Insights: pandas-dev/pandas

89 Pull requests merged by 29 people

• API / CoW: always return new objects for column access (don't use item_cache)

  #49450 merged Jan 13, 2023

• API / CoW: constructing Series from Series creates lazy copy (with default copy=False)

  #49524 merged Jan 13, 2023

• DEPR: Remove int64 uint64 float64 index part 1

  #49560 merged Jan 13, 2023

• DOC: Gitpod documentation

  #49642 merged Jan 9, 2023

• API: dtlike.astype(inty)

  #49715 merged Jan 11, 2023

• Backport PR #49771 on branch 1.5.x (PERF: Use fastpath for accessing option value in internals)

  #50128 merged Jan 13, 2023

• PERF: Split blocks in blk.delete

  #50148 merged Jan 9, 2023

• DEV/STYLE: use ruff for linting

  #50160 merged Jan 10, 2023

• DEPR: deprecate Index.is_boolean

  #50176 merged Jan 14, 2023

• DEPR: deprecate Index.is_integer

  #50178 merged Jan 13, 2023

• API: ensure IntervalIndex.left/right are 64bit if numeric, part II

  #50195 merged Jan 10, 2023

• DEPR: deprecate Index.is_float

  #50235 merged Jan 12, 2023

• Use ea interface to calculate accumulator functions for datetimelike

  #50297 merged Jan 13, 2023

• ENH/API: preserve non-nano in to_datetime

  #50369 merged Jan 9, 2023

• Rename duplicate column names in read_json(orient='split')

