pandas-dev/pandas issues and pull requests

#62792 - BUG: HDF5 file stores hardcoded pandas version "0.15.2" instead of actual pandas version

Issue - State: open - Opened by grzanka about 1 month ago - 1 comment
Labels: Bug, Needs Triage

#62787 - BUG: Enabling Copy on Write with DataFrame.replace Raises Exception with np.nan as replacement value

Issue - State: open - Opened by achapkowski about 1 month ago - 1 comment
Labels: Bug, Needs Triage

#62724 - BUG: `UnboundLocalError` when calling `pd.option_context` with an invalid key on the `main` branch

Issue - State: open - Opened by ogrisel about 1 month ago
Labels: Bug, Needs Triage

#62711 - BUG: pandera check fails with pandas `KeyError` on certain columns starting with version 2.3.3

Issue - State: open - Opened by melohr about 1 month ago - 3 comments
Labels: Bug, Needs Triage

#62710 - BUG: Series with NA values are replaced with NaN when mapping over categorial data with a default providing dictionary

Issue - State: open - Opened by Jake-Moss about 1 month ago
Labels: Bug, Needs Triage

#62694 - PERF: rolling std/var x100 slower in current dev version

Issue - State: open - Opened by yolking about 1 month ago - 1 comment
Labels: Performance, Needs Triage

#62687 - API/DEPR: disallow casting nan-float to bool

Issue - State: open - Opened by jbrockmendel about 1 month ago - 1 comment
Labels: Bug, Needs Triage

#62622 - BUG: boolean indexing gets different results during multiple runnings

Issue - State: closed - Opened by fengxh0628 about 2 months ago
Labels: Bug, Needs Triage

#62617 - BUG: incorrect string parsing leads to segfault

Issue - State: open - Opened by leolavaur about 2 months ago
Labels: Bug, Needs Triage

#62595 - BUG: Multiplying a series of strings with a boolean different for arrow vs. python

Issue - State: open - Opened by Dr-Irv about 2 months ago
Labels: Bug, Needs Triage

#62558 - ENH: Adding an empty level at the end of a multi index

Issue - State: open - Opened by HichemAK about 2 months ago
Labels: Enhancement, Needs Triage

#62534 - ENH: Add null percent in output of describe()

Issue - State: open - Opened by dttran-glo about 2 months ago
Labels: Enhancement, Needs Triage

#62531 - BUG: Parsing a CSV file with string that looks like a number

Issue - State: closed - Opened by fffej about 2 months ago - 3 comments
Labels: Bug, Needs Triage

#62524 - BUG: Inconsistent runtime typing for Index[num] * list[timestamp]

Issue - State: open - Opened by cmp0xff about 2 months ago
Labels: Bug, Needs Triage

#62517 - BUG: `DataFrame.add(Series, axis=0)` mis-broadcasts with numpy 2.3 on wide DataFrames

Issue - State: open - Opened by lukashergt about 2 months ago
Labels: Bug, Needs Triage

#62501 - BUG: Inconsistent behavior of Groupby with None values with filter

Issue - State: open - Opened by chiiyeh about 2 months ago
Labels: Bug, Needs Triage

#62497 - BUG: Merge_asof fails for unknow reason

Issue - State: open - Opened by igjayanth about 2 months ago
Labels: Bug, Needs Triage

#62490 - BUG: rolling().first() and rolling().last() don't work

Issue - State: open - Opened by k0ck about 2 months ago
Labels: Bug, Needs Triage

#62477 - BUG: incorrect `cumsum` results for pyarrow on windows

Issue - State: open - Opened by MarcoGorelli about 2 months ago
Labels: Bug, Needs Triage

#62473 - BUG: "boolean value of NA is ambiguous" when doing iloc on nullable integer series

Issue - State: open - Opened by MarcoGorelli about 2 months ago
Labels: Bug, Needs Triage

#62472 - BUG: FloatingArray.setitem accepts FloatingArray as key

Issue - State: open - Opened by jbrockmendel about 2 months ago
Labels: Bug, Needs Triage

#62467 - BUG: flex op with ExtensionArray and fill_value

Issue - State: open - Opened by jbrockmendel about 2 months ago
Labels: Bug, Needs Triage

#62448 - BUG: NumpyEA[uint8].take([-1], allow_fill=True) nonsense result

Issue - State: open - Opened by jbrockmendel 2 months ago
Labels: Bug, Needs Triage

#62443 - BUG: Dataframe.aggregate has inconsistent behaviour for empty dataframe

Issue - State: open - Opened by flori-ko 2 months ago
Labels: Bug, Needs Triage

#62414 - ENH: Disable sorting groups by default in `groupby`

Issue - State: open - Opened by asemptote 2 months ago
Labels: Enhancement, Needs Triage

