Insights: pandas-dev/pandas

113 Pull requests merged by 24 people

• Backport PR #51658 on branch 2.0.x (ENH: Improve replace lazy copy handling)

  #51679 merged Feb 27, 2023

• ENH: Improve replace lazy copy handling

  #51658 merged Feb 27, 2023

• DOC: fix EX02 errors in docstrings

  #51614 merged Feb 27, 2023

• CI: Trigger preview of the web/docs

  #50899 merged Feb 27, 2023

• STYLE: replace unwanted-patterns-strings-to-concatenate with ruff

  #51613 merged Feb 27, 2023

• Backport PR #51517 on branch 2.0.x (PERF: maybe_convert_objects convert_numeric=False)

  #51661 merged Feb 27, 2023

• Backport PR #51660 on branch 2.0.x (DEPS: Bump Cython to 0.29.33)

  #51663 merged Feb 27, 2023

• DEPS: Bump Cython to 0.29.33

  #51660 merged Feb 27, 2023

• WEB: Sort and fix link to under discussions PDEPs

  #51656 merged Feb 27, 2023

• Backport PR #51654 on branch 2.0.x (DOC: Remove 1.5.4 release notes)

  #51655 merged Feb 27, 2023

• WEB: Add code highlighting in PDEPs and render tables correctly

  #51458 merged Feb 26, 2023

• Backport PR #50918 on branch 2.0.x (ENH: Optimize replace to avoid copying when not necessary)

  #51652 merged Feb 26, 2023

• DOC: Remove 1.5.4 release notes

  #51654 merged Feb 26, 2023

• WEB: Fix blog links

  #51649 merged Feb 26, 2023

• Backport PR #51239 on branch 2.0.x (API / CoW: constructing DataFrame from DataFrame/BlockManager creates lazy copy)

  #51650 merged Feb 26, 2023

• ENH: Optimize replace to avoid copying when not necessary

  #50918 merged Feb 26, 2023

• API / CoW: constructing DataFrame from DataFrame/BlockManager creates lazy copy

  #51239 merged Feb 26, 2023

• CI: Don't run tests when web folder is updated

  #51638 merged Feb 26, 2023

• Backport PR #51626 on branch 2.0.x (DOC: Improvements to groupby.rst)

  #51642 merged Feb 26, 2023

• DOC: Improvements to groupby.rst

  #51626 merged Feb 26, 2023

• Backport PR #51411 on branch 2.0.x (ENH: Optimize CoW for fillna with ea dtypes)

  #51639 merged Feb 26, 2023

• ENH: Optimize CoW for fillna with ea dtypes

  #51411 merged Feb 25, 2023

• PERF: DataFrame.where for EA dtype mask

  #51574 merged Feb 25, 2023

• ENH: use native filesystem (if available) for read_orc

  #51623 merged Feb 25, 2023

• BUG: Series.any and Series.all for empty or all-null pyarrow-backed dtypes

  #51631 merged Feb 25, 2023

• REF: remove iterate_slices

  #51622 merged Feb 25, 2023

• Backport PR #51571 on branch 2.0.x (ENH: DataFrame.fillna making deep copy for dict arg)

  #51636 merged Feb 25, 2023

• BUG: TDI divison giving bogus .freq

  #51575 merged Feb 25, 2023

• PERF: maybe_convert_objects convert_numeric=False

  #51517 merged Feb 25, 2023

• DOC: Update doc of parquet compression parameter

  #51554 merged Feb 25, 2023

• ENH: DataFrame.fillna making deep copy for dict arg

  #51571 merged Feb 25, 2023

• DOC trying to improve readability of example

  #51634 merged Feb 25, 2023

• PERF: ArrowExtensionArray.isna when zero nulls or all nulls

  #51630 merged Feb 25, 2023

• Backport PR #51627 on branch 2.0.x (BUG: Change default of group_keys to True)

  #51632 merged Feb 25, 2023

• BUG: Change default of group_keys to True

  #51627 merged Feb 25, 2023

• BUG: Fix GroupBy.idxmin/idxmax retrun wrong type on empty

  #51423 merged Feb 25, 2023

• BUG: Timestamp.round overflows

  #51494 merged Feb 25, 2023

• Backport PR #51542 on branch 2.0.x (API: ArrowExtensionArray.value_counts returns pyarrow.int64 type)

  #51620 merged Feb 25, 2023

• API: ArrowExtensionArray.value_counts returns pyarrow.int64 type

  #51542 merged Feb 24, 2023

• WEB: Obfuscating workgroup email addresses to fix Issue #51209

  #51266 merged Feb 24, 2023

• Backport PR #51514 on branch 2.0.x (DOC: object_dtype_tzaware_strings.atype(dt64) raises)

  #51619 merged Feb 24, 2023

• Backport PR #51585 on branch 2.0.x (BUG: not broadcasting when setting empty object)

  #51618 merged Feb 24, 2023

• Backport PR #51605 on branch 2.0.x (REGR: MultiIndex.isin with empty iterable raising)

  #51617 merged Feb 24, 2023

• DOC: object_dtype_tzaware_strings.atype(dt64) raises

  #51514 merged Feb 24, 2023

• DOCS: fix category docs

  #51579 merged Feb 24, 2023

• BUG: not broadcasting when setting empty object

  #51585 merged Feb 24, 2023

• TST/bug: add test for NaT in Categorical.isin with empty string

  #51587 merged Feb 24, 2023

• REF: de-duplicate precision_from_unit attempt 2

  #51594 merged Feb 24, 2023

• REGR: MultiIndex.isin with empty iterable raising

  #51605 merged Feb 24, 2023

• BUG: groupby.agg doesn't include grouping columns in result when selected

  #51398 merged Feb 24, 2023

• PERF: Bypass chunking/validation logic in StringDtype__from_arrow__

  #47781 merged Feb 24, 2023

• Remove Sequence[str] as type used in DataFrame.to_string()

  #47233 merged Feb 24, 2023

• Fix EX02 error:is_{integer,string}_dtype

  #51610 merged Feb 24, 2023

• Backport PR #51548 on branch 2.0.x (BUG: parsing pyarrow dtypes corner case)

  #51606 merged Feb 24, 2023

• CLN: Remove read_orc dtype checking

  #51604 merged Feb 24, 2023

• DOC: Add orient=table explanation to read_json doc

  #51601 merged Feb 24, 2023

• Backport PR #49228 on branch 2.0.x (CLN/FIX/PERF: Don't buffer entire Stata file into memory)

  #51600 merged Feb 24, 2023

• BUG: Series.corr/cov raising with masked dtype

  #51422 merged Feb 24, 2023

• BUG: parsing pyarrow dtypes corner case

  #51548 merged Feb 23, 2023

• TST: Make tests less stateful

  #51598 merged Feb 23, 2023

• Backport PR #51545 on branch 2.0.x (TST/CLN: Remove unnecessary pyarrow version checking)

  #51595 merged Feb 23, 2023

• CLN/FIX/PERF: Don't buffer entire Stata file into memory

  #49228 merged Feb 23, 2023

• DOC Fix EX01 issues in docstrings

  #51593 merged Feb 23, 2023

• TST/CLN: Remove unnecessary pyarrow version checking

  #51545 merged Feb 23, 2023

• CI, ENH: Check each minimum dependency is enforced in *.yaml and environment.yml

  #51189 merged Feb 23, 2023

• Backport PR #51573 on branch 2.0.x (CI: Fix failure due to warning)

  #51586 merged Feb 23, 2023

• Backport PR #51568 on branch 2.0.x (ENH: Series.fillna with empty argument making deep copy)

  #51580 merged Feb 23, 2023

• DOC: fix EX02 errors in docstrings

  #51578 merged Feb 23, 2023

• Revert "REF: de-duplicate precision_from_unit"

  #51584 merged Feb 23, 2023

• CI: Fix failure due to warning

  #51573 merged Feb 23, 2023

• Backport PR #51312 on branch 2.0.x (CI/TST: Enable -W error:::pandas in pyproject.toml)

  #51570 merged Feb 23, 2023

• PERF: DataFrame.first_valid_index/last_valid_index for EA dtypes

  #51549 merged Feb 23, 2023

• ENH: Series.fillna with empty argument making deep copy

  #51568 merged Feb 23, 2023

• Backport PR #51430 on branch 2.0.x (BUG: transpose not respecting CoW)

  #51564 merged Feb 23, 2023

• Backport PR #51566 on branch 2.0.x (DOC: Clean whatsnew links)

  #51572 merged Feb 23, 2023

• REF: de-duplicate precision_from_unit

  #51483 merged Feb 23, 2023

• DOC Fix EX01 issues in docstrings

  #51561 merged Feb 23, 2023

• DOC: Clean whatsnew links

  #51566 merged Feb 23, 2023

• Auto Backport PR #50964 on branch 2.0.x (TST: Test ArrowExtensionArray with decimal types)

  #51562 merged Feb 22, 2023

• CI/TST: Enable -W error:::pandas in pyproject.toml

  #51312 merged Feb 22, 2023

• BUG: transpose not respecting CoW

  #51430 merged Feb 22, 2023

• PERF: DataFrame.clip / Series.clip

  #51472 merged Feb 22, 2023

• Backport PR #51469 on branch 2.0.x (DOC: Remove 1.0.0 versionadded/versionchanged)

  #51558 merged Feb 22, 2023

• TST: Test ArrowExtensionArray with decimal types

  #50964 merged Feb 22, 2023

• DOC: Remove 1.0.0 versionadded/versionchanged

  #51469 merged Feb 22, 2023

• Backport PR #51541 on branch 2.0.x (ENH: pyarrow dont raise on division by zero)

  #51553 merged Feb 22, 2023

• Backport PR #51552 on branch 2.0.x (DOC: Cleanup CoW dev docs)

  #51556 merged Feb 22, 2023

• DOC: Cleanup CoW dev docs

  #51552 merged Feb 22, 2023

• STYLE ruff: enable PIE

  #51434 merged Feb 22, 2023

• DOC: fix EX02 docstring errors for three docstrings

  #51550 merged Feb 22, 2023

• ENH: pyarrow dont raise on division by zero

  #51541 merged Feb 22, 2023

• PERF: assert_index_equal with MultiIndex

  #51544 merged Feb 22, 2023

• DEPR: deprecate allowing slice in DataFrame.take

  #51539 merged Feb 22, 2023

• DOC: fix EX02 errors in docstrings

  #51529 merged Feb 21, 2023

• DOC: Updating the timedeltas.seconds docstring for Issue #50969

  #51522 merged Feb 21, 2023

• REF: combine groupby helpers

  #51516 merged Feb 21, 2023

• DOC Fix EX01 issues in docstrings

  #51533 merged Feb 21, 2023

• CLN: read_html global importing check

  #51505 merged Feb 21, 2023

• Backport PR #51443 on branch 2.0.x (CI/TST: Error on PytestUnraisableExceptionWarning instead of using psutil to check open resources)

  #51507 merged Feb 21, 2023

• Backport PR #51470 on branch 2.0.x (DEPS: Partial Matplotlib 3.7 support)

  #51510 merged Feb 21, 2023

• Backport PR #51328 on branch 2.0.x (DOC: clarify "inplace"-ness of DataFrame.setitem)

  #51512 merged Feb 21, 2023

• Backport PR #51530 on branch 2.0.x (CLN: Fix up link in docs)

  #51531 merged Feb 21, 2023

• DOC: Add whatsnew file for 2.1.0

  #51511 merged Feb 21, 2023

• Backport PR #51509 on branch 2.0.x (DOC: Clean up release notes of 2.0.0)

  #51528 merged Feb 21, 2023

• CLN: Fix up link in docs

  #51530 merged Feb 21, 2023

• Backport PR #51513 on branch 2.0.x (CI: Run pipelines on 2.0.x branch)

  #51527 merged Feb 21, 2023

• PERF: Improve performance for ser + range

  #51518 merged Feb 21, 2023

• REF: de-duplicate NDFrame.take, remove Manager.take keyword

  #51482 merged Feb 21, 2023

• TST: fix pyarrow xfails for date/time dtypes

  #51281 merged Feb 21, 2023

• DOC: Clean up release notes of 2.0.0

  #51509 merged Feb 21, 2023

• CI: Run pipelines on 2.0.x branch

  #51513 merged Feb 21, 2023

• CLN: Assorted

  #51519 merged Feb 21, 2023

• CLN: Reset global config state in tests

  #51506 merged Feb 21, 2023

33 Pull requests opened by 18 people

• TYP: Use Self for type checking (remaining locations)

  #51524 opened Feb 21, 2023

• Use PyCapsule for internal datetime functions

  #51525 opened Feb 21, 2023

• BUG: Timedelta comparisons with very large pytimedeltas overflowing

  #51538 opened Feb 21, 2023

• TST: Add test for groupby rename categories with multiIndexes

  #51555 opened Feb 22, 2023

• BUG: GH50127 fixes error for converting to / creating Index with dtype `S3`

  #51559 opened Feb 22, 2023

• BUG: transpose inferring dtype for dt in object column

  #51565 opened Feb 22, 2023

• Add `keep_whitespace` and `whitespace_chars` to `read_fwf`

  #51577 opened Feb 23, 2023

• Add `ScatterPlot._scatter()`, similar to `HistPlot._plot()`

  #51582 opened Feb 23, 2023

• CI: Try numpydev skip test

  #51590 opened Feb 23, 2023

• PERF: maybe_promote

  #51592 opened Feb 23, 2023

• DOC: fix EX02 docstring errors for three plotting docstrings

  #51596 opened Feb 23, 2023

• BUG: stack doesn't preserve lower precision floating dtypes

  #51602 opened Feb 23, 2023

• CI: Debug segfaults on npdev

  #51608 opened Feb 24, 2023

• ENH: use native filesystem (if available) for read_parquet with pyarrow engine

  #51609 opened Feb 24, 2023

• BUG: Weighted rolling aggregations min_periods=0

  #51611 opened Feb 24, 2023

• PERF: ArrowExtensionArray.fillna when array does not contains any nulls

  #51635 opened Feb 25, 2023

• COMPAT: Update code for latest Cython 3 beta

  #51640 opened Feb 25, 2023

• ENH: Add downcast as method to DataFrame and Series

  #51641 opened Feb 26, 2023

• API: ArrowExtensionArray._cmp_method to return pyarrow.bool_ type

  #51643 opened Feb 26, 2023

• ENH: add na_action to Categorical.map & CategoricalIndex.map

  #51645 opened Feb 26, 2023

• EHN: allow for to_sql `multi` method with oracle backend

  #51648 opened Feb 26, 2023

• ENH: Add na_position support to midx.sort_values

  #51651 opened Feb 26, 2023

• POC: implement __array_function__

  #51653 opened Feb 26, 2023

• ENH: Improve replace lazy copy for categoricals

  #51659 opened Feb 27, 2023

• WEB: Added stying for pre element within the codeblock divs

  #51665 opened Feb 27, 2023

• ENH: Add CoW mechanism to replace_regex

  #51669 opened Feb 27, 2023

• CLN: Ensure that setitem ops don't coerce values

  #51671 opened Feb 27, 2023

• ENH: Support na_position for sort_index and sortlevel

  #51672 opened Feb 27, 2023

• BUG: ArrowDtype().type raising for fixed size pa binary

  #51674 opened Feb 27, 2023

• Use union to combine indexes, matching behaivor when two indexes have different index types

  #51677 opened Feb 27, 2023

• BUG: Prevent erroring out when comparing unordered categories with different permutations

  #51678 opened Feb 27, 2023

• Updates Hamilton references

  #51682 opened Feb 27, 2023

• BUG: concat sorting when sort=False for all dti

  #51683 opened Feb 28, 2023

58 Issues closed by 17 people

• ENH: to_numeric on dataframe

  #51357 closed Feb 28, 2023

• PERF: groupbys much slower than on v1.5.2

  #51681 closed Feb 27, 2023

• PERF: pd.unique much slower now than v1.5.2

  #51680 closed Feb 27, 2023

• RLS: pandas 1.5.4

  #50814 closed Feb 27, 2023

• BUG: `tz_localize` with Empty DatetimeIndex in MultiIndex

  #51676 closed Feb 27, 2023

• STYLE: replace unwanted-patterns-strings-to-concatenate with ruff

  #51406 closed Feb 27, 2023

• BUILD:

  #51673 closed Feb 27, 2023

• BUG: `pivot_table` generates redundant rows when index columns contain empty strings

  #51399 closed Feb 27, 2023

• Series bool ops testing needs fleshing out

  #19792 closed Feb 26, 2023

• BUG: tm.assert_produces_warnings(None) failing to raise

  #39033 closed Feb 26, 2023

• Indexing Code Roundup

  #32135 closed Feb 26, 2023

• API: make CategoricalDtype.__eq__ stricter

  #37929 closed Feb 26, 2023

• BUG: `sort_index` on a multiindex changes values of the index

  #51647 closed Feb 26, 2023

• DOC: groupby Automatic exclusion of “nuisance” columns

  #46415 closed Feb 26, 2023

• BUG: Int64Index doesn't show when importing from pandas.core.indexes.numeric

  #44993 closed Feb 26, 2023

• BUG?: Series.any / Series.all behavior for pyarrow vs. non-pyarrow empty/all-NA

  #51624 closed Feb 25, 2023

• BUG: GroupBy.idxmin/idxmax returns wrong dtype on empty Series/DataFrame

  #50993 closed Feb 25, 2023

• API/BUG: unnecessary upcasting for df.update

  #23606 closed Feb 25, 2023

• API: ArrowExtensionArray.value_counts should return int64[pyarrow] instead of Int64

  #51462 closed Feb 24, 2023

• WEB: Obfuscate workgroup email addresses

  #51209 closed Feb 24, 2023

• REGR: casting datetime strings with offzet to tz-naive datetime64 fails

  #50140 closed Feb 24, 2023

• BUG: Assigning Float64 Series to Int32 Series fails with type error

  #51616 closed Feb 24, 2023

• BUG: `CategoricalDtype(None, False)` does not equals to category dtype

  #46770 closed Feb 24, 2023

• BUG: loc setitem fails with shape mismatch

  #51450 closed Feb 24, 2023

• BUG: Categorical series `.isin({pd.NaT, ...})` gives all-False

  #36550 closed Feb 24, 2023

• REGR: MultiIndex.isin with an empty iterable raises

  #51599 closed Feb 24, 2023

• BUG: read_parquet fails for hdfs:// files with latest fsspec

  #50639 closed Feb 24, 2023

• REF: de-duplicate iterate_slices

  #51186 closed Feb 24, 2023

• PERF: using `use_nullable_dtypes=True` in `read_parquet` slows performance on large dataframes

  #47345 closed Feb 24, 2023

• BUG: Memory leak in Series.to_json

  #51603 closed Feb 24, 2023

• BUG:

  #51361 closed Feb 24, 2023

• DOC: orient=table not documented in read_json

  #51588 closed Feb 24, 2023

• BUG: dtype="int64[pyarrow]foobar[pyarrow]" fails to raise

  #51225 closed Feb 23, 2023

• BUG: test_finalize.py tests failing on master with pytest-randomly

  #34373 closed Feb 23, 2023

• StataReader processes whole file before reading in chunks

  #48700 closed Feb 23, 2023

• BUG: columns=[] creates other columns than columns=None on DataFrame construct

  #51597 closed Feb 23, 2023

• DOC: improve readability of signature description (type hints)

  #33025 closed Feb 23, 2023

• ENH: Expose type annotations declared in `_typing.py`

  #36594 closed Feb 23, 2023

• TYP: FrameOrSeriesUnion

  #36475 closed Feb 23, 2023

• ENH: Add dtype-support for pandas' type-hinting

  #34248 closed Feb 23, 2023

• CI check each minimum dependency is enforced in *.yaml and environment.yml files

  #50207 closed Feb 23, 2023

• BUG: numpy.iposinf and isneginf fail when NA types are in data frames

  #51382 closed Feb 23, 2023

• Pandas' EMA not matching the stock's EMA?QST:

  #51551 closed Feb 23, 2023

• CI/TST: Enable `-W error:::pandas` in pytest during CI runs

  #48553 closed Feb 22, 2023

• API: specification of functions in .agg

  #8593 closed Feb 22, 2023

• API: Gather and other inspiration from tidyr

  #10109 closed Feb 22, 2023

• API: add top-level functions as method

  #12640 closed Feb 22, 2023

• API: port the magic X from pandas_ply/dplython to pandas proper?

  #13133 closed Feb 22, 2023

• Add set operations to Series objects

  #4480 closed Feb 22, 2023

• Add support for a pandasrc

  #4907 closed Feb 22, 2023

• ENH: Add high-performance DecimalArray type?

  #34166 closed Feb 22, 2023

• STYLE ruff: enable PIE

  #51407 closed Feb 22, 2023

• DOC: seconds attribute of timedelta surprises and no warning is given in the docs

  #50969 closed Feb 21, 2023

• BUG: Series dtype 'binary[pyarrow]' trimms zeros at the end of byte array

  #51526 closed Feb 21, 2023

• Typing Stubs and PEP 561 compatibility

  #28142 closed Feb 21, 2023

• BUG: configparser.NoSectionError: No section: 'versioneer'

  #51499 closed Feb 21, 2023

• BUG: openpyxl 3.1.1 breaks pandas read_excel

  #51537 closed Feb 21, 2023

• PERF: Series + range

  #51502 closed Feb 21, 2023

36 Issues opened by 30 people

• BUG: Inplace `DataFrame.mask` not working on 2.0.0rc0 on mixed-type DataFrame.

  #51685 opened Feb 28, 2023

• DEPR: use_inf_as_na

  #51684 opened Feb 28, 2023

• BUG: bytes of special nan value are lost after pd.concat

  #51675 opened Feb 27, 2023

• ENH: add new columns to existing table with pd.to_sql

  #51670 opened Feb 27, 2023

• ENH: Implement dplyr::glimpse() in pandas

  #51668 opened Feb 27, 2023

• BUG: Memory leak after pd.read_csv() with default parameters

  #51667 opened Feb 27, 2023

• BUG: concat behaves differently for some non-unique indexes: Reindexing only valid with uniquely valued Index objects

  #51666 opened Feb 27, 2023

• BUG: "__index_level_0__" column in 0-row parquet file

  #51664 opened Feb 27, 2023

• WEB: Sorting of PDEPs

  #51662 opened Feb 27, 2023

• WEB: Improve the style of the code boxes in the website

  #51657 opened Feb 26, 2023

• ENH: Support for fill/nearest indexers for non-unique indexes

  #51646 opened Feb 26, 2023

• BUG/API: DTI/TDI/PI/IntervalIndex.map ignore na_action

  #51644 opened Feb 26, 2023

• QST: How can I use df.to_sql() with SQLAlchemy AsyncSession/AsyncEgine

  #51633 opened Feb 25, 2023

• read_html omits a column when reading a wikipedia table

  #51629 opened Feb 25, 2023

• BUG: nested dataframe missing entries when saved to excel

  #51628 opened Feb 25, 2023

• DOC: Wrong link in Roadmap: Block Manager Rewrite

  #51625 opened Feb 25, 2023

• BUG: `to_csv` `date_format` is not taken into account for `PeriodArray`s

  #51621 opened Feb 24, 2023

• BUG: `na_position` ignored when sorting `MultiIndex` with `level!=None`

  #51612 opened Feb 24, 2023

• BUG: binary operations don't propogate attrs depending on order with Series and/or DataFrame/Series

  #51607 opened Feb 24, 2023

• CI: numpy dev build seems broken

  #51589 opened Feb 23, 2023

• BUG: Inconsistency in `groupby` with multi-index

  #51583 opened Feb 23, 2023

• BUG: pivot_table with margins=True changes dtypes of dates

  #51581 opened Feb 23, 2023

• ENH: `pivot_wider/longer()` as wrapper for `melt()` and `pivot()`

  #51576 opened Feb 23, 2023

• BUG: read_fwf modifies / corrupts object (string) whitespace data

  #51569 opened Feb 22, 2023

• DEPR: __invert__ on non-bool dtypes

  #51567 opened Feb 22, 2023

• BUG: Multiples of QuarterOffset not respected by Grouper.

  #51563 opened Feb 22, 2023

• ENH: Add `ScatterPlot._scatter()`

  #51560 opened Feb 22, 2023

• BUG: read_excel not working when filters are active and selected in worksheet

  #51557 opened Feb 22, 2023

• PERF: avoid extra copies in ._where

  #51547 opened Feb 22, 2023

• BUG: Transpose changes dtype from object to timedelta/datetime

  #51546 opened Feb 22, 2023

• BUG: Unable to compare unordered categories

  #51543 opened Feb 21, 2023

• ENH: passing custom win_type to rolling window

  #51540 opened Feb 21, 2023

• DOC: Simplify pandas theme footer

  #51536 opened Feb 21, 2023

• ENH: pd.cut closed intervals

  #51534 opened Feb 21, 2023

• BUG: pd.cut precision doesn't work as expected

  #51532 opened Feb 21, 2023

• BUG: Series.astype(np.integer) doesn't show numpy warning

  #51523 opened Feb 21, 2023

145 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.

• DOC: Set value for undefined variables in examples

  #51389 commented on Feb 27, 2023 • 22 new comments

• TYP: try out TypeGuard

  #51309 commented on Feb 27, 2023 • 12 new comments

• RLS: 2.0

  #46776 commented on Feb 26, 2023 • 11 new comments

• BUG : Add Deprecation FutureWarning for parse function call in read_excel

  #51437 commented on Feb 27, 2023 • 9 new comments

• TYP: Use Self instead of class-bound TypeVar in pyi files (remove Y019)

  #51480 commented on Feb 24, 2023 • 9 new comments

• DOC: Set value for undefined variables in examples

  #51342 commented on Feb 26, 2023 • 8 new comments

• ENH: __pandas_priority__

  #48347 commented on Feb 27, 2023 • 8 new comments

• DOC fix EX02 errors in docstrings

  #51236 commented on Feb 24, 2023 • 7 new comments

• DEPR: DataFrame.groupby(axis=1)

  #51203 commented on Feb 26, 2023 • 7 new comments

• DEPR: SeriesGroupBy._aggregate_named

  #41090 commented on Feb 28, 2023 • 7 new comments

• BUG: str dtype ignored for column with dot

  #50364 commented on Feb 27, 2023 • 7 new comments

• PERF: Implement round on the block level

  #51498 commented on Feb 27, 2023 • 7 new comments

• ERR: Improve error message in validate_percentile

  #51475 commented on Feb 23, 2023 • 6 new comments

• REF/DEPR: Deprecate AbstractMethodError

  #48913 commented on Feb 22, 2023 • 5 new comments

• ENH: EA._hash_pandas_object

  #51319 commented on Feb 27, 2023 • 5 new comments

• ENH: re-implement DataFrame.lookup.

  #40140 commented on Feb 22, 2023 • 4 new comments

• BUG: pd.concat doesn't preserve categorical dtypes

  #51362 commented on Feb 23, 2023 • 4 new comments

• PERF: Use a C Union in maybe_convert_numeric

  #51029 commented on Feb 23, 2023 • 4 new comments

• [READY] Improved performance of `Period`'s default formatter (`period_format`)

  #51459 commented on Feb 24, 2023 • 4 new comments

• DOC: Fix EX01 issues in docstrings

  #37875 commented on Feb 22, 2023 • 3 new comments

• BUG: inferring incorrect datetime format

  #51476 commented on Feb 24, 2023 • 3 new comments

• PERF: Memory leak when returning subset of DataFrame and deleting the rest

  #49582 commented on Feb 27, 2023 • 3 new comments

• ENH: Add support for multiple conditions assign statement

  #50343 commented on Feb 22, 2023 • 3 new comments

• BUG: hashing datetime64 objects

  #50960 commented on Feb 26, 2023 • 3 new comments

• BUG: Fix Grouper with a datetime key in conjunction with another key

  #51414 commented on Feb 25, 2023 • 3 new comments

• WEB: Update feed to Tom's posts

  #51438 commented on Feb 23, 2023 • 3 new comments

• NotImplementedError: method backfill not yet implemented for IntervalIndex

  #51503 commented on Feb 21, 2023 • 2 new comments

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

  #31581 commented on Feb 22, 2023 • 2 new comments

• BUG: Groupby.agg with non-reducing UDF

  #51445 commented on Feb 22, 2023 • 2 new comments

• DEPR: Categorical.to_list

  #51254 commented on Feb 22, 2023 • 2 new comments

• REGR: Index.astype(<numpy string dtype>) started failing

  #50127 commented on Feb 22, 2023 • 2 new comments

• BUG: Multiples of QuarterOffset not respected by rolling.

  #48448 commented on Feb 22, 2023 • 2 new comments

• read_sql should convert Numeric to decimals

  #20525 commented on Feb 23, 2023 • 2 new comments

• PERF: Test suite

  #51520 commented on Feb 23, 2023 • 2 new comments

• API: way to exclude the grouped column with apply

  #7155 commented on Feb 23, 2023 • 2 new comments

• _normalize_keyword_aggregation` named agg helper function should be made public

  #28472 commented on Feb 24, 2023 • 2 new comments

• BUG/API: Categorical.map & CategoricalIndex.map have no 'na_action' kwarg

  #44279 commented on Feb 26, 2023 • 2 new comments

• BUG: groupby.std with no numeric columns and numeric_only=True raises

  #51080 commented on Feb 27, 2023 • 2 new comments

• BUG: numpy>1.24 triggers `RuntimeWarning` when converting NaN via `pd.to_datetime()`

  #50702 commented on Feb 27, 2023 • 2 new comments

• PERF: DataFrame.from_records with DataFrame input

  #51353 commented on Feb 28, 2023 • 2 new comments

• BUG: Inconsistent implicit sorting when doing pd.concat([pd.Series(1, Index(dtype='object'), ...], axis=1)

  #51210 commented on Feb 28, 2023 • 2 new comments

• DOC: Add TextFileReader to docs

  #46308 commented on Feb 23, 2023 • 2 new comments

• BUG: non-64-bit numeric dtypes should raise in IntervalDtype constructor

  #51322 commented on Feb 23, 2023 • 2 new comments

• DEPR: DataFrame.groupby(axis=1)

  #51395 commented on Feb 26, 2023 • 2 new comments

• PDEP-1 first revision (scope)

  #51417 commented on Feb 27, 2023 • 2 new comments

• DOC: improve groupby reference docs

  #6944 commented on Feb 21, 2023 • 1 new comment

• BUG: Unexpected behavior math operations using multiindexes

  #51500 commented on Feb 22, 2023 • 1 new comment

• DOC: Single Document For Code Guidelines

  #33851 commented on Feb 22, 2023 • 1 new comment

• DataFrameGroupBy.idxmin() returns DataFrame, documentation says Series

  #15275 commented on Feb 22, 2023 • 1 new comment

• astype(str) / astype_unicode: np.nan converted to "nan" (checknull, skipna)

  #25353 commented on Feb 22, 2023 • 1 new comment

• ENH: add math mode to formatter `escape="latex"`

  #50040 commented on Feb 22, 2023 • 1 new comment

• API: union_categoricals in concat

  #14177 commented on Feb 22, 2023 • 1 new comment

• API: should Series.get be strictly label based or allow positional?

  #17928 commented on Feb 22, 2023 • 1 new comment

• BUG: categorical Series.map() errors when mapping to tuples.

  #51488 commented on Feb 23, 2023 • 1 new comment

• BUG: Undefined behavior of Series.str.split

  #51400 commented on Feb 23, 2023 • 1 new comment

• BUG: to_json/read_json with orient="table" does not preserve types with `pd.NA`

  #51375 commented on Feb 23, 2023 • 1 new comment

• BUG: Cannot chose whihc level of a categorical to make the dummy (reference level).

  #51350 commented on Feb 23, 2023 • 1 new comment

• BUG: to_timedelta() won't accept all freq units returned by infer_freq()

  #36769 commented on Feb 23, 2023 • 1 new comment

• Inconsistent behavior when DataFrame with strings and None is created from lists or dictionary.

  #32218 commented on Feb 23, 2023 • 1 new comment

• BUG: Weighted rolling aggregations do not respect min_periods=0

  #51449 commented on Feb 24, 2023 • 1 new comment

• TYP: use Self for type checking

  #51233 commented on Feb 24, 2023 • 1 new comment

• ENH: Extending EAs

  #51471 commented on Feb 24, 2023 • 1 new comment

• ENH: allow datelike to be aggregated in resample

  #6409 commented on Feb 25, 2023 • 1 new comment

• BUG: any and all are much slower than min and max for GroupBy.transform

  #37850 commented on Feb 25, 2023 • 1 new comment

• API: Signature of UDF methods

  #40112 commented on Feb 26, 2023 • 1 new comment

• Reading SAS time variables

  #22720 commented on Feb 26, 2023 • 1 new comment

• API: make 'freq' mean the same thing for PeriodIndex as DTI/TDI

  #47227 commented on Feb 26, 2023 • 1 new comment

• sort_index for MultiIndex DataFrame silently fill NaN for index column

  #25818 commented on Feb 26, 2023 • 1 new comment

• ENH: improve partial key indexing performance

  #38650 commented on Feb 26, 2023 • 1 new comment

• BUG: to_parquet produces ValueError exception

  #51140 commented on Feb 27, 2023 • 1 new comment

• DEPR: Change default to `observed=True` in `DataFrame.groupby`

  #43999 commented on Feb 27, 2023 • 1 new comment

• Unexpected behaviour

  #34364 commented on Feb 27, 2023 • 1 new comment

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

  #46227 commented on Feb 22, 2023 • 1 new comment

• CI: Add ccache

  #47360 commented on Feb 23, 2023 • 1 new comment

• PDEP-3: Small data visualization consolidation

  #48080 commented on Feb 22, 2023 • 1 new comment

• DEV: add gitpod actions

  #48108 commented on Feb 22, 2023 • 1 new comment

• API: Add pandas.api.typing

  #48578 commented on Feb 26, 2023 • 1 new comment

• BLD: Setup meson builds

  #49115 commented on Feb 22, 2023 • 1 new comment

• ENH: semi joins

  #49661 commented on Feb 22, 2023 • 1 new comment

• Docker Hub Sample images

  #50046 commented on Feb 22, 2023 • 1 new comment

• STYLE Reduce merge conflicts with `force_single_line`

  #50275 commented on Feb 22, 2023 • 1 new comment

• BLD: Add pyproject.toml to wheels

  #50330 commented on Feb 24, 2023 • 1 new comment

• PERF: Use generator expression for Blocks.replace_list

  #50778 commented on Feb 27, 2023 • 1 new comment

• REF: ArrowEA _data->_pa_array

  #50987 commented on Feb 27, 2023 • 1 new comment

• REF: let EAs override WrappedCythonOp groupby implementations

  #51166 commented on Feb 26, 2023 • 1 new comment

• [WIP] perf improvements for strftime

  #51298 commented on Feb 22, 2023 • 1 new comment

• ENH: Enable more Arrow CSV tests/features

  #51302 commented on Feb 23, 2023 • 1 new comment

• DOC: clarify pitfalls of NA vs NaN in nullable floats

  #51383 commented on Feb 22, 2023 • 1 new comment

• PDEP-8: Inplace methods in pandas

  #51466 commented on Feb 26, 2023 • 1 new comment

• DEPR: silently ignoring unrecognized timezones

  #51477 commented on Feb 28, 2023 • 1 new comment

• TST: don't fail on systems with tzdata backzone enabled

  #51486 commented on Feb 23, 2023 • 1 new comment

• DEP: make pyarrow required dependency

  #50285 commented on Feb 21, 2023 • 0 new comments

• BUG: AttributeError: 'bool' object has no attribute 'to_numpy' in "mask_missing" method of core/missing.py

  #47101 commented on Feb 22, 2023 • 0 new comments

• DEPR: List of deprecations to be removed in 3.0

  #50578 commented on Feb 22, 2023 • 0 new comments

• BUG: Series.take needs to validate axis

  #51022 commented on Feb 22, 2023 • 0 new comments

• QST: With to_dict method, whether support batch transfer pd.NA in dataframe to None in dict value

  #51495 commented on Feb 23, 2023 • 0 new comments

• BUG: Plotting with PeriodIndex with frequency > 1 leads to wrong x-axis

  #51425 commented on Feb 23, 2023 • 0 new comments

• DOC: describe any expected ordering of value counts when sort=False

  #51420 commented on Feb 23, 2023 • 0 new comments

• CI: debugging timeouts

  #51409 commented on Feb 23, 2023 • 0 new comments

• API: Index.insert too much dtype inference

  #51363 commented on Feb 23, 2023 • 0 new comments

• BUG: DataFrame.combine with non-unique columns

  #51340 commented on Feb 23, 2023 • 0 new comments

• BUG: GroupBy.std floating point error

  #51332 commented on Feb 23, 2023 • 0 new comments

• BUG: Partial multiindex columns selection breaks categorical dtypes

  #51261 commented on Feb 23, 2023 • 0 new comments

• BUG: Bad shift_forward ceiling around DST change

  #51501 commented on Feb 23, 2023 • 0 new comments

• REF: de-duplicate Index._find_common_type_compat and dtypes.cast.find_result_type

  #45149 commented on Feb 24, 2023 • 0 new comments

• Information for new contributors – update

  #49275 commented on Feb 25, 2023 • 0 new comments

• CLN/DOC: _selected_obj vs _obj_with_exclusions

  #46944 commented on Feb 25, 2023 • 0 new comments

• ENH: parallelize DataFrame.corr

  #40956 commented on Feb 25, 2023 • 0 new comments

• Very frustrating not to be able to apply per-column date formats exporting to Excel

  #30275 commented on Feb 26, 2023 • 0 new comments

• API: Add pandas.api.typing

  #48577 commented on Feb 26, 2023 • 0 new comments

• ENH: add errors='coerce' to DataFrame.astype

  #48781 commented on Feb 26, 2023 • 0 new comments

• ENH / CoW: Use the "lazy copy" (with Copy-on-Write) optimization in more methods where appropriate

  #49473 commented on Feb 26, 2023 • 0 new comments

• BUG: series created from pyarrow array with date32 type in 1.5rc0 can be created but not displayed

  #48238 commented on Feb 27, 2023 • 0 new comments

• BUG: 1.5.0rc0 extract_links modifies type first item in tuple

  #48355 commented on Feb 27, 2023 • 0 new comments

• BUG: In 1.5rc0 casting Series to datetime64 with specific but non-nanosecond units has no effect

  #48574 commented on Feb 27, 2023 • 0 new comments

• BUG: Change in series copy behavior in 1.5

  #48664 commented on Feb 27, 2023 • 0 new comments

• BUG: UndefinedVariableError in DataFrame.query if name is type

  #48694 commented on Feb 27, 2023 • 0 new comments

• BUG: Regression for `pd.read_parquet` from pandas 1.5.0 ?

  #48848 commented on Feb 27, 2023 • 0 new comments

• BUG: `.loc`/`.iloc`/`.at`/`iat` behave unexpected with object dtype

  #48933 commented on Feb 27, 2023 • 0 new comments

• CI: pydata sphinx theme 0.11 broke doc build

  #48988 commented on Feb 27, 2023 • 0 new comments

• BUG: DataFrame.apply with empty dataframe applies the function

  #49200 commented on Feb 27, 2023 • 0 new comments

• BUG: inconsistent `DataFrame.agg` behavoir when passing as kwargs `numeric_only=True`

  #49352 commented on Feb 27, 2023 • 0 new comments

• BUG: GroupBy.ngroup dropna=False inconsistency when using Categorical

  #50100 commented on Feb 27, 2023 • 0 new comments

• BUG/COMPAT: assert_* functions failing with nested arrays and latest numpy

  #50360 commented on Feb 27, 2023 • 0 new comments

• BUG: Can't mix tuples and strings in column names with Numpy>=1.24

  #50372 commented on Feb 27, 2023 • 0 new comments

• BUG: `to_hdf` produces a different file each time

  #51456 commented on Feb 28, 2023 • 0 new comments

• DOC: Don't show traceback for :okexcept:

  #48394 commented on Feb 22, 2023 • 0 new comments

• BUG: Fix .loc/.iloc/.at/iat cast unexpectedly with object dtype

  #49306 commented on Feb 22, 2023 • 0 new comments

• POC: Devpy CLI

  #50260 commented on Feb 22, 2023 • 0 new comments

• POC: PDEP6 implementation pt 1: block.setitem

  #50626 commented on Feb 22, 2023 • 0 new comments

• CLN validate some Py_* Functions in C Extensions check for NULL

  #50997 commented on Feb 22, 2023 • 0 new comments

• REF: implement groupby std, min, max as EA methods

  #51116 commented on Feb 27, 2023 • 0 new comments

• CI: Change development python version to 3.10

  #51133 commented on Feb 22, 2023 • 0 new comments

• DOC: Formatting of generated DataFrame method docstrings

  #51177 commented on Feb 22, 2023 • 0 new comments

• added test for issue #31104

  #51246 commented on Feb 22, 2023 • 0 new comments

• CI: Add pyarrow 11 to ci

  #51308 commented on Feb 22, 2023 • 0 new comments

• PERF: faster pd.concat when same concat float dtype but misaligned axis

  #51419 commented on Feb 22, 2023 • 0 new comments

• PERF: DataFrame.corr avoid copy

  #51421 commented on Feb 22, 2023 • 0 new comments

• DOC: Add user guide section about copy on write

  #51454 commented on Feb 23, 2023 • 0 new comments

• PDEP-7: Consistent copy/view semantics in pandas with Copy-on-Write

  #51463 commented on Feb 27, 2023 • 0 new comments

• CoW: Ignore copy=True when copy_on_write is enabled

  #51464 commented on Feb 22, 2023 • 0 new comments

• Render PDEPs using sphinx

  #51467 commented on Feb 22, 2023 • 0 new comments

• BUG: Fix error message for unknown methodtype

  #51484 commented on Feb 22, 2023 • 0 new comments

• TYP: Use Self instead of class-bound TypeVar (generic.py/frame.py/series.py)

  #51493 commented on Feb 24, 2023 • 0 new comments

• TYP: Use Self instead of class-bound TypeVar II (pandas/core/arrays/)

  #51497 commented on Feb 24, 2023 • 0 new comments