  #50370 merged Jan 9, 2023

• BUG/COMPAT: fix assert_* functions for nested arrays with latest numpy

  #50396 merged Jan 13, 2023

• ENH: Use lazy copy for dropna

  #50429 merged Jan 13, 2023

• DOC: Add note about copy on write improvements

  #50471 merged Jan 9, 2023

• ENH: Add lazy copy for take and between_time

  #50476 merged Jan 13, 2023

• DEP: Bump pytest, xdist, hypothesis

  #50481 merged Jan 12, 2023

• ENH: Add use_nullable_dtypes to to_numeric

  #50505 merged Jan 10, 2023

• DOC: Add ignore_functions option to validate_docstrings.py

  #50509 merged Jan 8, 2023

• DOC: Add groupby-specific docstrings for take

  #50526 merged Jan 9, 2023

• BUG/PERF: SeriesGroupBy.value_counts sorting bug and categorical performance

  #50548 merged Jan 11, 2023

• REF: handle 2D in array_to_datetime

  #50549 merged Jan 9, 2023

• TYP: Better numeric test types

  #50571 merged Jan 9, 2023

• ENH: Add lazy copy for swapaxes no op

  #50573 merged Jan 12, 2023

• ENH: Add lazy copy to to_timestamp and to_period

  #50575 merged Jan 11, 2023

• DOC: Add missing attributes and methods to MultiIndex API documentation

  #50594 merged Jan 9, 2023

• REGR: Fix regression in to_numpy

  #50606 merged Jan 9, 2023

• BUG/ENH: infer_freq with non-nano

  #50611 merged Jan 12, 2023

• CLN/BUG: Allow assert_produces_warning to raise during an exception

  #50614 merged Jan 13, 2023

• ENH: DTI/TDI as_unit

  #50616 merged Jan 10, 2023

• ENH: guess ISO8601 formats without separators

  #50622 merged Jan 9, 2023

• REF: avoid catching and re-raising in datetime parsing

  #50629 merged Jan 9, 2023

• BUG: Fix bug in putmask for CoW

  #50630 merged Jan 13, 2023

• CLN: Consolidate groupby.value_counts tests

  #50631 merged Jan 9, 2023

• BUG: groupby with empty object, categorical grouper, and dropna=False fails

  #50635 merged Jan 9, 2023

• DOC: Fix column alignment in df.mul docstring

  #50637 merged Jan 9, 2023

• DOC: fix code in groupby documentation

  #50640 merged Jan 9, 2023

• ENH/BUG: preserve non-nano in NaT subtraction

  #50642 merged Jan 9, 2023

• ENH: Add lazy copy for sort_values

  #50643 merged Jan 13, 2023

• CLN: assorted

  #50644 merged Jan 12, 2023

• Fix docstring for layout parameter of boxplot

  #50647 merged Jan 10, 2023

• DEPR: Remove DeprecationWarnings

  #50648 merged Jan 10, 2023

• Improve error message if attempting to construct multidimensional series

  #50651 merged Jan 12, 2023

• ENH: Added explicit arguments in DataFrameGroupBy.describe by replacing **…

  #50653 merged Jan 12, 2023

• DOC fix directive

  #50654 merged Jan 10, 2023

• DOC: Fix some RT02 issues in docstrings

  #50659 merged Jan 10, 2023

• DOC: add default encoding to read_csv

  #50661 merged Jan 10, 2023

• improved description of mamba section

  #50662 merged Jan 10, 2023

• DOC: Improve wording for DataFrame.rename summary

  #50663 merged Jan 10, 2023

• TST: ro_replace changing dtype of series

  #50664 merged Jan 12, 2023

• Add test for checking inconsistencies for large series using Series.rmod

  #50665 merged Jan 11, 2023

• BUG: Timestamp parsing creating invalid object

  #50668 merged Jan 13, 2023

• ENH: fix a bunch of pyarrow duration xfails

  #50669 merged Jan 13, 2023

• BUG: is_[int|float]_dtypes functions not recognizing ArrowDtype

  #50672 merged Jan 11, 2023

• CLN: Remove 3rd party warning filters

  #50674 merged Jan 13, 2023

• CLN: fix and move using_copy_on_write() helper out of internals

  #50675 merged Jan 11, 2023

• DEPR: ADD FutureWarning for pandas.io.execute

  #50676 merged Jan 12, 2023

• TEST: added test case for issue 41800

  #50677 merged Jan 12, 2023

• Update eval_performance.py

  #50679 merged Jan 12, 2023

• DOC: Add note in 1.5.3 about SQLAlchemy warnings

  #50680 merged Jan 12, 2023

• BUG: is_any_int_dtype not recognizing arrow integers

  #50683 merged Jan 12, 2023

• BUG: Series.quantile emitting RuntimeWarning for all NA case

  #50685 merged Jan 12, 2023

• TST: Fix test_constructor_signed_int_overflow_deprecation w/ multiple warnings

  #50686 merged Jan 12, 2023

• TST: CoW with df.isetitem()

  #50692 merged Jan 12, 2023

• Backport PR on Branch 1.5.x (DOC: Add note in 1.5.3 about SQLAlchemy warnings)

  #50693 merged Jan 12, 2023

• Backport PR on Branch 1.5.x (REV: revert deprecation of Series.__getitem__ slicing with IntegerIndex)

  #50694 merged Jan 14, 2023

• add multi index with categories test

  #50697 merged Jan 12, 2023

• CI capture error in numpy dev, fix python-dev build

  #50698 merged Jan 12, 2023

• Backport PR #49386 on branch 1.5.x (DOC: add name parameter to the IntervalIndex for #48911)

  #50700 merged Jan 12, 2023

• Backport PR #50698 on branch 1.5.x (CI capture error in numpy dev, fix python-dev build)

  #50705 merged Jan 12, 2023

• Revert "CI temporarily pin numpy"

  #50706 merged Jan 12, 2023

• DOC: added installation instructions for nightly build

  #50707 merged Jan 13, 2023

• Backport PR #50706 on branch 1.5.x (Revert "CI temporarily pin numpy")

  #50715 merged Jan 13, 2023

• Backport PR #50685 on branch 1.5.x (BUG: Series.quantile emitting RuntimeWarning for all NA case)

  #50718 merged Jan 13, 2023

• BUG: .max() gives wrong answer for non-nanosecond datetimeindex

  #50719 merged Jan 13, 2023

• REF: stricter typing, better naming in parsing.pyx

  #50722 merged Jan 13, 2023

• TST: Cleanup more warning filtering

  #50723 merged Jan 13, 2023

• Backport PR #50630 on branch 1.5.x (BUG: Fix bug in putmask for CoW)

  #50726 merged Jan 13, 2023

• CI fix failing python-dev job

  #50728 merged Jan 13, 2023

• TST: mark copy_view test_switch_options test as single_cpu

  #50729 merged Jan 13, 2023

• Backport PR #50728 on branch 1.5.x (CI fix failing python-dev job)

  #50731 merged Jan 13, 2023

• CLN explicit float casts in tests

  #50733 merged Jan 13, 2023

• Backport PR #50396 on branch 1.5.x (BUG/COMPAT: fix assert_* functions for nested arrays with latest numpy)

  #50739 merged Jan 14, 2023

• TST: Sync pyproject.toml Pytest version with min deps

  #50740 merged Jan 14, 2023

• TST: Fix undefined variables in tests

  #50741 merged Jan 14, 2023

• DOC: Clean whatsnew and dep warning

  #50752 merged Jan 15, 2023

34 Pull requests opened by 17 people

• REF/PERF: ArrowExtensionArray.__setitem__

  #50632 opened Jan 8, 2023

• TST: Get tests to run and fix them to pass

  #50636 opened Jan 9, 2023

• PERF/CLN: Use Numpy C Iterator API to unify isnaobj 1D/2D

  #50658 opened Jan 10, 2023

• DOC: fix closed and dtype arguments of TimedeltaIndex

  #50660 opened Jan 10, 2023

• DOC: improve the string repr of "no_default" in the signature of methods

  #50666 opened Jan 10, 2023

• TST: Add a test for fillna in PeriodArray

  #50671 opened Jan 10, 2023

• BUG: pivot_table with nested elements and numpy 1.24

  #50682 opened Jan 11, 2023

• TST: simplify pyarrow tests, make mode work with temporal dtypes

  #50688 opened Jan 12, 2023

• BUG: ArrowDtype.construct_from_string round-trip

  #50689 opened Jan 12, 2023

• TST: incorrect pyarrow xfails

  #50691 opened Jan 12, 2023

• CI: Try regular 3.11 pipeline

  #50696 opened Jan 12, 2023

• BUG: Fix style.background_gradient() for nullable dtype (ex: Int64) series with pd.NA values

  #50713 opened Jan 12, 2023

• PERF: Fix reference leak in read_hdf

  #50714 opened Jan 12, 2023

• ENH: support any/all for pyarrow numeric and duration dtypes

  #50717 opened Jan 12, 2023

• DOC: improve Index docstrings

  #50720 opened Jan 12, 2023

• BUG: Fix agg with single-element function list given arg and kwargs

  #50725 opened Jan 13, 2023

• PERF (CoW): optimize equality check in groupby is_in_obj

  #50730 opened Jan 13, 2023

• Enhanced the documentation and added examples in pandas tseries offsets Week class

  #50732 opened Jan 13, 2023

• BUG: stringdtype.astype(dt64_or_td64)

  #50734 opened Jan 13, 2023

• REF: share string parsing code

  #50736 opened Jan 13, 2023

• REF: array_with_unit_to_datetime

  #50737 opened Jan 13, 2023

• DOC: list supported float dtypes I

  #50738 opened Jan 13, 2023

• DOC: Add datetime.tzinfo to paramater tz in tz_localize and tz_convert

  #50742 opened Jan 14, 2023

• TST: Test dtype sparseDtype with specificd fill value

  #50743 opened Jan 14, 2023

• REF: groupby Series selection with as_index=False

  #50744 opened Jan 14, 2023

• BUG: Stopping to_csv from trying to write to https

  #50745 opened Jan 14, 2023

• ENH: Add lazy copy to replace

  #50746 opened Jan 14, 2023

• ENH: Add global nullable option

  #50748 opened Jan 14, 2023

• TST: Consolidate tests that raise in groupby

  #50749 opened Jan 14, 2023

• ENH: Add use_nullable_dtypes option to read_json

  #50750 opened Jan 14, 2023

• TEST: dropna() doesn't fall into infinite loop

  #50751 opened Jan 14, 2023

• ENH: Add lazy copy to shift

  #50753 opened Jan 15, 2023

• TST: Determine groupby-transform not convert back type

  #50754 opened Jan 15, 2023

• TST: Test groupby method drop na

  #50755 opened Jan 15, 2023

30 Issues closed by 8 people

• BUG: `warn=True` parameter in `pd.infer_freq()` does not prevent raising a `ValueError` as expected

  #41755 closed Jan 14, 2023

• BUG: Inconsistent return type of df.apply on empty df

  #50588 closed Jan 14, 2023

• DOC: How to install nightly pandas wheels

  #50703 closed Jan 13, 2023

• BUG: .max() gives wrong answer for non-nanosecond datetimeindex

  #50716 closed Jan 13, 2023

• PERF: assigning in a for loop

  #49729 closed Jan 13, 2023

• CI test_constructor_signed_int_overflow_deprecation failing in 1.5.x branch

  #50710 closed Jan 13, 2023

• ENH: Use explicit arguments in DataFrameGroupBy.describe

  #50406 closed Jan 12, 2023

• BUG: `RuntimeWarning` emitted when computing `quantile` on all `pd.NA` `Series`

  #50681 closed Jan 12, 2023

• BUG: MultiIndex intersection doesn't work with categorical dtypes

  #49337 closed Jan 12, 2023

• DEPR: pandas.io.sql.execute

  #50185 closed Jan 12, 2023

• CI: Python 3.11 pipelines are failing

  #50695 closed Jan 12, 2023

• Different behavior of to_replace method between pandas version 0.23.4 and 0.24.2 by changing dtype of series

  #25797 closed Jan 12, 2023

• BUG: `groupby.any` and `groupby.all` returning differing results for groups only containing nulls

  #50678 closed Jan 11, 2023

• BUG: Custom `__repr__` method not used when printing NamedTuples in DataFrame

  #50615 closed Jan 11, 2023

• BUG: pd.Series.str.contains(na=False) not working when entire Series contains nans

  #50650 closed Jan 11, 2023

• BUG: `is_integer_dtype` returns `False` for integer `ArrowDtype`s

  #50667 closed Jan 11, 2023

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

  #29602 closed Jan 11, 2023

• BUG: timedelta as value to plot barplot raises error

  #48103 closed Jan 11, 2023

• BUG: very slow groupby(col1)[col2].value_counts() for columns of type 'category'

  #46202 closed Jan 11, 2023

• BUG: SeriesGroupBy.value_counts sorts when sort=False

  #50482 closed Jan 11, 2023

• BUG: parsing boolean raises TypeError without format, ValueError with format

  #50584 closed Jan 10, 2023

• DOC: boxplot documentation for layout parameter is not correct.

  #50646 closed Jan 10, 2023

• ENH: Cast string dtype to nullable numeric types in to_numeric

  #37294 closed Jan 10, 2023

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

  #29706 closed Jan 10, 2023

• BUG: `to_numpy` is now failing given incompatible `na_value`

  #50600 closed Jan 9, 2023

• ENH: guess ISO8601 formats without separators

  #50514 closed Jan 9, 2023

• BUG: groupby with empty object, categorical grouper, and dropna=False fails

  #50634 closed Jan 9, 2023

• PERF: performance regression in assigning value to df[col_name]

  #46267 closed Jan 9, 2023

• BUG: `int` types are converted to `float` when using `to_dict()` and `iloc` functions together

  #50633 closed Jan 8, 2023

• BUG: DataFrameGroupBy.value_counts when grouper has a frequency

  #47286 closed Jan 8, 2023

24 Issues opened by 18 people

• PERF: Inefficient data representation when building dataframe from 2D NumPy array

  #50756 opened Jan 15, 2023

• ENH: Add a global option to set use_nullable_dtypes to True if not explicitly specified

  #50747 opened Jan 14, 2023

• API: to_datetime with unit changes how strings are interpreted

  #50735 opened Jan 13, 2023

• BUG: DatetimeIndex with non-nano values and freq='D' throws ValueError

  #50727 opened Jan 13, 2023

• BUG: groupby.agg with mutliples ignores as_index=False after subset to a single column

  #50724 opened Jan 13, 2023

• BUG: to_datetime with mixed iso-str and ints

  #50721 opened Jan 12, 2023

• BUG: style.background_gradient() fails on nullable series (ex: Int64) with null values

  #50712 opened Jan 12, 2023

• DEPR: For v2.0, Deprecate using np.nan as the missing value type in pd.Categorical and use pd.NA instead

  #50711 opened Jan 12, 2023

• BUG: to_csv attempts to download and write to in-memory stream instead of failing when http url is provided

  #50709 opened Jan 12, 2023

• BUG: accessing `.dtypes` in a subclass constructor with large frames causes infinite loop

  #50708 opened Jan 12, 2023

• API revert inference of resolution when parsing string in Timestamp?

  #50704 opened Jan 12, 2023

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

  #50702 opened Jan 12, 2023

• CI can't install nightly-numpy on macos

  #50699 opened Jan 12, 2023

• BUG: Index.get_indexer with mixed-reso datetime64s

  #50690 opened Jan 12, 2023

• API: groupby(...).agg with dict argument

  #50684 opened Jan 11, 2023

• API/BUG: pd.concat doesn't copy indexes if with axis=1 and copy=True when they are the same

  #50673 opened Jan 11, 2023

• BUG: read_sas(..) interprets some zeros as 5.397605e-79

  #50670 opened Jan 10, 2023

• BUG: replace hits maximum recursion depth

  #50657 opened Jan 10, 2023

• BUG: resample don't work with non-nanosecond reso

  #50656 opened Jan 10, 2023

• DOC: tz_x functions do not include zoneinfo and tzinfo support in their documentation

  #50655 opened Jan 10, 2023

• PERF: concat slow, manual concat through reindexing enhances performance

  #50652 opened Jan 10, 2023

• BUG: GH-15354 ENH breaks documentation example with non-backward-compatible signature change

  #50645 opened Jan 9, 2023

• BUG: pd.read_xml does not support file like object when iterparse is used

  #50641 opened Jan 9, 2023

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

  #50639 opened Jan 9, 2023

111 Unresolved conversations

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

• ENH: Add lazy copy to concat and round

  #50501 commented on Jan 13, 2023 • 29 new comments

• BLD: Setup meson builds

  #49115 commented on Jan 10, 2023 • 20 new comments

• BUG: Unclear FutureWarning regarding inplace iloc setitem

  #48673 commented on Jan 11, 2023 • 11 new comments

• ENH: Use lazy copy in infer objects

  #50428 commented on Jan 13, 2023 • 11 new comments

• API deprecate date_parser, add date_format

  #50601 commented on Jan 9, 2023 • 9 new comments

• RLS: pandas 1.5.3

  #49857 commented on Jan 14, 2023 • 9 new comments

• DEPR: Remove unnecessary kwargs in groupby ops

  #50483 commented on Jan 10, 2023 • 9 new comments

• CLN remove exception catching in string_to_dts

  #50515 commented on Jan 11, 2023 • 7 new comments

• ENH: Add support for multiple conditions assign statement

  #50343 commented on Jan 8, 2023 • 6 new comments

• DOC: Fix RT02 issues in docstrings

  #49968 commented on Jan 11, 2023 • 5 new comments

• QST: Is there a work-around for repeated FutureWarnings?

  #50603 commented on Jan 12, 2023 • 5 new comments

• Meta issue: SAS7BDAT parser improvements

  #47339 commented on Jan 13, 2023 • 5 new comments

• REF: Use `Styler` implementation for `DataFrame.to_latex`

  #47970 commented on Jan 13, 2023 • 5 new comments

• read_json engine keyword and pyarrow integration

  #49249 commented on Jan 13, 2023 • 5 new comments

• DEPR: deprecate Index.is_categorical

  #50225 commented on Jan 15, 2023 • 5 new comments

• ENH: Add calamite engine to `read_excel`

  #50581 commented on Jan 12, 2023 • 5 new comments

• API / CoW: detect and raise error for chained assignment under Copy-on-Write

  #49467 commented on Jan 13, 2023 • 4 new comments

• BUG: Remove FutureWarning for `DataFrame.loc`

  #50044 commented on Jan 12, 2023 • 4 new comments

• REGR: NumPy func warning when dropping nuisance in agg, apply, transform

  #50627 commented on Jan 14, 2023 • 4 new comments

• BUG: Inconsistent result dtypes for aggregation functions (e.g. sum, mean, .apply(np.sum), ...)

  #50628 commented on Jan 9, 2023 • 3 new comments

• Replace get_c_string_buf_and_size with PyUnicode_AsUTF8AndSize

  #49760 commented on Jan 10, 2023 • 3 new comments

• PERF: Speed up Period construction

  #50149 commented on Jan 11, 2023 • 3 new comments

• TST: test explicit copy keyword with CoW enabled

  #50536 commented on Jan 13, 2023 • 3 new comments

• PERF: Plots with some DatetimeIndex frequencies very slow

  #50355 commented on Jan 8, 2023 • 2 new comments

• BUG: Excessive memory usage loading Dataframe with mixed data types from HDF5 file saved in "table" format

  #37441 commented on Jan 11, 2023 • 2 new comments

• BUG: rolling aggregate() with a list of functions along axis 1 raises ValueError

  #46132 commented on Jan 11, 2023 • 2 new comments

• ENH: Add Alpine to CI

  #50511 commented on Jan 11, 2023 • 2 new comments

• API: GroupBy.agg() numeric_only deprecation with custom function

  #50538 commented on Jan 11, 2023 • 2 new comments

• API: CoW and explicit `copy` keyword in DataFrame/Series methods

  #50535 commented on Jan 11, 2023 • 2 new comments

• BUG: interpreting dt64 as utc in array_to_datetime/infer_to_datetimelike

  #49291 commented on Jan 12, 2023 • 2 new comments

• API: Breaking Changes in 2.0 (without deprecations)

  #44823 commented on Jan 12, 2023 • 2 new comments

• BUG: agg ignores args/kwargs when giving a list-like argument

  #50624 commented on Jan 13, 2023 • 2 new comments

• DEPR: List of deprecations to be removed in 3.0

  #50578 commented on Jan 15, 2023 • 2 new comments

• DEPR: allowing unknown array-likes in merge

  #48454 commented on Jan 13, 2023 • 2 new comments

• DEPR: positional arguments in favor of keyword arguments

  #48735 commented on Jan 13, 2023 • 2 new comments

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

  #49228 commented on Jan 13, 2023 • 2 new comments

• BUG: Index with null value not serialized correctly to json

  #50400 commented on Jan 10, 2023 • 2 new comments

• DEPR: Remove int64 uint64 float64 index tests

  #50479 commented on Jan 11, 2023 • 2 new comments

• Updating and re-opening PR #48129

  #50541 commented on Jan 9, 2023 • 2 new comments

• Updating and re-opening PR #48275

  #50542 commented on Jan 10, 2023 • 2 new comments

• BUG: Order of dict items in DataFrame.from_dict changes the result dataframe

  #50461 commented on Jan 8, 2023 • 1 new comment

• BUG: xaxis formatter receives index instead of values

  #50508 commented on Jan 9, 2023 • 1 new comment

• Views, Copies, and the SettingWithCopyWarning Issue

  #10954 commented on Jan 9, 2023 • 1 new comment

• BUG: JSON serialization with orient split fails roundtrip with MultiIndex

  #50456 commented on Jan 10, 2023 • 1 new comment

• BUG: Empty string multilevel column names

  #49765 commented on Jan 10, 2023 • 1 new comment

• BUG: DataFrame.agg crashing with user-defined function

  #41768 commented on Jan 10, 2023 • 1 new comment

• DataFrame.to_excel with xlsxwriter and constant_memory makes most of the cells empty

  #15392 commented on Jan 11, 2023 • 1 new comment

• BUG: Rank on Rolling window not correct when using FixedForwardWindowIndexer

  #50315 commented on Jan 11, 2023 • 1 new comment

• BUG: Surprisingly large memory usage in groupby (but maybe I have the wrong mental model?)

  #37139 commented on Jan 11, 2023 • 1 new comment

• get start and end of regex match in dataframe

  #8747 commented on Jan 12, 2023 • 1 new comment

• BUG: SQLAlchemy 1.4.46 emits warning with pandas 1.5.2, SQLAlchemy 1.4.45 has no warning

  #50558 commented on Jan 12, 2023 • 1 new comment

• Support axis=None in all reductions

  #21597 commented on Jan 12, 2023 • 1 new comment

• API: any/all logical operation for datetime-like dtypes

  #34479 commented on Jan 12, 2023 • 1 new comment

• API: should reindex on a level introduce NaNs for missing entries per label of other levels?

  #12319 commented on Jan 13, 2023 • 1 new comment

• BUG: Groupby mean differs depending on where `np.inf` value was introduced

  #50367 commented on Jan 13, 2023 • 1 new comment

• DOC: Weekday incompatibility with Python’s demands better documentation

  #47651 commented on Jan 13, 2023 • 1 new comment

• RLS: 2.0

  #46776 commented on Jan 13, 2023 • 1 new comment

• col.replace(dict) takes too much memory

  #6697 commented on Jan 13, 2023 • 1 new comment

• newline defaults for read_csv and write_csv are not consistent

  #10018 commented on Jan 14, 2023 • 1 new comment

• BUG: ValueError converting dense categorical series to sparse when `fill_value` not in series

  #49987 commented on Jan 14, 2023 • 1 new comment

• DatetimeIndex.to_period does not support multiple of frequencies

  #14070 commented on Jan 14, 2023 • 1 new comment

• API: Specify the behaviour for operating on empty objects

  #47959 commented on Jan 14, 2023 • 1 new comment

• TimeStamp column name to_csv date_format

  #27306 commented on Jan 14, 2023 • 1 new comment

• BUG: `pd.Series.duplicated`/`pd.core.algorithms.duplicated` fails with float-based `SparseArray`

  #48788 commented on Jan 14, 2023 • 1 new comment

• TST: Cleanup tests from numeric_only / nuisance deprecation

  #50133 commented on Jan 14, 2023 • 1 new comment

• API: Deprecate Index.is_(boolean|categorical|integer|floating|numeric|object|interval)

  #50042 commented on Jan 15, 2023 • 1 new comment

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

  #49306 commented on Jan 13, 2023 • 1 new comment

• TST: Tests for replace method when column contains pd.NA (#47480)

  #49805 commented on Jan 15, 2023 • 1 new comment

• TYP #37715: Fix mypy errors in accessor.py

  #50005 commented on Jan 9, 2023 • 1 new comment

• DEPR: remove Index._is backward_compat_public_numeric_index

  #50052 commented on Jan 15, 2023 • 1 new comment

• BUG: fix AttributeError: CompileError object has no attribute orig

  #50053 commented on Jan 12, 2023 • 1 new comment

• BUG: loc.setitem raising when expanding empty frame with array value

  #50065 commented on Jan 14, 2023 • 1 new comment

• TYP: fix mypy ignored error in pandas/compat/numpy/function.py

  #50104 commented on Jan 13, 2023 • 1 new comment

• add test case for #50105

  #50106 commented on Jan 12, 2023 • 1 new comment

• BUG: fixed issue where Index was being accessed with DatetimeIndex attribute

  #50179 commented on Jan 13, 2023 • 1 new comment

• Improve to_datetime bounds checking

  #50183 commented on Jan 13, 2023 • 1 new comment

• BUG/TST Added support for empty dictionary when passed to agg for gro…

  #50192 commented on Jan 13, 2023 • 1 new comment

• