pandas-dev / pandas

75 Pull requests merged by 29 people

• Backport PR #42571 on branch 1.3.x (CI: Fixed a typo in Web and Docs)

  #42578 merged Jul 17, 2021

• CI: Fixed a typo in Web and Docs

  #42571 merged Jul 16, 2021

• Backport PR #42558: CI: Remove xfail for xpassing test

  #42563 merged Jul 16, 2021

• Backport PR #42554 on branch 1.3.x (Modified ecosystem.rst to include ibis)

  #42564 merged Jul 16, 2021

• Modified ecosystem.rst to include ibis

  #42554 merged Jul 16, 2021

• CI: Remove xfail for xpassing test

  #42558 merged Jul 16, 2021

• Backport PR #42556: CI: Run all GHA checks on backport branch

  #42561 merged Jul 16, 2021

• CI: Run all GHA checks on backport branch

  #42556 merged Jul 16, 2021

• BUG: MultiIndex.get_loc with string key on DatetimeIndex level

  #42465 merged Jul 16, 2021

• REF: de-duplicate Categorical _validate_foo_value

  #41919 merged Jul 15, 2021

• REF: implement Index._get_indexer_strict

  #42485 merged Jul 15, 2021

• Backport PR #42538: CI: Run some checks on push on 1.3.x

  #42551 merged Jul 15, 2021

• DOC: Unsuppress relevant dataframe in split-apply-combine guide

  #42340 merged Jul 15, 2021

• Backport PR #42541 on branch 1.3.x (REGR: concat(ints, bools) casting to object #42092)

  #42548 merged Jul 15, 2021

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

  #42335 merged Jul 15, 2021

• BUG: 2D ndarray of dtype 'object' is always copied upon construction

  #39272 merged Jul 15, 2021

• BUG: json_normalize not consistently ignoring errors (#41876)

  #42179 merged Jul 15, 2021

• BUG: Fix multi-index colname references in read_csv c engine.

  #42519 merged Jul 15, 2021

• BUG: string slicing on MultiIndex DatetimeIndex level

  #42476 merged Jul 15, 2021

• REGR: concat(ints, bools) casting to object #42092

  #42541 merged Jul 15, 2021

• Backport PR #42473: REGR: isin with nullable types with missing values raising

  #42543 merged Jul 15, 2021

• DOC: update array-like parameters if scalars accepted

  #41985 merged Jul 14, 2021

• TYP: clean for PY3.8 (final)

  #42422 merged Jul 14, 2021

• TST: Test reindex w/ multiindex df (GH21247)

  #42528 merged Jul 14, 2021

• DEPR: ignoring missing labels when indexing on MultiIndex level

  #42351 merged Jul 14, 2021

• CI: Run some checks on push on 1.3.x

  #42538 merged Jul 14, 2021

• Revert "CI: runtime warning in npdev build"

  #42539 merged Jul 14, 2021

• DOC: add height param added to user_guide

  #42529 merged Jul 14, 2021

• REGR: isin with nullable types with missing values raising

  #42473 merged Jul 14, 2021

• Backport PR #42524 on branch 1.3.x (CI: Xfail less on Python 3.10)

  #42525 merged Jul 14, 2021

• Backport PR #42527 on branch 1.3.x (CI: Test Python dev on 1.3.x PRs)

  #42531 merged Jul 14, 2021

• Backport PR #42475: PERF/REGR: astype changing order of some 2d data

  #42526 merged Jul 14, 2021

• TYP: npt.NDarray

  #42488 merged Jul 14, 2021

• CI: Test Python dev on 1.3.x PRs

  #42527 merged Jul 14, 2021

• ENH: validate the argument `width` on `Styler.bar`

  #42511 merged Jul 13, 2021

• REF: de-duplicate WrappedCythonOp._ea_wrap_cython_operation

  #42521 merged Jul 13, 2021

• CI: Xfail less on Python 3.10

  #42524 merged Jul 13, 2021

• PERF/REGR: astype changing order of some 2d data

  #42475 merged Jul 13, 2021

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

  #42235 merged Jul 13, 2021

• DOC: Only include numpy.std note for std, not all ddof methods

  #42290 merged Jul 13, 2021

• Backport PR #42516 on branch 1.3.x (DOC: fixes for 1.3.1 release notes)

  #42517 merged Jul 13, 2021

• DOC: fixes for 1.3.1 release notes

  #42516 merged Jul 13, 2021

• CLN: remove deprecated sqlite cursor

  #42507 merged Jul 13, 2021

• ENH: Styler.bar height control

  #42483 merged Jul 13, 2021

• Backport PR #42451: CI: Sync all 3.9 builds (part)

  #42515 merged Jul 13, 2021

• Backport PR #42464 on branch 1.3.x (BUG: `to_xml` with `index=False` and offset input index)

  #42513 merged Jul 13, 2021

• BUG: `to_xml` with `index=False` and offset input index

  #42464 merged Jul 12, 2021

• TST CLN: test_bar.py cleanup 3/3: NaN cases

  #42510 merged Jul 12, 2021

• DOC: Adding examples to DataFrameGroupBy.rank #38972

  #42402 merged Jul 12, 2021

• TST CLN: Styler bar tests cleanup 2/3

  #42504 merged Jul 12, 2021

• Backport PR #42486 on branch 1.3.x (REGR: to_dict(orient={"records", "split", "dict"}) slowdown)

  #42502 merged Jul 12, 2021

• TYP/CLN: implicit re-export

  #42498 merged Jul 12, 2021

• ENH: Fix `by` in DataFrame.plot.hist and DataFrame.plot.box

  #28373 merged Jul 12, 2021

• REF: implement MultiIndex._get_indexer_level_0

  #42480 merged Jul 12, 2021

• CI: Don't auto-cancel on master

  #42467 merged Jul 12, 2021

• ⬆️ UPGRADE: Autoupdate pre-commit config

  #42493 merged Jul 12, 2021

• CLN: renamed a test file

  #42496 merged Jul 12, 2021

• TYP/CLN: update setup.cfg

  #42500 merged Jul 12, 2021

• Backport PR #42487 on branch 1.3.x (CI: add back xfail for flaky chunksize test)

  #42491 merged Jul 12, 2021

• REGR: to_dict(orient={"records", "split", "dict"}) slowdown

  #42486 merged Jul 12, 2021

• BUG: avoid unnecessary casting in CategoricalIndex.reindex

  #42063 merged Jul 12, 2021

• CLN TST: Refactor `Styler.bar` tests through parametrisation

  #42472 merged Jul 12, 2021

• CI: add back xfail for flaky chunksize test

  #42487 merged Jul 12, 2021

• Backport PR #42439 on branch 1.3.x (DOC: Refactor Numba enhancing performance and add parallelism caveat)

  #42490 merged Jul 12, 2021

• Backport PR #42469 on branch 1.3.x (REGR: indexing with list subclass)

  #42489 merged Jul 12, 2021

• DOC: Refactor Numba enhancing performance and add parallelism caveat

  #42439 merged Jul 12, 2021

• REGR: indexing with list subclass

  #42469 merged Jul 12, 2021

• to_timedelta docs warning on default behaviour

  #42285 merged Jul 11, 2021

• PERF: Use list comprehension to join strings (#41753)

  #42173 merged Jul 11, 2021

• DOC: Add pandas-workshop community tutorial.

  #42242 merged Jul 11, 2021

• Updated the return type section of to_datetime

  #42244 merged Jul 11, 2021

• DOC: Clarify relation between DateOffset and relativedelta

  #42251 merged Jul 11, 2021

• DOC: GH42420 Fix typo in windows C compiler install guide

  #42470 merged Jul 11, 2021

• TST: Add unmatched warning messages to assert_produces_warning() error

  #42181 merged Jul 11, 2021

• DOC: Substitute example in DataFrame.to_markdown docstring (#42126)

  #42144 merged Jul 11, 2021

21 Pull requests opened by 12 people

• Improve boolean indexing docs

  #42484 opened Jul 11, 2021

• Improved docstring for `to_datetime`

  #42494 opened Jul 12, 2021

• Omerdan03 bug pd.series.rename #42481

  #42495 opened Jul 12, 2021

• ENH - Improved error message for interpolating IntegerArrays (#41565)

  #42503 opened Jul 12, 2021

• BUG: Read excel bug dtype

  #42508 opened Jul 12, 2021

• WIP: try to debug segfault related issue

  #42518 opened Jul 13, 2021

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

  #42520 opened Jul 13, 2021

• Make components of Suffixes Optional

  #42544 opened Jul 15, 2021

• CLN: clean sqlalchemy import

  #42546 opened Jul 15, 2021

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

  #42560 opened Jul 16, 2021

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

  #42565 opened Jul 16, 2021

• BUG: Groupby min/max with nullable dtypes

  #42567 opened Jul 16, 2021

• DEPR: Index.reindex with duplicate index

  #42568 opened Jul 16, 2021

• BUG: partial-indexing on MultiIndex with IntervalIndex level

  #42569 opened Jul 16, 2021

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

  #42574 opened Jul 16, 2021

• Revert "PERF: tighten _should_compare for MultiIndex"

  #42575 opened Jul 16, 2021

• BUG: concat bool+int with ArrayManager

  #42576 opened Jul 16, 2021

• BUG: Series(dask.array) GH#38645

  #42577 opened Jul 16, 2021

• BUG: DataFrame.copy not consolidating

  #42579 opened Jul 16, 2021

• CI: clean Azure Windows

  #42581 opened Jul 17, 2021

• CI: auto-cancel Azure builds in PR

  #42583 opened Jul 17, 2021

60 Issues closed by 13 people

• BUG: Columns/Series with np.array() stop working in v1.2+

  #42555 closed Jul 16, 2021

• BUG: tqdm progress_apply fails on the latest version of Pandas

  #42566 closed Jul 16, 2021

• DOC: add ibis to pandas ecosystem

  #20483 closed Jul 16, 2021

• QST: is both an index level and a column label, which is ambiguous. + None of ['_ITEM'] are in the columns + KeyError

  #42514 closed Jul 16, 2021

• QST: Efficiently stylizing and appending new dataframes to existing excel

  #41276 closed Jul 16, 2021

• QST: Error in Pandas to_datetime conversion?

  #41623 closed Jul 16, 2021

• TST Improve error message of assert_produces_warning

  #42103 closed Jul 16, 2021

• Add optional ./ci/code_checks.sh pre-commit

  #36956 closed Jul 16, 2021

• CI: activate Github actions for pushes to backport branch (1.2.x)

  #39696 closed Jul 16, 2021

• ENH: count should be integer type in .describe()

  #42547 closed Jul 15, 2021

• BUG: IndexError when slicing a series, if a level of MultiIndex contains only NaN values

  #42055 closed Jul 15, 2021

• BUG: 2D ndarray of dtype 'object' is always copied upon construction

  #39263 closed Jul 15, 2021

• BUG: seemingly unexpected behavior with errrors='ignore' in json_normalize()

  #41876 closed Jul 15, 2021

• option dtype in pandas.read_csv does not work properly for mulilevel columns

  #42446 closed Jul 15, 2021

• REGR: 1.3.0rc behavior change with concatenating boolean and numeric columns

  #42092 closed Jul 15, 2021

• BUG: Pandas `string` dtype reverts to `object` dtype when initialising index

  #42455 closed Jul 15, 2021

• reindex() inconsistency between Index and MultiIndex

  #21247 closed Jul 14, 2021

• BUG: isin() with missing values does not work in 1.3.0 with extension dtypes

  #42405 closed Jul 14, 2021

• CI: series_methods.IsInLongSeriesLookUpDominates.time_isin fails with NumPy 1.20+

  #39844 closed Jul 14, 2021

• MatplotlibDeprecationWarning for ax.is_first_col()

  #42532 closed Jul 14, 2021

• Performance regression in DataFrame reduction ops

  #38592 closed Jul 13, 2021

• BUG: astype() on an integer DataFrame changes the order of data

  #42396 closed Jul 13, 2021

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

  #36615 closed Jul 13, 2021

• ENH: I wish add a parameter to adjust bar function's height in Styler

  #36419 closed Jul 13, 2021

• BUG: `to_xml` raises `KeyError` for `index=False` when the index does not start at zero

  #42458 closed Jul 12, 2021

• pandas.core.groupby.DataFrameGroupBy.rank() dense_rank does not work

  #38972 closed Jul 12, 2021

• DataFrame.plot.box ignores by argument

  #15079 closed Jul 12, 2021

• CI: disable auto-cancel for master branch

  #42076 closed Jul 12, 2021

• BUG: df.to_dict(orient="records") significantly slower in Pandas 1.3.0

  #42352 closed Jul 12, 2021

• BUG: `list` subclass objects don't work as indexers for data frames in 1.3.x

  #42433 closed Jul 12, 2021

• BUG: The difference in behaviour of indexing between 1.2.4 and 1.3.0

  #42461 closed Jul 12, 2021

• BUG: to_timedelta() works differently depending on type of arg for the same unit

  #34633 closed Jul 11, 2021

• DOC: Add New Community Tutorial

  #42009 closed Jul 11, 2021

• BUG: to_datetime() returns object instead of datetime type or raising exception

  #42229 closed Jul 11, 2021

• BUG: Unable to create DateOffset from two dates

  #41847 closed Jul 11, 2021

• DOC: Inconsistency in Setting Up Dev Env

  #42420 closed Jul 11, 2021

• Modify get_group() method to allow getting multiple groups

  #28298 closed Jul 11, 2021

• NDFrame.sum ignores min_count for object dtype

  #28274 closed Jul 11, 2021

• ENH: .pipe to subset of columns

  #28254 closed Jul 11, 2021

• QST: Apple M1, arm64

  #41787 closed Jul 11, 2021

• BUG: dataframe.fillna doesn't work

  #41149 closed Jul 11, 2021

• DOC DataFrame.to_markdown `examples` don't get substituted

  #42126 closed Jul 11, 2021

• Feature request: groupby on columns with overlapping column combinations

  #28190 closed Jul 11, 2021

• New characteristic to cumsum

  #28127 closed Jul 11, 2021

• to_datetime errors='ignore' unexpected behavior

  #28120 closed Jul 11, 2021

• Feature request: add the option of empty query to pandas.DataFrame.query

  #27608 closed Jul 10, 2021

• merge_asof parameters "index", "prefix"

  #27582 closed Jul 10, 2021

• Add a new DataFrame.dti accessor

  #27581 closed Jul 10, 2021

• BUG: Grouper.cov emits warning unlike DataFrame.cov

  #27570 closed Jul 10, 2021

• Allow plotting backend option context without matplotlib

  #27517 closed Jul 10, 2021

• Not sure if that's a bug: if a CSV is read and less names are given, than there are names, it creats an index

  #27515 closed Jul 10, 2021

• [Feature request] Add a "filter" method to Index and Series

  #27439 closed Jul 10, 2021

• Feature request: add option to disable columns.levels autosorting

  #27431 closed Jul 10, 2021

• validate ='m:m' in dataframe.merge should have a meaningful purpose

  #27430 closed Jul 10, 2021

• BUG: pip install pandas==1.2.3 triggers source build on aarch64 (manylinux2014 wheel missing from PyPi)

  #40382 closed Jul 10, 2021

• Add 'how' option to 'first_valid_index'

  #27397 closed Jul 10, 2021

• Discuss: transformation vs. aggregation in `agg` vs. `transform`

  #27389 closed Jul 10, 2021

• Timedelta returns wrong value

  #27285 closed Jul 10, 2021

• BUG: Replacing NaN with None in Pandas 1.3 does not work

  #42423 closed Jul 10, 2021

• BUG: 1.3.0 styler.render() throws exception when using highlight_max/highlight_min (code worked with pandas 1.2.5)

  #42466 closed Jul 10, 2021

31 Issues opened by 28 people

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

  #42582 opened Jul 17, 2021

• ENH/CI: Cache packages installed from conda

  #42580 opened Jul 17, 2021

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

  #42573 opened Jul 16, 2021

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

  #42570 opened Jul 16, 2021

• ENH: add option to DataFrame.read_excel so that excel hidden rows are not imported in the dataframe

  #42562 opened Jul 16, 2021

• ENH: write to existing sheet of excel file

  #42559 opened Jul 16, 2021

• BUG: MultiIndex assignment fails to broadcast omitted levels

  #42557 opened Jul 16, 2021

• BUG: concat 'broken' in pandas 1.3.0?

  #42552 opened Jul 15, 2021

• ENH: Series.name should return a string or None

  #42550 opened Jul 15, 2021

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

  #42549 opened Jul 15, 2021

• API: `ExtensionArray.isin` treatment of missing values

  #42545 opened Jul 15, 2021

• DOC: `pandas.json_normalize` missing from API Reference portion of documentation

  #42540 opened Jul 14, 2021

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

  #42537 opened Jul 14, 2021

• BUG: merge outer join drops rows with NaN datetime in index

  #42536 opened Jul 14, 2021

• BUG: - xlsx file not supported

  #42535 opened Jul 14, 2021

• TYP: Series.name is Hashable - should it be str?

  #42534 opened Jul 14, 2021

• ENH: Enhance printing options for stylized DataFrames

  #42533 opened Jul 14, 2021

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

  #42530 opened Jul 14, 2021

• BLD: Bump ManyLinux

  #42522 opened Jul 13, 2021

• BUG: ArrayManager changes Series.to_frame() from view to copy

  #42512 opened Jul 12, 2021

• ENH: PyPy Support

  #42509 opened Jul 12, 2021

• BUG:

  #42506 opened Jul 12, 2021

• BUG: Regression - AmbiguousTimeError creating DataFrame

  #42505 opened Jul 12, 2021

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

  #42501 opened Jul 12, 2021

• ENH: Pandas ewm with fixed window / offset

  #42499 opened Jul 12, 2021

• BUG: Unable to multi column "complex" dates (file structure not yet supported)

  #42497 opened Jul 12, 2021

• DOC: Add updated docstring for examples of `by` argument in `df.plot.hist` and `df.plot.box`

  #42492 opened Jul 12, 2021

• BUG: groupby with sort=False not respected for categorical data

  #42482 opened Jul 11, 2021

• BUG: pd.Series.rename

  #42481 opened Jul 11, 2021

• ENH: Too much faf getting csv_reader to work.

  #42479 opened Jul 10, 2021

• 1.3.0 PerformanceWarning: DataFrame is highly fragmented.

  #42477 opened Jul 10, 2021

148 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.

• REGR: passing dask arrays to Series or DataFrame

  #38645 commented on Jul 16, 2021 • 18 new comments

• Proof of concept for Copy-on-Write implementation

  #41878 commented on Jul 16, 2021 • 13 new comments

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

  #42395 commented on Jul 14, 2021 • 9 new comments

• BUG: Mitigate division with zero in roll_var

  #42459 commented on Jul 16, 2021 • 8 new comments

• Proposal for future copy / view semantics in indexing operations

  #36195 commented on Jul 16, 2021 • 7 new comments

• Fix inconsistent results for empty datasets describe

  #41716 commented on Jul 15, 2021 • 4 new comments

• REF: avoid mutating Series._values directly in setitem but defer to Manager method

  #41879 commented on Jul 12, 2021 • 4 new comments

• BUG: passing str to GroupBy.apply

  #42021 commented on Jul 16, 2021 • 4 new comments

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

  #42448 commented on Jul 16, 2021 • 4 new comments

• BUG: Regression on DataFrame.from_records

  #42456 commented on Jul 11, 2021 • 3 new comments

• Axis behaviour not consistent for df.interpolate for pad with `limit_area` passed.

  #41813 commented on Jul 14, 2021 • 3 new comments

• pandas.Dataframe.interpolate() does not extrapolate even if it is asked to, depending on interpolation method

  #31949 commented on Jul 14, 2021 • 3 new comments

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

  #41153 commented on Jul 15, 2021 • 3 new comments

• TYP: Overload concat

  #41184 commented on Jul 16, 2021 • 3 new comments

• DOC: Updates Index.any docstring from #40362

  #41726 commented on Jul 16, 2021 • 3 new comments

• BUG: excelwriter engine_kwargs fix

  #42214 commented on Jul 15, 2021 • 3 new comments

• DOC: Where is the docs of "&" "|" "^" Index operators?

  #42384 commented on Jul 10, 2021 • 2 new comments

• ENH: pd.date_range for 9am each day between two pd.Timestamp objects

  #42421 commented on Jul 12, 2021 • 2 new comments

• numpy ravel does not work on a list of DataFrames with specified column names

  #26247 commented on Jul 14, 2021 • 2 new comments

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

  #42424 commented on Jul 14, 2021 • 2 new comments

• Ambiguous behaviour when `transform` `groupby` with `NaN`s

  #17093 commented on Jul 15, 2021 • 2 new comments

• ENH: groupby.max() should not cast int to int64 but keep original data type

  #42275 commented on Jul 16, 2021 • 2 new comments

• DOC add example to reorder levels

  #42124 commented on Jul 16, 2021 • 2 new comments

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

  #41226 commented on Jul 15, 2021 • 2 new comments

• DOC: unpin numpydoc, fix validation script #39688

  #41456 commented on Jul 11, 2021 • 2 new comments

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

  #42440 commented on Jul 16, 2021 • 2 new comments

• read_excel() modifies provided types dict when accessing file with duplicate column

  #42462 commented on Jul 10, 2021 • 1 new comment

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

  #42430 commented on Jul 10, 2021 • 1 new comment

• DataFrame.sum() with mix of timedelta and IntegerNA returns NA for IntNA

  #27185 commented on Jul 10, 2021 • 1 new comment

• Indexing on series where index is output from pd.cut

  #27437 commented on Jul 10, 2021 • 1 new comment

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

  #27472 commented on Jul 10, 2021 • 1 new comment

• Adhere to the standard for dropping Python versions

  #27557 commented on Jul 10, 2021 • 1 new comment

• Inconsistent dtype changes between multi-column assignment and single-column assignment

  #27583 commented on Jul 10, 2021 • 1 new comment

• Filtering dataframe with sparse column leads to NAs in sparse column

  #27781 commented on Jul 10, 2021 • 1 new comment

• ValueError on assigning multiple NaN/None to Categorial Series when all categories are Intervals

  #27937 commented on Jul 10, 2021 • 1 new comment

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

  #27994 commented on Jul 11, 2021 • 1 new comment

• NUM: inequality with complex dtypes

  #28050 commented on Jul 11, 2021 • 1 new comment

• DOC: update groupby methods `See Also` section

  #42406 commented on Jul 11, 2021 • 1 new comment

• Inconsistent behavior when using GroupBy and pandas.Series.mode

  #25581 commented on Jul 11, 2021 • 1 new comment

• Can't install Pandas on Mac M1

  #40611 commented on Jul 11, 2021 • 1 new comment

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

  #28238 commented on Jul 11, 2021 • 1 new comment

• Misbehavior for Dataframe updates on unexisting DateTime index

  #28249 commented on Jul 11, 2021 • 1 new comment

• API: make CategoricalIndex._concat consistent with pd.concat

  #41626 commented on Jul 11, 2021 • 1 new comment

• RLS: 1.4/2.0

  #41957 commented on Jul 12, 2021 • 1 new comment

• BUG: read_json converts Numeric Strings to Numbers

  #42471 commented on Jul 13, 2021 • 1 new comment

• Feature Request: read_excel sheet_name argument

  #19842 commented on Jul 13, 2021 • 1 new comment

• BUG: segfault from json.dumps in Python 3.10

  #42130 commented on Jul 13, 2021 • 1 new comment

• read_sas fails due to unclear problems in SAS dataset

  #16615 commented on Jul 13, 2021 • 1 new comment

• BUG: `__array_ufunc__` with for functions with side-effects depends on `_data`

  #42303 commented on Jul 14, 2021 • 1 new comment

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

  #42387 commented on Jul 14, 2021 • 1 new comment

• BUG: to_sql() method inserts NULL for NaN which bypasses DEFAULT behaviour of database

  #42408 commented on Jul 15, 2021 • 1 new comment

• BUG: GroupBy.apply doesn't add group keys to index whether setting group_keys=True or not.

  #40720 commented on Jul 15, 2021 • 1 new comment

• BUG: MultiIndex block assignment introduces NaNs in data

  #40186 commented on Jul 15, 2021 • 1 new comment

• STYLE add check for future annotations

  #41901 commented on Jul 16, 2021 • 1 new comment

• TYP use typed version of namedtuple

  #40531 commented on Jul 16, 2021 • 1 new comment

• STYLE Investigate restructuredtext_lint as pre-commit hook

  #41986 commented on Jul 16, 2021 • 1 new comment

• BUG: np.argwhere on pandas series

  #35331 commented on Jul 16, 2021 • 1 new comment

• Enable server side cursors

  #40796 commented on Jul 12, 2021 • 1 new comment

• DOC: Reindexing behaviour of dataframe column-assignment missing

  #40985 commented on Jul 11, 2021 • 1 new comment

• [ArrayManager] Array version of fillna logic

  #41104 commented on Jul 12, 2021 • 1 new comment

• TYP: Fix typing in ExtensionDtype registry

  #41203 commented on Jul 14, 2021 • 1 new comment

• TYP: Typing changes for ExtensionArray.astype

  #41251 commented on Jul 14, 2021 • 1 new comment

• TYP: Typing for ExtensionArray.__getitem__

  #41258 commented on Jul 14, 2021 • 1 new comment

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

  #41373 commented on Jul 15, 2021 • 1 new comment

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

  #41488 commented on Jul 14, 2021 • 1 new comment

• BUG: Empty DataFrame(..., dtype='datetime64[ns]').quantile(..., axis=1) returns float64 dtype

  #41694 commented on Jul 12, 2021 • 1 new comment

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

  #41866 commented on Jul 10, 2021 • 1 new comment

• ENH: Add `drop_na` keyword to "to_json()" function

  #41890 commented on Jul 12, 2021 • 1 new comment

• BUG: Scalar assignment to empty dataframe with loc. Closes GH41891

  #41921 commented on Jul 15, 2021 • 1 new comment

• TST: Add tests for numeric_only default behaviour (GH41351)

  #41932 commented on Jul 13, 2021 • 1 new comment

• Updated the docstring for reset_index in frame.py

  #42013 commented on Jul 16, 2021 • 1 new comment

• Fix module name for _LoadSparseFrame

  #42020 commented on Jul 16, 2021 • 1 new comment

• Move Check for deprecated messages without sphinx directive to pre-commit

  #42128 commented on Jul 11, 2021 • 1 new comment

• DOC: added examples to align function's documentation

  #42129 commented on Jul 13, 2021 • 1 new comment

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

  #42284 commented on Jul 16, 2021 • 1 new comment

• DEPS: update setuptools min version

  #42304 commented on Jul 10, 2021 • 1 new comment

• pd.get_dummies different default return type than .str.get_dummies

  #27214 commented on Jul 10, 2021 • 0 new comments

• ExtensionArray.argsort and nargsort

  #27218 commented on Jul 10, 2021 • 0 new comments

• Ignore flattening certain keys in `json_normalize`

  #27241 commented on Jul 10, 2021 • 0 new comments

• DataFrame.__setitem__ with MultiIndex fails when expanding with new key

  #27248 commented on Jul 10, 2021 • 0 new comments

• ENH: support 'duplicated' functionality for ExtensionArrays

  #27264 commented on Jul 10, 2021 • 0 new comments

• DEPS: make a package for the ci/code_checks.sh

  #27342 commented on Jul 10, 2021 • 0 new comments

• Bug: groupby(..., observed=True) doesn't respect sort key

  #27369 commented on Jul 10, 2021 • 0 new comments

• PeriodDType should require freq argument

  #27388 commented on Jul 10, 2021 • 0 new comments

• TYPING: Unreachable code

  #27396 commented on Jul 10, 2021 • 0 new comments

• ENH: Allow index names to be included in itertuples() result

  #27407 commented on Jul 10, 2021 • 0 new comments

• Give pandas.core.groupby.generic.DataFrameGroupBy __str__/_repr_pretty_/__repr__ methods

  #27442 commented on Jul 10, 2021 • 0 new comments

• ENH: allow EA to register types for is_scalar

  #27462 commented on Jul 10, 2021 • 0 new comments

• Add 'nice' date-time x-axis labels for non-regular time series plots

  #27509 commented on Jul 10, 2021 • 0 new comments

• use keyword only args where appropriate

  #27544 commented on Jul 10, 2021 • 0 new comments

• `groupby().first()` docs should explain distinction between nth and first

  #27578 commented on Jul 10, 2021 • 0 new comments

• BUG: MultiIndex Slice returns incorrect slice (compared to .xs())

  #27591 commented on Jul 10, 2021 • 0 new comments

• to_dict() on a boolean series sometimes returns numpy types instead of Python types

  #27616 commented on Jul 10, 2021 • 0 new comments

• Add comment char parameter to to_csv method

  #27637 commented on Jul 10, 2021 • 0 new comments

• API: Meta-issue for making consistent API's to refer to column names and index names

  #27652 commented on Jul 10, 2021 • 0 new comments

• BUG: pandas.cut should optionally allow overlapping IntervalIndex bins

  #27654 commented on Jul 10, 2021 • 0 new comments

• API: many custom errors / warnings are not exposed in pandas.errors

  #27656 commented on Jul 10, 2021 • 0 new comments

• dataframe.fillna with df fails in a specific case

  #27672 commented on Jul 10, 2021 • 0 new comments

• Option to raise on dtype coercion in append / concat

  #27678 commented on Jul 10, 2021 • 0 new comments

• Suppress UnicodeEncodeError when executing to_csv method

  #27750 commented on Jul 10, 2021 • 0 new comments

• Min/max does not work for dates with timezones if there are missing values in the data frame

  #27794 commented on Jul 10, 2021 • 0 new comments

• BUG: pivot_table fails with aggfunc='size' and margins=True

  #27799 commented on Jul 10, 2021 • 0 new comments

• BUG:No xlabel for twinx axes in subploted figures

  #27812 commented on Jul 10, 2021 • 0 new comments

• Document DataFrame._constructor_sliced-like property in the public API?

  #27824 commented on Jul 10, 2021 • 0 new comments

• Dispatch pd.is_na for scalar extension value

  #27825 commented on Jul 10, 2021 • 0 new comments

• New pandas website

  #27870 commented on Jul 10, 2021 • 0 new comments

• Standardize pandas distribution lists

  #27903 commented on Jul 10, 2021 • 0 new comments

• API: when to cast list-like to ndarray, check len match

  #27911 commented on Jul 10, 2021 • 0 new comments

• xtick label have wrong position.

  #27931 commented on Jul 10, 2021 • 0 new comments

• Fix PR02 issues in docstrings

  #27976 commented on Jul 10, 2021 • 0 new comments

• DOC: How to split a PR

  #40916 commented on Jul 10, 2021 • 0 new comments

• Infer ExtensionDtype based on object

  #27995 commented on Jul 11, 2021 • 0 new comments

• Create correct xlim for ts plot and update datetimelike tests

  #28021 commented on Jul 11, 2021 • 0 new comments

• [Feature Request] pd.DataFrame.schema iterable

  #28022 commented on Jul 11, 2021 • 0 new comments

• Bug: Resample removes timezone localization from Period.start_time

  #28039 commented on Jul 11, 2021 • 0 new comments

• ENH: Please provide "universal2" wheels for macOS

  #39053 commented on Jul 11, 2021 • 0 new comments

• TypeError: can only concatenate list (not "int") to list

  #28261 commented on Jul 11, 2021 • 0 new comments

• Casting bool to object during join

  #28269 commented on Jul 11, 2021 • 0 new comments

• `series.str.cat(series.str)` is concatenating only the largest string

  #28277 commented on Jul 11, 2021 • 0 new comments

• Various methods don't call call __finalize__

  #28283 commented on Jul 11, 2021 • 0 new comments

• concat and append ignore level names and order in multi-level index DataFrames

  #28311 commented on Jul 11, 2021 • 0 new comments

• Problem with MultiIndex upsampling / resampling

  #28313 commented on Jul 11, 2021 • 0 new comments

• .infer_objects() behavior is unintuitive when used with schemaless inputs

  #28318 commented on Jul 11, 2021 • 0 new comments

• DataFrame resample and Grouper ,Why are the results different?

  #28331 commented on Jul 11, 2021 • 0 new comments

• `pivot_table` args `index` and `observed` don't play well

  #28372 commented on Jul 11, 2021 • 0 new comments

• Pandas Enhancement Proposals?

  #28568 commented on Jul 11, 2021 • 0 new comments

• ENH: new orient setting for read_json to support common API format

  #39913 commented on Jul 11, 2021 • 0 new comments

• API: consider deprecating DataFrame.hist in favor of DataFrame.plot.hist

  #11053 commented on Jul 12, 2021 • 0 new comments

• Nullable Int64 column changes type after some (cumsum) operations

  #28385 commented on Jul 12, 2021 • 0 new comments

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

  #42463 commented on Jul 12, 2021 • 0 new comments

• DEPR: log of deprecations in 1.x (to be removed in 2.0)

  #30228 commented on Jul 14, 2021 • 0 new comments

• BUG: pd.cut raises with duplicated index and `include_lowest=True`

  #42185 commented on Jul 14, 2021 • 0 new comments

• TYP: Numpy compatibility of definition of "array like"

  #41807 commented on Jul 14, 2021 • 0 new comments

• Fix validation error type `SA04` and check in CI

  #25337 commented on Jul 15, 2021 • 0 new comments

• ENH: Upgrade sql module for SQLAlchemy 2.0 #40686

  #40791 commented on Jul 14, 2021 • 0 new comments

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

  #41893 commented on Jul 14, 2021 • 0 new comments

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

  #41946 commented on Jul 14, 2021 • 0 new comments

• [WIP] ENH: `Styler.apply(map)_header` made compatible with `Styler.to_latex`

  #41993 commented on Jul 13, 2021 • 0 new comments

• [WIP] ENH: `Styler.apply(map)_header` made compatible with `Styler.to_excel` (for non-MultiIndex)

  #41995 commented on Jul 13, 2021 • 0 new comments

• PERF: groupsort_indexer contiguity

  #42031 commented on Jul 12, 2021 • 0 new comments

• BUG: fix `Series.argsort`

  #42090 commented on Jul 13, 2021 • 0 new comments

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

  #42140 commented on Jul 14, 2021 • 0 new comments

• STYLE fixup cython linting

  #42142 commented on Jul 11, 2021 • 0 new comments

• Can't combine DatetimeIndex MultiIndex with numeric MultiIndex

  #42143 commented on Jul 11, 2021 • 0 new comments

• DOC: add example to reorder levels

  #42213 commented on Jul 16, 2021 • 0 new comments

• ENH: add if_sheet_exists='write_to' to ExcelWriter

  #42222 commented on Jul 12, 2021 • 0 new comments

• DOC: create folders in to_csv #24306

  #42250 commented on Jul 12, 2021 • 0 new comments

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

  #42329 commented on Jul 15, 2021 • 0 new comments