when at least one by columnis in index

  #42692 merged Jul 23, 2021

• Revert "Regression in merge_asof raising KeyError when at least one by column is in index

  #42691 merged Jul 23, 2021

• Backport PR #42579 on branch 1.3.x (BUG: DataFrame.copy not consolidating)

  #42679 merged Jul 23, 2021

• Backport PR #42633 on branch 1.3.x (Fixed regression for SettingWithCopyWarning showing incorrect stacklevel)

  #42678 merged Jul 23, 2021

• BUG: DataFrame.copy not consolidating

  #42579 merged Jul 23, 2021

• Backport PR #42648 on branch 1.3.x (DOC: Boolean Array Is Experimental)

  #42676 merged Jul 23, 2021

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

  #42284 merged Jul 23, 2021

• Fixed regression for SettingWithCopyWarning showing incorrect stacklevel

  #42633 merged Jul 22, 2021

• BUG: pivot_table with margins=True and numeric columns is buggy

  #42591 merged Jul 22, 2021

• DOC: Boolean Array Is Experimental

  #42648 merged Jul 22, 2021

• move release note for fix for #42259

  #42661 merged Jul 22, 2021

• Backport PR #42261 (BUG: Fix to_datetime() cache behaviour to not omit duplicated output values)

  #42660 merged Jul 22, 2021

• TST: Fixing broken doctests in pandas/core

  #42598 merged Jul 22, 2021

• TST: test transform('cumcount')

  #42656 merged Jul 22, 2021

• DOC: Correct singular "die"/plural "dice"

  #42574 merged Jul 22, 2021

• DOC: fix small issues

  #42621 merged Jul 22, 2021

• DOC: fix small typo in HDF section of cookbook docs

  #42655 merged Jul 22, 2021

• CLN: move isort config to pyproject.toml

  #42637 merged Jul 21, 2021

• TYP: clean for PY3.8 (TypedDict)

  #42607 merged Jul 21, 2021

• Backport PR #42583 on branch 1.3.x (CI: auto-cancel Azure builds in PR)

  #42641 merged Jul 21, 2021

• CI: auto-cancel Azure builds in PR

  #42583 merged Jul 20, 2021

• Backport PR #42612: Pin fastparquet

  #42632 merged Jul 20, 2021

• DOC: typo in user_guide/visualization.rst

  #42628 merged Jul 20, 2021

• CLN: move mypy config to pyproject.toml

  #42620 merged Jul 20, 2021

• Pin fastparquet

  #42612 merged Jul 20, 2021

• Backport PR #42577 on branch 1.3.x (BUG: Series(dask.array) GH#38645)

  #42623 merged Jul 20, 2021

• PERF: select_dtypes

  #42611 merged Jul 20, 2021

• BUG: Series(dask.array) GH#38645

  #42577 merged Jul 20, 2021

22 Pull requests opened by 17 people

• ENH: add kw `levels` to `Styler.hide_index` to hide only specific levels

  #42636 opened Jul 20, 2021

• BUG: misleading error creating df from 2d array

  #42646 opened Jul 21, 2021

• BUG: ArrayManager reindex with copy=True not copying

  #42647 opened Jul 21, 2021

• BUG: EWM silently failed float32

  #42650 opened Jul 21, 2021

• TYP: Update input of `core.algorithms.duplicated`

  #42657 opened Jul 22, 2021

• TST: Test Loc to set Multiple Items to multiple new columns

  #42665 opened Jul 22, 2021

• Update frame.py

  #42667 opened Jul 22, 2021

• BUG: compute.use_numexpr option not respected

  #42668 opened Jul 22, 2021

• ENH: Add BytesIOWrapper

  #42669 opened Jul 22, 2021

• Fixed bug: Dataframe.sort_values not raising ValueError for ascending-incompatible value and Series.sort_values raising ValueError for int value

  #42684 opened Jul 23, 2021

• REGR: ValueError raised when both prefix and names are set to None

  #42690 opened Jul 23, 2021

• TST: fix read_stata doctest #42670

  #42701 opened Jul 24, 2021

• TST: fixed eng_formatter doctest for #42671

  #42705 opened Jul 25, 2021

• DOC: NumericIndex

  #42706 opened Jul 25, 2021

• updated empty in `pandas.DataFrame.empty` or `pandas.Series.empty` docstrings

  #42709 opened Jul 25, 2021

• DOC use pepy-tech badge in README instead of conda-forge one

  #42710 opened Jul 25, 2021

• TST: Fixed doctest in Styler.to_latex #42672

  #42718 opened Jul 25, 2021

• TST: test_column_types_consistent

  #42725 opened Jul 26, 2021

• DEPR: special-casing dt64/td64 in Series.unique

  #42741 opened Jul 26, 2021

• REF: GroupBy._get_cythonized_result

  #42742 opened Jul 27, 2021

• [BUG] don't mangle null-objects in value_counts

  #42743 opened Jul 27, 2021

• TST GH27994 Add test for dropping empty list / index for a DataFrame …

  #42746 opened Jul 27, 2021

67 Issues closed by 16 people

• `style` settings overwrite all `display` settings

  #31530 closed Jul 27, 2021

• Add method to handle mixed string and non-string types in object column.

  #31498 closed Jul 27, 2021

• helper method to sanitize column names of a pandas DataFrame

  #31417 closed Jul 27, 2021

• Why [] operation on float index doesn't work the same way as int index?

  #31344 closed Jul 27, 2021

• Adding keep parameter to merge method

  #31332 closed Jul 27, 2021

• QST: Rolling on Windows Interval of 'timestamp' should returns same output if all timestamp is same?

  #42724 closed Jul 27, 2021

• TST: Fix doctest in _parse_latex_header_span

  #42673 closed Jul 26, 2021

• BUG: Regression on DataFrame.from_records

  #42456 closed Jul 26, 2021

• BUG: `KeyError` when assigning to Series values after pop from DataFrame

  #42530 closed Jul 26, 2021

• BUG: TypeError when shifting DataFrame created by concatenation of slices and fills with values

  #42401 closed Jul 26, 2021

• BUG: pd.concat breaks pickle on non-unique multiindex

  #42651 closed Jul 25, 2021

• pd.to_datetime() fails for KeyError when raising monotonic increasing index ValueError

  #28238 closed Jul 25, 2021

• on master, pd.show_versions() emits a FutureWarning

  #30872 closed Jul 25, 2021

• pandas.read_csv of S3 gets inconsistent results within / outside Docker

  #30770 closed Jul 25, 2021

• Inconsistency/bug when selecting from a data-frame using an unsorted DatetimeIndex

  #30736 closed Jul 25, 2021

• DataFrameGroupBy object cannot be passed to dict ctor

  #30621 closed Jul 25, 2021

• BUG: Explicitly declaring columns when using loc does not produce a SettingWithCopyWarning

  #42703 closed Jul 25, 2021

• BUG: reading csv error : KeyError: 'x'

  #42681 closed Jul 24, 2021

• BUG: SeriesGroupBy.value_counts() throws IndexError if there is only one group

  #42618 closed Jul 24, 2021

• Default dtype of empty Series: DeprecationWarning -> FutureWarning in 1.1

  #30017 closed Jul 23, 2021

• Period dtype not recognized for added column

  #26861 closed Jul 23, 2021

• pandas.to_datetime in ver 1.3.0 fails to convert dates in arrays of size 51

  #42680 closed Jul 23, 2021

• Renaming DataFrame and Series is inconsistent when inplace=True

  #30211 closed Jul 23, 2021

• Feature request: a simple aggregator function for error checking

  #30187 closed Jul 23, 2021

• No mechanism for indicating missing value in na_values param of read_csv

  #30152 closed Jul 23, 2021

• read_sas floating point error (SAS version 6)

  #30051 closed Jul 23, 2021

• df.to_clipboard() creates wrong output for Excel

  #29992 closed Jul 23, 2021

• shifted column names by reading bigger csv-files

  #29965 closed Jul 23, 2021

• Pandas dropna throwing ValueError: "Cannot convert non-finite values (NA or inf) to integer"

  #29734 closed Jul 23, 2021

• ENH: speed up to_excel

  #42652 closed Jul 23, 2021

• BUG: DataFrame.apply parameters raise a TypeError when the function is called after a groupby

  #42662 closed Jul 23, 2021

• 1.3.0 PerformanceWarning: DataFrame is highly fragmented.

  #42477 closed Jul 23, 2021

• BUG: conda install forced downgrade of other packages

  #42677 closed Jul 22, 2021

• BUG: Less helpful `SettingWithCopyWarning` on new pandas version

  #42570 closed Jul 22, 2021

• QST: `min_periods` effect on `std` rolling aggregation?

  #42653 closed Jul 22, 2021

• BUG: Groupby.transform('cumcount') fails

  #27472 closed Jul 22, 2021

• date_range bug for

  #42638 closed Jul 22, 2021

• Plan for a native string dtype

  #35169 closed Jul 22, 2021

• BUG: v1.3.0 to_datetime caching behavior changed compared to v1.2.5

  #42639 closed Jul 22, 2021

• BUG: pandas 1.3.0 short series of type pandas.Int32DType() fails to calculate 0.75 quantile

  #42642 closed Jul 22, 2021

• ENH: Allow sorting of a dataframe on a boolean/function?

  #29414 closed Jul 22, 2021

• df.to_hdf with mode='a' fails on external drive with IO Error

  #29326 closed Jul 22, 2021

• Unexpected behaviour of uint dtype

  #29290 closed Jul 22, 2021

• combination of groupby & nlargest gives different results based on the number used

  #29284 closed Jul 22, 2021

• ENH: Bulk merge a list of files.

  #29247 closed Jul 22, 2021

• df[:0] returns KeyError when index is float64 and non-monotonic

  #29082 closed Jul 21, 2021

• single row DataFrame to Series conversion

  #29045 closed Jul 21, 2021

• boolean_format parameter to to_csv

  #29026 closed Jul 21, 2021

• Use standalone conda.exe

  #29011 closed Jul 21, 2021

• docs: cheat sheet not opening (infinite redirect loop)

  #28937 closed Jul 21, 2021

• Add cut as a Series method

  #28925 closed Jul 21, 2021

• Faster SQL implementation in d6stack library

  #28817 closed Jul 21, 2021

• Include/exclude using multiple columns

  #28740 closed Jul 21, 2021

• DOC: Docstrings Formatting error PR09,PR08 in pandas.DataFrame

  #28702 closed Jul 21, 2021

• Inconsistent SettingWithCopyWarning

  #28581 closed Jul 21, 2021

• Getting KeyError when accessing one row by string in a DateTimeIndex with 1 element

  #28565 closed Jul 21, 2021

• Should DataFrame.merge match NaN with NaN?

  #22491 closed Jul 21, 2021

• Merge matches np.nan and None while merging

  #22618 closed Jul 21, 2021

• Joining MultiIndexes with NaNs treats NaN as a match-any (unlike regular index joins)

  #25138 closed Jul 21, 2021

• two dataframes outer join on null values

  #7473 closed Jul 21, 2021

• Merge even on NaN

  #28522 closed Jul 21, 2021

• QST: group by rolling slow on one instance but faster on another, is it possible to optimize

  #42625 closed Jul 21, 2021

• QST: why changing dataframe values impacts the array that the dataframe was created from?

  #42573 closed Jul 20, 2021

• BUG: AttributeError: 'DataFrame' object has no attribute '_is_builtin_func'

  #42356 closed Jul 20, 2021

• BUG: - xlsx file not supported

  #42535 closed Jul 20, 2021

• BUG: conda package for pandas and python37 on linux64 install wrong pandas-1.3.0-py39

  #42627 closed Jul 20, 2021

• REGR: passing dask arrays to Series or DataFrame

  #38645 closed Jul 20, 2021

31 Issues opened by 26 people

• BUG: `freq` attribute is `None` after `set_index`

  #42747 opened Jul 27, 2021

• BUG: Failure to build `1.3.1` on Docker image

  #42745 opened Jul 27, 2021

• DOC: WEB: dark mode theme in docs when user has browser in dark mode

  #42744 opened Jul 27, 2021

• BUG: Creating a DataFrame from a structured masked NumPy array.

  #42739 opened Jul 26, 2021

• DEPR: dropping nuisance columns in BaseWindow._apply

  #42738 opened Jul 26, 2021

• ENH: Add nsmallest/nlargest method support for extension array

  #42737 opened Jul 26, 2021

• PERF: Rolling._apply iterates over blocks _and_ columns

  #42736 opened Jul 26, 2021

• BUG: v1.3.1 ImportError: DLL load failed

  #42733 opened Jul 26, 2021

• BUG: Series.groupby fails with InvalidIndexError on time series with a tuple-named grouper.

  #42731 opened Jul 26, 2021

• QST: Pandas agg(list) behavior changed since version 1.3.0

  #42727 opened Jul 26, 2021

• DOC: Version information in headline / menubar

  #42722 opened Jul 26, 2021

• BUG: TypeError when shifting DataFrame created by concatenation of slices and fills with values

  #42719 opened Jul 26, 2021

• DEPR: Remove Int64Index, UInt64Index, Float64Index and Index._is_backward_compat_public_numeric_index

  #42717 opened Jul 25, 2021

• CI: xarray upgrade to 0.19 broke CI Checks pipeline

  #42716 opened Jul 25, 2021

• RLS: 1.3.2

  #42708 opened Jul 25, 2021

• DOC: description for Series.empty is referencing DataFrames instead of Series

  #42697 opened Jul 24, 2021

• BUG: value_counts and nunique behave differently for NaN and None with dropna=False

  #42688 opened Jul 23, 2021

• ENH: Performance optimization for pd.merge introducing fillna= argument

  #42683 opened Jul 23, 2021

• BUG: pd.concat coerces ints to floats if empty DataFrame is present with different columns

  #42682 opened Jul 23, 2021

• TST: Fix doctest in _parse_latex_table_styles

  #42674 opened Jul 22, 2021

• TST: Fix doctest in Styler.to_latex

  #42672 opened Jul 22, 2021

• TST: Fix doctest in EngFormatter

  #42671 opened Jul 22, 2021

• TST: Fix doctest in read_stata

  #42670 opened Jul 22, 2021

• BUG: `DataFrame.to_parquet` doesn't round-trip pyarrow StringDtype

  #42664 opened Jul 22, 2021

• ENH: read_csv() optional parameter `append_line_numbers`

  #42663 opened Jul 22, 2021

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

  #42659 opened Jul 22, 2021

• ENH: Have `DataFrame.to_sql()` return the created `Table` object

  #42645 opened Jul 21, 2021

• BUG: Dividing Int64 and float64 results in a mix of null-types

  #42630 opened Jul 20, 2021

• pandas.DataFrame.pivot_table cannot generate a correct Pivot Table for financial data of `General Ledger`.

  #42629 opened Jul 20, 2021

• BUG: Cannot calculate quantiles from Int64Dtype Series when results are floats

  #42626 opened Jul 20, 2021

• BUG: to_datetime()'s origin does not use unit specified in the parameter

  #42624 opened Jul 20, 2021

221 Unresolved conversations

Sometimes conversations happen on old items that aren’t yet closed. Here is a list of all the Issues and Pull Requests with unresolved conversations.

• ENH: NumericIndex for any numpy int/uint/float dtype

  #41153 commented on Jul 26, 2021 • 13 new comments

• BUG/ENH: group cummin/max handle skipna

  #41854 commented on Jul 25, 2021 • 10 new comments

• BUG: Issue with pd.cut on Series with duplicate index

  #42448 commented on Jul 26, 2021 • 9 new comments

• BUG: 1D slices over extension types turn into N-dimensional slices over ExtensionArrays

  #42430 commented on Jul 26, 2021 • 7 new comments

• BUG: extraneous copy of extension arrays in v1.3.0

  #42501 commented on Jul 27, 2021 • 6 new comments

• RLS: 1.3.1

  #42343 commented on Jul 27, 2021 • 6 new comments

• BUG: TypeError when shifting DataFrame created by concatenation of slices and fills with values

  #42453 commented on Jul 27, 2021 • 6 new comments

• #31793 Add support for subtracting datetime from Timestamp

  #37329 commented on Jul 26, 2021 • 5 new comments

• TYP: Overload concat

  #41184 commented on Jul 26, 2021 • 5 new comments

• STYLE: moving spacing conventions in cython casting to pre-commit

  #42186 commented on Jul 26, 2021 • 5 new comments

• ENH: Serialize view of ArrowStringArray

  #42600 commented on Jul 22, 2021 • 4 new comments

• BUG: groupby.transform doesn't raise on missing arguments

  #26840 commented on Jul 23, 2021 • 4 new comments

• BUG: Index.get_indexer_non_unique misbehaves with multiple nan

  #35498 commented on Jul 26, 2021 • 4 new comments

• ENH: Keeping a GroupBy object after filtering

  #42609 commented on Jul 23, 2021 • 3 new comments

• ENH: Support min/max on ArrowStringArray

  #42597 commented on Jul 24, 2021 • 3 new comments

• BUG: Pandas loc can result in ambiguous result not caught by an exception

  #42603 commented on Jul 25, 2021 • 3 new comments

• RLS: 1.4/2.0

  #41957 commented on Jul 25, 2021 • 3 new comments

• Performance of merge for categorical index vs category column

  #30513 commented on Jul 25, 2021 • 3 new comments

• BUG: read_csv raises an error when both `prefix` and `names` are set to `None`

  #42387 commented on Jul 26, 2021 • 3 new comments

• BUG: groupby.shift returns different columns when fill_value is specified

  #41858 commented on Jul 27, 2021 • 3 new comments

• BUG: Styler.set_sticky(axis="columns") does not work properly with Multi-Index Rows

  #42537 commented on Jul 20, 2021 • 2 new comments

• BUG: DataFrameGroupBy.transform unnecessarily coerces dtype

  #42617 commented on Jul 21, 2021 • 2 new comments

• Inconsistent processing of NaT values by GroupBy

  #29036 commented on Jul 21, 2021 • 2 new comments

• DataFrame.drop with empty DatetimeIndex behaves differently than passing empty Index

  #27994 commented on Jul 21, 2021 • 2 new comments

• pd.read_html() convert <br> to space

  #29528 commented on Jul 23, 2021 • 2 new comments

• TST: Xfails in Python 3.10 CI

  #41940 commented on Jul 24, 2021 • 2 new comments

• BUG: creating DF from series with non exact categorical indices created from pd.cut

  #42424 commented on Jul 24, 2021 • 2 new comments

• Series/DataFrame.rename(<mapper>, level=None) doesn't work in non-ambiguous case

  #30848 commented on Jul 25, 2021 • 2 new comments

• replace method does't work with string type Series

  #31644 commented on Jul 27, 2021 • 2 new comments

• TYP: Type hints & assert statements

  #42044 commented on Jul 26, 2021 • 2 new comments

• STYLE fixup cython linting

  #42142 commented on Jul 26, 2021 • 2 new comments

• TYP: dtype specializations for np.ndarray in algos.pyi (part)

  #42428 commented on Jul 26, 2021 • 2 new comments

• POC: disallow mutating in groupby ops

  #42586 commented on Jul 23, 2021 • 2 new comments

• PyArrow StringDtype / StringArray fallback policy

  #42613 commented on Jul 20, 2021 • 1 new comment

• BUG: unstack after loc produces unexpected index order

  #42450 commented on Jul 20, 2021 • 1 new comment

• combine_first changes datatype

  #28613 commented on Jul 21, 2021 • 1 new comment

• Resample on MultiIndex level takes much more time than on normal column

  #28635 commented on Jul 21, 2021 • 1 new comment

• pandas pivot_table aggfunc/values parameters behaving oddly

  #29080 commented on Jul 21, 2021 • 1 new comment

• ENH: DataFrame.to_expr() method

  #41837 commented on Jul 21, 2021 • 1 new comment

• BUG: Constructing a df using 2D numpy arrays raises misleading error

  #42463 commented on Jul 21, 2021 • 1 new comment

• Indexing MultiIndex with duplicates return Series instead of raw value

  #42102 commented on Jul 21, 2021 • 1 new comment

• Inconsistency of copy and selection methods of data frame objects

  #29282 commented on Jul 22, 2021 • 1 new comment

• Formatting issues with column width truncation for numerical columns

  #29409 commented on Jul 22, 2021 • 1 new comment

• BUG: Python operator 'in' behaves in two different ways on Series object

  #14235 commented on Jul 22, 2021 • 1 new comment

• Add ability to process bad lines for read_csv

  #5686 commented on Jul 22, 2021 • 1 new comment

• ENH: unit of measurement / physical quantities

  #10349 commented on Jul 22, 2021 • 1 new comment

• Series.rmod called with scalar returns inconsistent results based on size of series

  #29602 commented on Jul 23, 2021 • 1 new comment

• Gropuby using pd.Series.mode throws error when `by` column contains values with same starting value

  #29635 commented on Jul 23, 2021 • 1 new comment

• Inconsistent behavior with None between "normal" pandas functions and groupby's last/first/nth

  #29645 commented on Jul 23, 2021 • 1 new comment

• columns comparison with Enum column name triggers TypeError

  #22551 commented on Jul 23, 2021 • 1 new comment

• setting precision for display sometimes shows wrong output

  #30122 commented on Jul 23, 2021 • 1 new comment

• BUG: IntervalIndex.get_indexer fails for homogeneous Period targets

  #30178 commented on Jul 23, 2021 • 1 new comment

• BUG: pivot_table with margins=True and numeric columns is buggy

  #26568 commented on Jul 23, 2021 • 1 new comment

• ENH: col descriptions that'd save in df schemas, helping users avoid creating separate documentation?

  #42582 commented on Jul 25, 2021 • 1 new comment

• BUG: pandas EWM fails silently if data types are float32 instead of float64

  #42452 commented on Jul 25, 2021 • 1 new comment

• ENH: Raise error on ascending='False'

  #41634 commented on Jul 25, 2021 • 1 new comment

• BUG: cannot install Pandas on mac Big Sur 11.1 M1 - Python 3.9

  #41679 commented on Jul 25, 2021 • 1 new comment

• BUG: list-like objects are broadcast to each row (1.3 regression)

  #42549 commented on Jul 26, 2021 • 1 new comment

• API: disallow div/floordiv/pow operators for BooleanArray ?

  #41165 commented on Jul 26, 2021 • 1 new comment

• BUG: series.to_numpy does not work well with pd.Float64Dtype

  #40630 commented on Jul 26, 2021 • 1 new comment

• BUG: fillna(0) does not fill NaNs for Float64Arrays

  #39926 commented on Jul 26, 2021 • 1 new comment

• API: distinguish NA vs NaN in floating dtypes

  #32265 commented on Jul 26, 2021 • 1 new comment

• Dataframe.query uses numexpr even when 'compute.use_numexpr' is False

  #32556 commented on Jul 26, 2021 • 1 new comment

• PERF: DataFrame.mean() is slow with datetime columns

  #31075 commented on Jul 27, 2021 • 1 new comment

• PERF/REF: Check use of numexpr earlier in the DataFrame operation

  #41122 commented on Jul 24, 2021 • 1 new comment

• TYP: Fix typing in ExtensionDtype registry

  #41203 commented on Jul 26, 2021 • 1 new comment

• DOC: Add hint for "Product space too large"

  #41226 commented on Jul 23, 2021 • 1 new comment

• TYP: Typing changes for ExtensionArray.astype

  #41251 commented on Jul 26, 2021 • 1 new comment

• TYP: Typing for ExtensionArray.__getitem__

  #41258 commented on Jul 26, 2021 • 1 new comment

• API: allow nan-likes in StringArray constructor

  #41412 commented on Jul 21, 2021 • 1 new comment

• BUG: CustomBusinessMonthBegin(End) sometimes ignores extra offset (GH41356)

  #41488 commented on Jul 24, 2021 • 1 new comment

• TYP: ExtensionArray delete() and searchsorted()

  #41513 commented on Jul 26, 2021 • 1 new comment

• Fix compilation under cython 3.

  #41530 commented on Jul 26, 2021 • 1 new comment

• CLN: Verify non-ndarray is an ExtensionArray in hash_array GH42003

  #42008 commented on Jul 22, 2021 • 1 new comment

• Fix module name for _LoadSparseFrame

  #42020 commented on Jul 26, 2021 • 1 new comment

• Allow passing custom sentinel into MultiIndex.format

  #42061 commented on Jul 23, 2021 • 1 new comment

• BUG: Styler.hide_columns() does not hide index name row

  #42190 commented on Jul 25, 2021 • 1 new comment

• DEPS: update setuptools min version

  #42304 commented on Jul 26, 2021 • 1 new comment

• BUG: fix regression with SerieGrouper with Timestamp index (#42390)

  #42391 commented on Jul 26, 2021 • 1 new comment

• BUG: Mitigate division with zero in roll_var

  #42459 commented on Jul 24, 2021 • 1 new comment

• BUG: Read excel bug dtype

  #42508 commented on Jul 25, 2021 • 1 new comment

• ENH: Added autofilter parameter to Excel output for both xlsxwriter and openpyxl engines

  #42560 commented on Jul 22, 2021 • 1 new comment

• Operations between DataFrame and ExtensionArray loses EA dtype

  #28527 commented on Jul 21, 2021 • 0 new comments

• Groupby Agg not working if different partials with same name on the same column

  #28570 commented on Jul 21, 2021 • 0 new comments

• Dataframe.plot error (on version 0.25.1)

  #28593 commented on Jul 21, 2021 • 0 new comments

• DOC: Docstrings Formatting Error PR09

  #28602 commented on Jul 21, 2021 • 0 new comments

• Misleading error message when Series.dt.tz_convert overflows

  #28611 commented on Jul 21, 2021 • 0 new comments

• Update plot docs when backend is set.

  #28618 commented on Jul 21, 2021 • 0 new comments

• DataFrame built from ndarray does not preserve `.values.dtype` if there are no columns

  #28704 commented on Jul 21, 2021 • 0 new comments

• Fix PR06 issues in docstrings

  #28724 commented on Jul 21, 2021 • 0 new comments

• Align ExtensionArray with abc.Sequence

  #28770 commented on Jul 21, 2021 • 0 new comments

• apply sometimes unexpectantly casts int64 series to objects

  #28773 commented on Jul 21, 2021 • 0 new comments

• Type check on dataframe aggregation functions

  #28881 commented on Jul 21, 2021 • 0 new comments

• API/DEPR: numeric_only kwarg for apply/reductions

  #28900 commented on Jul 21, 2021 • 0 new comments

• series.rename doesn't return 'None' when inplace=True

  #28920 commented on Jul 21, 2021 • 0 new comments

• setting column value with .loc based on a condition

  #28924 commented on Jul 21, 2021 • 0 new comments

• BUG: pd.DataFrame.select_dtypes() method defaults None to float64 if arg is list-like

  #28943 commented on Jul 21, 2021 • 0 new comments

• percent_rank vs cume_dist

  #28975 commented on Jul 21, 2021 • 0 new comments

• nlargest gives a zero-row dataframe when ordering columns are all NaN

  #28984 commented on Jul 21, 2021 • 0 new comments

• local test failure test_pickle_ordered_from_sentinel

  #28997 commented on Jul 21, 2021 • 0 new comments

• pd.concat inconsistent coercion of None depending of value in rows

  #29023 commented on Jul 21, 2021 • 0 new comments

• set locale to data frame with ambiguous local time leads to

  #29031 commented on Jul 21, 2021 • 0 new comments

• Inconsistent behavior between df.sum() and groupby(col).agg('sum') on lists

  #29033 commented on Jul 21, 2021 • 0 new comments

• Multiple dateoffsets in Holiday raises a TypeError

  #29049 commented on Jul 21, 2021 • 0 new comments

• API: Remove nan-likes from MultiIndex levels

  #29111 commented on Jul 21, 2021 • 0 new comments

• Using groupby with nlargest drops the groupby column if there is only one element per group

  #29129 commented on Jul 21, 2021 • 0 new comments

• ENH: Too much faf getting csv_reader to work.

  #42479 commented on Jul 21, 2021 • 0 new comments

• combine_first: 'DataFrame' object has no attribute 'dtype' with duplicate columns

  #29135 commented on Jul 22, 2021 • 0 new comments

• Pandas.DataFrame.to_sql() Default Insert Behavior Assumes Table Creation

  #29138 commented on Jul 22, 2021 • 0 new comments

• set_axis with callable

  #29145 commented on Jul 22, 2021 • 0 new comments

• CI/TST: Better information about the tests in azure-pipelines

  #29214 commented on Jul 22, 2021 • 0 new comments

• config.register_option allows registering invalid options

  #29242 commented on Jul 22, 2021 • 0 new comments

• API: public way to get the "best values" of a Series?

  #29267 commented on Jul 22, 2021 • 0 new comments

• Named aggregations with multiple columns

  #29268 commented on Jul 22, 2021 • 0 new comments

• API: how to create a "shallow copy" of a DataFrame?

  #29309 commented on Jul 22, 2021 • 0 new comments

• HDF file compression not working

  #29310 commented on Jul 22, 2021 • 0 new comments

• Remove all preprocessing from PlotAccessor.__call__

  #29412 commented on Jul 22, 2021 • 0 new comments

• ENH: Group By Grouping set /Cube/ Rollup

  #29418 commented on Jul 22, 2021 • 0 new comments

• TST: group unstack / stack tests into new hierarchy

  #29440 commented on Jul 22, 2021 • 0 new comments

• Add ability to plot area kind with "steps" drawstyle

  #29451 commented on Jul 22, 2021 • 0 new comments

• Title overlaps subplot

  #29459 commented on Jul 22, 2021 • 0 new comments

• Possible bug in df.update

  #29462 commented on Jul 23, 2021 • 0 new comments

• DataFrame histogram plot error with bins='auto'

  #29484 commented on Jul 23, 2021 • 0 new comments

• BUG in handling of sum/mean of mixed type series

  #29487 commented on Jul 23, 2021 • 0 new comments

• combine_first not unionising the columns of empty dataframes

  #29562 commented on Jul 23, 2021 • 0 new comments

• startingMonth ignored on non-unitary Quarter periods

  #29576 commented on Jul 23, 2021 • 0 new comments

• Feature Request: pandas merge - validation of expected sets

  #29649 commented on Jul 23, 2021 • 0 new comments

• CI: Speed up coverage tests by splitting files

  #29671 commented on Jul 23, 2021 • 0 new comments

• ENH: Group some columns in subplots with DataFrame.plot

  #29688 commented on Jul 23, 2021 • 0 new comments

• Put some marker in the DOCs for functions need in previous installed modules or drivers

  #29689 commented on Jul 23, 2021 • 0 new comments

• Misaligned X axis when plotting datetime indexed series with regular and irregular time index

  #29705 commented on Jul 23, 2021 • 0 new comments

• .loc assignment with empty label list should not convert dtypes

  #29707 commented on Jul 23, 2021 • 0 new comments

• series.to_json + isoformat: bad serialization of naive dates (as utc stamps)

  #29706 commented on Jul 23, 2021 • 0 new comments

• DataFrame.at indexing with date string promotes column type, while indexing with datetime casts value

  #29709 commented on Jul 23, 2021 • 0 new comments

• DEPR: Deprecate `.str` accessor on object-dtype.

  #29710 commented on Jul 23, 2021 • 0 new comments

• Misaligned X axis when plotting datetime with same frequency but different step base

  #29719 commented on Jul 23, 2021 • 0 new comments

• Use entrypoints as an alternative to register_extension_dtype?

  #29774 commented on Jul 23, 2021 • 0 new comments

• performance issue with aggregation last/first of resampler when df contains categoricals

  #29789 commented on Jul 23, 2021 • 0 new comments

• using to_dict with the 'records' orient produces different results from the default one

  #29824 commented on Jul 23, 2021 • 0 new comments

• pivot_table with MultiIndex and margin=True fails with ValueError

  #29834 commented on Jul 23, 2021 • 0 new comments

• Dataframe.aggregate does not work with MultiIndex columns

  #29919 commented on Jul 23, 2021 • 0 new comments

• API: return "correct" missing value scalar from Categorical?

  #29962 commented on Jul 23, 2021 • 0 new comments

• Use an enum for infer_dtype return values?

  #29868 commented on Jul 23, 2021 • 0 new comments

• Pandas Tests rely on inconsistent array coercion

  #29978 commented on Jul 23, 2021 • 0 new comments

• CI: numpy 1.18 deprecating automatic object dtype

  #30030 commented on Jul 23, 2021 • 0 new comments

• Thousands separator for to_csv

  #30045 commented on Jul 23, 2021 • 0 new comments

• df.hist(sharex=True) does not perform as expected

  #30126 commented on Jul 23, 2021 • 0 new comments

• Maybe buggy nullable integer floor division by 0

  #30188 commented on Jul 23, 2021 • 0 new comments

• DOC: when accessed from inside a column-wise `df.apply(..., axis=1)`, row.index refers to df.columns, and row.name refers to df.index value

  #30191 commented on Jul 23, 2021 • 0 new comments

• pd.read_sql timestamptz converted to object dtype

  #30207 commented on Jul 23, 2021 • 0 new comments

• BUG: CustomBusinessMonthBegin(End) sometimes ignores extra offset

  #41356 commented on Jul 23, 2021 • 0 new comments

• BUG: Grouped Rolling Var and Std does not work with closed="left"

  #42442 commented on Jul 23, 2021 • 0 new comments

• PERF: slowdown in groupby/resample mean() method

  #39622 commented on Jul 24, 2021 • 0 new comments

• REGR: Behavior change with empty apply in pandas 1.3.0rc1

  #41997 commented on Jul 24, 2021 • 0 new comments

• REGR: 1.3 behavior change with groupby, apply and side effect

  #41999 commented on Jul 24, 2021 • 0 new comments

• PERF: groupby performance regression in 1.2.x

  #41596 commented on Jul 24, 2021 • 0 new comments

• ENH: #40231 does not allow writing multiple dataframes to a single sheet

  #42221 commented on Jul 24, 2021 • 0 new comments

• REGR: rolling.EWMMethods.time_ewm

  #42333 commented on Jul 24, 2021 • 0 new comments

• PERF: concat of pyarrow string array does not rechunk

  #42357 commented on Jul 24, 2021 • 0 new comments

• BUG: DataFrame.groupby drops timedelta column in v1.3.0

  #42395 commented on Jul 24, 2021 • 0 new comments

• BUG: Regression - AmbiguousTimeError creating DataFrame

  #42505 commented on Jul 24, 2021 • 0 new comments

• CI: Fastparquet upgrade broke CI

  #42588 commented on Jul 24, 2021 • 0 new comments

• read_html docs inconsistent with behaviour if lxml not installed

  #30281 commented on Jul 25, 2021 • 0 new comments

• errors='ignore' does not work on df.replace({col : type}) if col not found

  #30324 commented on Jul 25, 2021 • 0 new comments

• tm.assert_series_equal checking on Integer EA should be exact by default?

  #30347 commented on Jul 25, 2021 • 0 new comments

• Pandas date_range error when the date falls in a DST starting day.

  #30378 commented on Jul 25, 2021 • 0 new comments

• ENH: Requested IO readers/writers

  #30407 commented on Jul 25, 2021 • 0 new comments

• PERF: avoid casting to float in IntegerArray reducing ops

  #30436 commented on Jul 25, 2021 • 0 new comments

• DataFrame.loc multiple columns replace

  #30439 commented on Jul 25, 2021 • 0 new comments

• TYPING: keywords in df.sort_values and sr.sort_values cannot be annotated

  #30451 commented on Jul 25, 2021 • 0 new comments

• Strange behaviour of pd.DataFrame.drop() with inplace argument

  #30484 commented on Jul 25, 2021 • 0 new comments

• DataFrame.replace changes dtype of columns not containing any value to be replaced.

  #30512 commented on Jul 25, 2021 • 0 new comments

• DataFrame.set_index() may not preserve dtype

  #30517 commented on Jul 25, 2021 • 0 new comments

• read_csv s3 file parameter memory_map default is True?

  #30555 commented on Jul 25, 2021 • 0 new comments

• 'Categorical' from output of 'factorize' has different encoding

  #30618 commented on Jul 25, 2021 • 0 new comments

• dtype does not get set to object when adding column with df.at[...] = ['some list']

  #30649 commented on Jul 25, 2021 • 0 new comments

• Re-unify execution paths for to_html() and _repr_html_()

  #30727 commented on Jul 25, 2021 • 0 new comments

• NA is not included in MultiIndex.levels if we construct MI with nan

  #30750 commented on Jul 25, 2021 • 0 new comments

• concat with same column names

  #30776 commented on Jul 25, 2021 • 0 new comments

• Sub-nanosecond datetime support

  #30823 commented on Jul 25, 2021 • 0 new comments

• Feature Request: context manager in which NaN equals NaN

  #30834 commented on Jul 25, 2021 • 0 new comments

• local test failure: test_maybe_promote_datetimetz_with_datetimetz

  #30868 commented on Jul 25, 2021 • 0 new comments

• Index with dtype int32

  #16404 commented on Jul 25, 2021 • 0 new comments

• BUG: MultiIndex assignment fails to broadcast omitted levels

  #42557 commented on Jul 26, 2021 • 0 new comments

• column type changes when assigning with loc and values

  #26779 commented on Jul 26, 2021 • 0 new comments

• DataFrame.set_index when setting a duplicate name now raises

  #30965 commented on Jul 27, 2021 • 0 new comments

• reindex-like has inconsistent behaviour and exceptions if columns don't match

  #31002 commented on Jul 27, 2021 • 0 new comments

• Incorrect boolean bitwise conversion when dtype=object

  #31035 commented on Jul 27, 2021 • 0 new comments

• Pandas .plot() on regularly spaced timeseries result in slow plotting/interaction

  #31074 commented on Jul 27, 2021 • 0 new comments

• dict to series turns tuple keys into single strings

  #31077 commented on Jul 27, 2021 • 0 new comments

• API: inconsistency in casting back to its EA dtype (try_cast_to_ea)

  #31108 commented on Jul 27, 2021 • 0 new comments

• BUG? Intended bebavior? MI levels and codes ordered in lexsorted in from_*

  #31158 commented on Jul 27, 2021 • 0 new comments

• pandas read_csv() doesn't work with StreamingBody object where python engine is required

  #31170 commented on Jul 27, 2021 • 0 new comments

• pd.concat inconsistent with non-unique index

  #31308 commented on Jul 27, 2021 • 0 new comments

• AssertionError creating array with StringDtype instead of StringDtype(), can we have a friendlier error message?

  #31356 commented on Jul 27, 2021 • 0 new comments

• pandas._testing.assert_produces_warning docstring unclear?

  #31453 commented on Jul 27, 2021 • 0 new comments

• ENH: pd.cut should be able to return a Series of IntervalDtype

  #31459 commented on Jul 27, 2021 • 0 new comments

• Last tick label not showing

  #31548 commented on Jul 27, 2021 • 0 new comments

• Assigning column with DataFrame(dtype='category') doesn't preserve categorical dtype, but Series does

  #31581 commented on Jul 27, 2021 • 0 new comments

• replace() involving booleans affects integers and floats equal to 0 and 1

  #31633 commented on Jul 27, 2021 • 0 new comments

• IntervalArray equality with wrong length Iterable raises TypeError

  #31646 commented on Jul 27, 2021 • 0 new comments

• figsize property not accepted for pandas.plotting.autocorrelation_plot - visualization

  #31650 commented on Jul 27, 2021 • 0 new comments

• BUG: concat 'broken' in pandas 1.3.0?

  #42552 commented on Jul 27, 2021 • 0 new comments

• PERF: always slice when indexing on columns

  #33597 commented on Jul 24, 2021 • 0 new comments

• ENH: option to export df to Stata dataset with value labels

  #41042 commented on Jul 22, 2021 • 0 new comments

• ENH: add `environment`, e.g. "longtable", to `Styler.to_latex`

  #41866 commented on Jul 27, 2021 • 0 new comments

• ENH: `Styler.apply_header` and `Styler.applymap_header` for conditional formatting of column/index headers

  #41893 commented on Jul 27, 2021 • 0 new comments

• ENH: `sparse_columns` and `sparse_index` added to `Styler.to_html`

  #41946 commented on Jul 27, 2021 • 0 new comments

• PERF: groupsort_indexer contiguity

  #42031 commented on Jul 26, 2021 • 0 new comments

• BUG: fix `Series.argsort`

  #42090 commented on Jul 24, 2021 • 0 new comments

• [WIP]: DEPR: `Styler.render` in favour of `Styler.to_html`

  #42140 commented on Jul 24, 2021 • 0 new comments

• BUG: .loc with MultiIndex with tuple in level GH#27591

  #42329 commented on Jul 25, 2021 • 0 new comments

• DOC: Add user_guide examples and docstring example for df.plot.box and df.plot.hist

  #42520 commented on Jul 20, 2021 • 0 new comments

• CLN: clean sqlalchemy import

  #42546 commented on Jul 21, 2021 • 0 new comments

• ENH: Add support for nullable boolean and integers in Stata writers

  #42565 commented on Jul 21, 2021 • 0 new comments

• BUG: Groupby min/max with nullable dtypes

  #42567 commented on Jul 26, 2021 • 0 new comments

• DEPR: Index.reindex with duplicate index

  #42568 commented on Jul 23, 2021 • 0 new comments

• BUG: partial-indexing on MultiIndex with IntervalIndex level

  #42569 commented on Jul 25, 2021 • 0 new comments

• CI: clean Azure Windows

  #42581 commented on Jul 21, 2021 • 0 new comments

• STYLE bump pandas-dev-flaker

  #42595 commented on Jul 24, 2021 • 0 new comments

• DOC: update redirecting URLs

  #42619 commented on Jul 22, 2021 • 0 new comments