#62377 - ENH: add value_counts_with_normalization

Issue - State: open - Opened by dont-4get-me-men 2 months ago
Labels: Enhancement, Needs Triage

#62370 - BUG: None in dtype=bool Series does not behave like 3-valued logic

Issue - State: open - Opened by Tarun2605 2 months ago
Labels: Bug, Needs Triage

#62354 - BUG: Imported floats from Stata do not round correctly

Issue - State: closed - Opened by CoreyBurger 2 months ago - 1 comment
Labels: Bug, IO Stata, Needs Triage

#62343 - BUG: _get_common_dtype with date32[pyarrow] and null[pyarrow]

Issue - State: open - Opened by jbrockmendel 2 months ago
Labels: Bug, Needs Triage

#62342 - BUG: inconsistent comparison results when using PyArrow backend.

Issue - State: closed - Opened by lenardkoomen-fin 2 months ago - 1 comment
Labels: Bug, Needs Triage

#62336 - DOC:

Issue - State: open - Opened by hunterhogan 2 months ago
Labels: Docs, Needs Triage

#62307 - BUG: `to_datetime` inconsistant between Series & DataFrame with timestamps

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

#62306 - ENH: add support for .ceil() and .floor() for series/frame

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

#62277 - BUG: DatetimeIndex.get_indexer(timestamp[pyarrow])

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

#62264 - BUG: pd.json_normalize error when non-string keys are used in arguments

Issue - State: closed - Opened by ybressler 3 months ago - 4 comments
Labels: Bug, IO JSON, Needs Triage

#62262 - ENH: reading Parquet with PyArrrow : read_parquet equivalent of date_as_object=False

Issue - State: open - Opened by simonaubertbd 3 months ago - 7 comments
Labels: Enhancement, IO Parquet, Needs Triage, datetime.date

#62260 - BUG: Incorrect Future warning between operation of pyarrow boolean series

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

#62244 - PERF: `DataFrame.unstack()` and `DataFrame.pivot_table()` upcasting take up more memory than needed

Issue - State: closed - Opened by pabloknecht 3 months ago - 10 comments
Labels: Performance, Needs Triage, Nullable by default

#62233 - BUG:

Issue - State: open - Opened by ry99765-commits 3 months ago
Labels: Bug, Needs Triage

#62228 - ENH: Add Support for Reading .conll Files in Pandas

Issue - State: closed - Opened by namesarnav 3 months ago - 1 comment
Labels: Enhancement, Needs Triage

#62213 - BUG: Using unstacking with `sort=False` after grouping with `sort=False` incorrectly shuffles data

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

#62207 - ENH: Infer enums as categories

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

#62205 - BUG: `record_prefix` ignored when `record_path` is empty

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

#62204 - BUG: memory leak in to_json when converting DateTime values

Issue - State: open - Opened by swt2c 3 months ago
Labels: Bug, Needs Triage

#62185 - DOC: pandas.NaT - "alias of NaT"

Issue - State: open - Opened by wjandrea 3 months ago
Labels: Docs, Needs Triage

#62184 - ENH: Add DataFrame versioning extension for Git-like version control

Issue - State: closed - Opened by Tomserre 3 months ago - 1 comment
Labels: Enhancement, Needs Triage

#62161 - DOC: date_range/timedelta_range confusing 3 out of 4 arguments note

Issue - State: open - Opened by loicdiridollou 3 months ago
Labels: Docs, Needs Triage

#62158 - API: indexing dates-with-datetime64

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

#62154 - BUG: resampling with origin=end_date includes extra elements in the bucket

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

#62150 - BUG: Inconsistent behaviour when merging reset-ed MultiIndex dataframe

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

#62146 - BUG: Fails to Build on Raspberry Pi 3 (tested both 2.1.4 and 2.3.1)

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

#62141 - ENH: Consistent DataFrameGroupBy.name

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

#62140 - BUG: type error in `df.attrs.update()`

Issue - State: closed - Opened by janosh 3 months ago - 1 comment
Labels: Bug, Needs Triage

#62121 - BUG: Addition of __set_module__ breaks PyCharm PyDev debugger functionalities

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

#62119 - PERF: Pandas parser lib takes 50MB of memory on Windows

Issue - State: open - Opened by LucaCerina 3 months ago
Labels: Performance, Needs Triage

#62111 - BUG: to_csv uses inconsistent microsecond format for datetimes with timezones

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

#62109 - BUG: `pd.api.types.is_string_dtype()` returns inconsistent results for Categorical series vs dtype

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

#62100 - BUG: `tz_localize(None)` incorrectly converts timestamps when using `pyarrow` dtypes

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

#62089 - ENH: More compact printing of a DataFrame with MultiIndex columns

Issue - State: open - Opened by sam-s 4 months ago
Labels: Enhancement, Needs Triage

#62072 - BUG: DataFrame.to_json() does not accurately serialize floats such that they can be deserialized without lost information

Issue - State: open - Opened by PentageerJoshuaMeetsma 4 months ago
Labels: Bug, Needs Triage

#62063 - BUG: is_scalar(Enum) gives False

Issue - State: open - Opened by cmp0xff 4 months ago
Labels: Bug, Needs Triage

#62052 - BUG: Pandas mean function fails on type pd.NA with axis=1 but not axis=0

Issue - State: closed - Opened by peterktrinh 4 months ago
Labels: Bug, Needs Triage

#62048 - API: Series[Float64] == False

Issue - State: closed - Opened by jbrockmendel 4 months ago - 2 comments
Labels: Bug, Needs Triage

#62024 - BUG: NaN vs NA in mixed reduction

Issue - State: open - Opened by jbrockmendel 4 months ago
Labels: Bug, Needs Triage

#62022 - DEPR: convert_dtypes keywords

Issue - State: open - Opened by jbrockmendel 4 months ago
Labels: Bug, Needs Triage

#62018 - BUG: pd.api.types.is_signed_integer_dtype(np.floating) throws TypeError

Issue - State: open - Opened by windiana42 4 months ago
Labels: Bug, Needs Triage

#62008 - BUG: `assert_series_equal` broken with `check_category_order=False` for arrays with null values

Issue - State: open - Opened by fjetter 4 months ago
Labels: Bug, Needs Triage

#61998 - DOC: documenting pandas.MultIndex.argsort

Issue - State: open - Opened by loicdiridollou 4 months ago
Labels: Docs, Needs Triage

#61986 - DOC: Improve docstrings in utility functions in pandas/core/common.py (lines 176–210)

Issue - State: closed - Opened by eduardocamacho10 4 months ago - 1 comment
Labels: Docs, Needs Triage

#61976 - BUG: infer_dtype returns "mixed" for complex and pd.NA mix

Issue - State: open - Opened by yuanx749 4 months ago
Labels: Bug, Needs Triage

#61975 - BUG: 'Sphinx parallel build error' when building docs locally prevents index.html creation

Issue - State: open - Opened by jeffersbaxter 4 months ago
Labels: Bug, Needs Triage

#61973 - BUG: Th lines skipped by pd.read_csv(path, chunksize=n, on_bad_lines='skip') depends on `n`.

Issue - State: open - Opened by alexbra1 4 months ago
Labels: Bug, Needs Triage

#61968 - DOC: code coverage app provided in documentation is invalid

Issue - State: closed - Opened by eicchen 4 months ago - 1 comment
Labels: Docs, Needs Triage

#61955 - DOC: shift argument in `Series.shift()` is not used

Issue - State: open - Opened by Dr-Irv 4 months ago
Labels: Docs, Needs Triage

#61952 - BUG: Using `Series.str.fullmatch()` with a compiled regex fails with arrow strings

Issue - State: open - Opened by Dr-Irv 4 months ago
Labels: Bug, Needs Triage

#61951 - BUG: Implicit upcast to float64 for large series (more than 1000000 rows)

Issue - State: open - Opened by stertingen 4 months ago
Labels: Bug, Needs Triage

#61943 - BUG: series.groupby(level=0) and series.groupby(pd.Grouper(level=0)) produce different orders

Issue - State: open - Opened by sfc-gh-mvashishtha 4 months ago
Labels: Bug, Needs Triage

#61940 - BUG: Using `/` operator with a `Path` and `Series` of strings containing pyarrow strings fails

Issue - State: open - Opened by Dr-Irv 4 months ago
Labels: Bug, Needs Triage

#61939 - DOC: Docstring for BooleanDType inconsistent with the rest of repo

Issue - State: open - Opened by saguaro1234 4 months ago
Labels: Docs, Needs Triage

#61938 - BUG: `metadata` on `np.ndarray` of `np.dtype("O")` dtype lost when roundtripped through `pandas.Series`

Issue - State: open - Opened by ilan-gold 4 months ago
Labels: Bug, Needs Triage

#61937 - BUG: `Index` accepts lists as values

Issue - State: open - Opened by Dr-Irv 4 months ago
Labels: Bug, Needs Triage

#61935 - BUG: assert_index_equal(CategoricalIndex, CategoricalIndex, check_categorical=True, exact=False) raises TypeError instead of AssertionError

Issue - State: open - Opened by mroeschke 4 months ago
Labels: Bug, Needs Triage

GitHub / pandas-dev/pandas issues and pull requests