1 Release published by 1 person

• v1.4.2 Pandas 1.4.2

  published Apr 2, 2022

31 Pull requests merged by 18 people

• Add 'color' and 'size' to arguments

  #44856 merged Apr 7, 2022

• DOC: Fix errors detected by sphinx-lint

  #46586 merged Apr 7, 2022

• BUG: Join ValueError for DataFrame list

  #46630 merged Apr 7, 2022

• DOC: generate docs for the `Series.dt.isocalendar()` method.

  #46674 merged Apr 7, 2022

• Fix a few test failures on big-endian systems

  #46681 merged Apr 7, 2022

• TST: add validation checks on levels keyword from pd.concat

  #46654 merged Apr 7, 2022

• Backport PR #46663 on branch 1.4.x (CI/DOC: pin pydata-sphinx-theme to 0.8.0)

  #46667 merged Apr 7, 2022

• TST/CI: simplify geopandas downstream test to not use fiona

  #46665 merged Apr 6, 2022

• CI/DOC: pin pydata-sphinx-theme to 0.8.0

  #46663 merged Apr 6, 2022

• BUG: added finalize to explode, GH28283

  #46629 merged Apr 6, 2022

• Remove references to previously-vendored Sphinx extensions

  #46624 merged Apr 6, 2022

• Backport PR #46647 on branch 1.4.x (CI/DOC: Unpin jinja2)

  #46649 merged Apr 6, 2022

• CI/DOC: Unpin jinja2

  #46647 merged Apr 5, 2022

• DOC: .bfill() (#46631)

  #46642 merged Apr 5, 2022

• TST: Add test with large shape to check_below_min_count

  #46534 merged Apr 5, 2022

• BUG: pd.concat with identical key leads to multi-indexing error

  #46546 merged Apr 5, 2022

• CI: Remove grep from asv call (using strict parameter instead)

  #46633 merged Apr 5, 2022

• ENH: consistency of input args for boundaries - pd.interval_range

  #46355 merged Apr 4, 2022

• TYP: fix hashable keys for pd.concat

  #46608 merged Apr 4, 2022

• TYP: rename

  #46428 merged Apr 3, 2022

• CLN/TYP: assorted

  #46568 merged Apr 3, 2022

• CI/TST: Make test_vector_resize more deterministic

  #46602 merged Apr 3, 2022

• CI: Simplify call to asv

  #46599 merged Apr 3, 2022

• REF: Create pandas/core/arrays/arrow

  #46591 merged Apr 3, 2022

• Backport PR #46609 on branch 1.4.x (DOC: Start v1.4.3 release notes)

  #46612 merged Apr 2, 2022

• DOC: Start v1.4.3 release notes

  #46609 merged Apr 2, 2022

• Backport PR #46605 on branch 1.4.x (DOC: 1.4.2 release date)

  #46607 merged Apr 1, 2022

• DOC: 1.4.2 release date

  #46605 merged Apr 1, 2022

• DOC: moved release note for #46087

  #46604 merged Apr 1, 2022

• Backport PR #46567 on branch 1.4.x (BUG: groupby().rolling(freq) with monotonic dates within groups #46065 )

  #46592 merged Apr 1, 2022

• BUG: groupby().rolling(freq) with monotonic dates within groups #46065

  #46567 merged Mar 31, 2022

21 Pull requests opened by 21 people

• WIP/BUG: algorithms.factorize moves null values when sort=False

  #46601 opened Apr 1, 2022

• TYP: na_value

  #46603 opened Apr 1, 2022

• Add Windows GHA build

  #46611 opened Apr 2, 2022

• BUG: SeriesGroupBy apply wrong name

  #46623 opened Apr 3, 2022

• Fix NaN bug in ujson

  #46628 opened Apr 3, 2022

• REGR: Replace changes the dtype of other columns

  #46636 opened Apr 4, 2022

• TYP: tighten return type in function any

  #46638 opened Apr 4, 2022

• homogeneous Period targets bug fix

  #46640 opened Apr 4, 2022

• added test for replace with value none

  #46641 opened Apr 5, 2022

• BUG: DataFrame.dropna must not allow to set both how= and thresh= parameters

  #46644 opened Apr 5, 2022

• TST: Regression test added for Timedelta

  #46645 opened Apr 5, 2022

• BUG/TST/DOC: added finalize to melt, GH28283

  #46648 opened Apr 5, 2022

• DOC: clarified read_csv example

  #46650 opened Apr 6, 2022

• DOC: fix SA04 errors flagged by validate_docstrings.py and add SA04 t…

  #46652 opened Apr 6, 2022

• BUG: df.nsmallest get wrong results when NaN in the sorting column

  #46656 opened Apr 6, 2022

• TST: added test for joining dataframes with MultiIndex containing dates

  #46660 opened Apr 6, 2022

• BUG: Fix infinite recursion loop when pivot of IntervalTree is ±inf

  #46664 opened Apr 6, 2022

• Allow using datetime64[ns, UTC] in IntervalDtype

  #46666 opened Apr 6, 2022

• Test added IntervalIndex_get_indexer_non_unique

  #46668 opened Apr 6, 2022

• Backport PR #46674 on branch 1.4.x (DOC: generate docs for the `Series.dt.isocalendar()` method.)

  #46686 opened Apr 7, 2022

• ENH: implement non-nano Timedelta scalar

  #46688 opened Apr 7, 2022

16 Issues closed by 7 people

• BUG: Pandas plot does not accept Columns for color keyword

  #44670 closed Apr 7, 2022

• BUG: join: ValueError: Indexes have overlapping values

  #46396 closed Apr 7, 2022

• QST: pandas multi-level index How to add a new row index, not at the end, but at the original location

  #46679 closed Apr 7, 2022

• TST: add validation checks on levels keyword from pd.concat

  #46653 closed Apr 7, 2022

• CI: jinja2 release broke docs build

  #46514 closed Apr 5, 2022

• DOC: simply method='bfill'?

  #46631 closed Apr 5, 2022

• BUG: ValueError: Cannot convert non-finite values (NA or inf) to integer only when DF exceed certain size

  #35227 closed Apr 5, 2022

• BUG: Result of `pd.concat([], keys=)` with identical key has trouble with MultiIndex `.loc[]`

  #46519 closed Apr 5, 2022

• RLS: 1.4.2

  #45961 closed Apr 4, 2022

• ENH: alias groupby to group_by.

  #46626 closed Apr 3, 2022

• BUG: truth value error raised from 'to_series' in core/indexes/datetime.py

  #46621 closed Apr 3, 2022

• ENH: Add alias for `value_counts()` named `count_values()`

  #46614 closed Apr 2, 2022

• CI: Increase GitHub Actions resources

  #46600 closed Apr 1, 2022

• API/DISC: engine="numba" (computational API) location in reductions functions or constructors

  #43886 closed Apr 1, 2022

• PERF: Investigate numba parallel=True performance

  #45855 closed Apr 1, 2022

• BUG: groupby().rolling("freq") validation raises even if dates are sorted within each group

  #46061 closed Mar 31, 2022

46 Issues opened by 38 people

• CLN find stacklevel inside deprecate_nonkeyword_arguments

  #46687 opened Apr 7, 2022

• BUG/DOC: Styler `apply`/`format` do not accept callable `subset`

  #46685 opened Apr 7, 2022

• BUG: apply on DataFrame results in `TypeError: copy() missing 1 required positional argument: 'self'`

  #46684 opened Apr 7, 2022

• BUG: Segmentation fault when JSON serializing a PeriodIndex

  #46683 opened Apr 7, 2022

• Add interactive terminal to pandas website

  #46682 opened Apr 7, 2022

• ENH: Support Python 3.11

  #46680 opened Apr 7, 2022

• BUG: index_col=False does not work

  #46678 opened Apr 7, 2022

• BUG: DataFrame.fillna() doesn't work for 0/0 with Int64Dtype

  #46677 opened Apr 7, 2022

• BUG: `SeriesGroupBy.value_counts` ignore NaNs of groupby column

  #46676 opened Apr 7, 2022

• Index is being materialized in `pd.concat` when `axis=0`

  #46675 opened Apr 6, 2022

• BUG: Incosistent handling of null types by PeriodIndex

  #46673 opened Apr 6, 2022

• BUG: `dtype` not being preserved for `replace` on a `CategoricalDtype`

  #46672 opened Apr 6, 2022

• BUG: NotImplementedError: Prefix not defined

  #46671 opened Apr 6, 2022

• DOC: methods available only for `SeriesGroupBy` objects

  #46670 opened Apr 6, 2022

• BUG: concat() changes 'boolean' column to 'object' column

  #46662 opened Apr 6, 2022

• BUG: to_sql with if_exists='replace' wrongly recreates dropped table

  #46661 opened Apr 6, 2022

• BUG: Different types of group keys when grouping over one or multiple columns

  #46659 opened Apr 6, 2022

• BUG: infinite recursion loop when inf interval bounds lead to inf pivot values in an IntervalTree

  #46658 opened Apr 6, 2022

• QST: pd.cut duplicate parameter

  #46657 opened Apr 6, 2022

• ENH: `.pipe()` on `DataFrameGroupBy`

  #46655 opened Apr 6, 2022

• TST/TYP: make pandas/tests private

  #46651 opened Apr 6, 2022

• BUG: Make categories setitem error more readable

  #46646 opened Apr 5, 2022

• Meta issue: CI refactoring

  #46643 opened Apr 5, 2022

• ENH:

  #46635 opened Apr 4, 2022

• BUG: Replace changes the dtype of other columns

  #46634 opened Apr 4, 2022

• BUG: Getting different column types for DataFrame with read_sql_query and read_sql_table

  #46632 opened Apr 4, 2022

• BUG: Pandas's ujson module incorrectly returns None when it reads NaN.

  #46627 opened Apr 3, 2022

• ENH: Join - Add a parameter to check for duplicates

  #46622 opened Apr 3, 2022

• DOC: documentation on `.loc[]` needs some clarification

  #46620 opened Apr 3, 2022

• BUG: Pandas rolling removes imaginary part of complex

  #46619 opened Apr 3, 2022

• BUG: test_binops fails in multiple variations on 1.4.2

  #46618 opened Apr 2, 2022

• TYP: how to annotate DataFrame.__getitem__

  #46616 opened Apr 2, 2022

• DOC: can't switch to the docs for a different version of pandas

  #46615 opened Apr 2, 2022

• ENH: Interval.__contains__(self, other: Interval)

  #46613 opened Apr 2, 2022

• RLS: 1.4.3

  #46610 opened Apr 2, 2022

• BUG: DataFrame.replace with dict doesn't work when value=None

  #46606 opened Apr 1, 2022

• CI: Add durations to benchmarks build

  #46598 opened Apr 1, 2022

• Make test_localization tests execute on windows targets

  #46597 opened Apr 1, 2022

• BUG: custom callable in to_sql stopped working with pandas 1.4.0

  #46596 opened Apr 1, 2022

• BUG: `tm.set_locale` does not correctly set back the initial locale when locale.LC_ALL is used. `tm.can_set_locale` is impacted by the leak

  #46595 opened Apr 1, 2022

• BUG: np.where cast Int64 to object

  #46594 opened Apr 1, 2022

• DOC: .loc improvement

  #46593 opened Apr 1, 2022

• BUG: `pd.eval` not working when using `str.contains`: `TypeError: unhashable type: 'Series'`

  #46590 opened Apr 1, 2022

• BUG: df.nsmallest get wrong results when row contains `NaN`

  #46589 opened Apr 1, 2022

• BUG: `Series.map` is ignoring the `na_action` keyword

  #46588 opened Mar 31, 2022

• API/DES: Non-Nanosecond Tracker

  #46587 opened Mar 31, 2022

79 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.

• DEPR: non-keyword arguments in any

  #44896 commented on Apr 7, 2022 • 28 new comments

• ENH: Implement DataFrame exchange protocol

  #46141 commented on Apr 4, 2022 • 10 new comments

• CI: Refactor sdist workflow and add setup-python action

  #46538 commented on Apr 5, 2022 • 10 new comments

• Parallel build_ext might fail due to file collisions

  #30873 commented on Apr 6, 2022 • 8 new comments

• TYP: Fix core/groupby/generic.py type ignores

  #46521 commented on Apr 6, 2022 • 8 new comments

• Add missing __finalize__ calls in indexers/iterators

  #46101 commented on Apr 6, 2022 • 7 new comments

• Fixed Unicode decoding error in `Period.strftime` when a locale-specific directive is used

  #46405 commented on Apr 7, 2022 • 7 new comments

• BUG: Unexpected change of behavior on DataFrame type float32 between pandas versions.

  #46552 commented on Apr 6, 2022 • 6 new comments

• change the index in DataFrame.to_csv to False as default?

  #46583 commented on Apr 3, 2022 • 4 new comments

• ENH: Rolling mode

  #36861 commented on Apr 1, 2022 • 3 new comments

• API: Should apply be smart?

  #39209 commented on Apr 2, 2022 • 3 new comments

• BUG: grouped.last() will sometimes turn a boolean column into Int64

  #46409 commented on Apr 5, 2022 • 3 new comments

• BUG:error in reading a boolean column with blanks from excel file #45903

  #46374 commented on Apr 5, 2022 • 3 new comments

• Added the round( ) function to avoid error while multiplication of float numbers issue: #46362

  #46388 commented on Apr 5, 2022 • 3 new comments

• ENH: Inference for ExtensionArray and ExtensionDtype.type

  #45399 commented on Apr 1, 2022 • 2 new comments

• BUG: IntervalIndex._can_hold_na wrong for integer-backed

  #45720 commented on Apr 1, 2022 • 2 new comments

• BUG: Unexpected jupyter notebook behavior when assigning an array.array variable

  #46268 commented on Apr 5, 2022 • 2 new comments

• ER: should constructors check and raise if big-endian dtypes are detected?

  #4737 commented on Apr 6, 2022 • 2 new comments

• BUG: ArrowStringArray.__setitem__ breaks views

  #45419 commented on Apr 7, 2022 • 2 new comments

• BUG: DataFrame.dropna must not allow to set both how= and thresh= parameters

  #46575 commented on Apr 7, 2022 • 2 new comments

• Initial draft: from_dummies

  #41902 commented on Apr 3, 2022 • 2 new comments

• ENH: pd.read_html argument to extract hrefs along with text from cells

  #45973 commented on Apr 7, 2022 • 2 new comments

• DOC: added examples for index assignment using Series

  #46064 commented on Apr 6, 2022 • 2 new comments

• Enable server side cursors

  #46166 commented on Apr 1, 2022 • 2 new comments

• DOC: migrate from sphinx-panels to sphinx-design

  #46227 commented on Apr 5, 2022 • 2 new comments

• WEB: Add benchmarks grant write up as a blog post

  #46483 commented on Apr 1, 2022 • 2 new comments

• BUG: Unexpected IndexingError when filtering with .loc

  #46551 commented on Mar 31, 2022 • 1 new comment

• BUG: prod and groupby.prod behave differently

  #46573 commented on Mar 31, 2022 • 1 new comment

• DataFrame.copy(deep=True) is not a deep copy of the index

  #19862 commented on Apr 1, 2022 • 1 new comment

• ENH: Control the escape scope of read_csv's escapechar

  #33720 commented on Apr 1, 2022 • 1 new comment

• BUG: pd.cut regression since version 1.4.0 when operating on datetime

  #46218 commented on Apr 1, 2022 • 1 new comment

• BUG: FutureWarning for pandas datetime dtype series strftime with all NA values

  #45858 commented on Apr 1, 2022 • 1 new comment

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

  #45637 commented on Apr 1, 2022 • 1 new comment

• BUG: concat doesn't preserve attrs (as alternative for append deprecated in 1.4)

  #45824 commented on Apr 1, 2022 • 1 new comment

• ENH: Method for selecting columns from DataFrameGroupBy (and maybe DataFrame)

  #40322 commented on Apr 2, 2022 • 1 new comment

• STYLE: add check to keep `black` version in sync between `.pre-commit-config.yaml` and `environment.yaml`

  #46561 commented on Apr 2, 2022 • 1 new comment

• Adding (Insert or update if key exists) option to `.to_sql`

  #14553 commented on Apr 3, 2022 • 1 new comment

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

  #25337 commented on Apr 4, 2022 • 1 new comment

• BUG: "ValueError: Must provide strings." when using "string" as dtype

  #42918 commented on Apr 4, 2022 • 1 new comment

• BUG: Cut fails when number of bins is more than 102 on a 32-bit machine.

  #45591 commented on Apr 4, 2022 • 1 new comment

• Consider cibuildwheel for building wheels?

  #44027 commented on Apr 4, 2022 • 1 new comment

• Incorrect dtype for concat with empty float and datetime columns

  #32934 commented on Apr 5, 2022 • 1 new comment

• BUG: IntervalIndex.astype("category") doesn't preserve exact interval dtype in categories

  #38316 commented on Apr 5, 2022 • 1 new comment

• BUG: Binary operations with empty string arrays produce

  #46332 commented on Apr 5, 2022 • 1 new comment

• Inconsistent behavior for df.replace() with NaN, NaT and None

  #29024 commented on Apr 5, 2022 • 1 new comment

• DOC: Unclear documentation for Period Construction

  #4591 commented on Apr 5, 2022 • 1 new comment

• Add generic buffer (s3) support to read_hdf

  #31902 commented on Apr 6, 2022 • 1 new comment

• ENH: GroupBy.get_group should accept lists with multiple grouping keys

  #44303 commented on Apr 7, 2022 • 1 new comment

• BUG: grouping with categorical interval columns

  #34164 commented on Apr 7, 2022 • 1 new comment

• Join several dataframes with MultiIndex containing dates raises ValueError

  #33692 commented on Apr 7, 2022 • 1 new comment

• BUG: Series.replace with to_replace dict and value=None, nonsensical error message

  #46004 commented on Apr 7, 2022 • 1 new comment

• DOC: Additional Items for the Cheat Sheet

  #43036 commented on Apr 4, 2022 • 1 new comment

• added test to indexing on groupby, #32464

  #44046 commented on Apr 6, 2022 • 1 new comment

• ENH: Implement multi-column `DataFrame.quantiles`

  #44301 commented on Apr 6, 2022 • 1 new comment

• PERF: avoid double copy in `to_numpy` functions if `np.asarray` is used

  #45188 commented on Apr 7, 2022 • 1 new comment

• ENH: add NDArrayBackedExtensionArray to public API

  #45544 commented on Apr 7, 2022 • 1 new comment

• Implement nested types: Add StructDtype and StructArray

  #45745 commented on Apr 3, 2022 • 1 new comment

• ENH: Updated read_html to add option

  #46075 commented on Apr 6, 2022 • 1 new comment

• Bug/45740 stack_multi_columns extension array downcast

  #46095 commented on Apr 6, 2022 • 1 new comment

• Adding overwrite or ignore behavior for row conflicts.

  #46232 commented on Apr 6, 2022 • 1 new comment

• DOC: Add TextFileReader to docs

  #46308 commented on Apr 4, 2022 • 1 new comment

• TYP: Index.join

  #46518 commented on Apr 3, 2022 • 1 new comment

• ENH: consistency of input args for boundaries - Interval

  #46522 commented on Apr 5, 2022 • 1 new comment

• BUG: Series.astype is unable to handle NaN

  #46377 commented on Mar 31, 2022 • 0 new comments

• ENH: Convert a string column of times (hour:min) to datetime without date

  #46291 commented on Mar 31, 2022 • 0 new comments

• CI: Numpy 1.22 caused CI to fail

  #45182 commented on Apr 1, 2022 • 0 new comments

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

  #46297 commented on Apr 2, 2022 • 0 new comments

• ENH: groupby(...).agg should only accept reducers

  #35725 commented on Apr 2, 2022 • 0 new comments

• BUG: Small numbers in scientific notation do not show the right significant figures in DataFrame.

  #46257 commented on Apr 2, 2022 • 0 new comments

• ENH: consistency of input args for boundaries

  #40245 commented on Apr 4, 2022 • 0 new comments

• SeriesGroupBy.apply results in wrong name when there is a single group

  #46369 commented on Apr 5, 2022 • 0 new comments

• Various methods don't call call __finalize__

  #28283 commented on Apr 6, 2022 • 0 new comments

• Grouping by all columns of an empty DataFrame should produce MultiIndex, but doesn't

  #32464 commented on Apr 6, 2022 • 0 new comments

• ENH: add kwargs `rename` to `Styler.format_index` for overwriting index labels

  #45288 commented on Apr 5, 2022 • 0 new comments

• BUG: Convert <br> to space in `pd.read_html`

  #45972 commented on Apr 7, 2022 • 0 new comments

• Bug fix - GroupBy.describe produces inconsistent results for empty datasets

  #46162 commented on Apr 4, 2022 • 0 new comments

• DOC: Added plt.show() at the end of each necessary block

  #46231 commented on Apr 7, 2022 • 0 new comments

• TST: Additional tests to iloc setitem

  #46419 commented on Apr 5, 2022 • 0 new comments

• ENH: use same value counts for roll_var to remove floating point artifacts

  #46431 commented on Apr 1, 2022 • 0 new comments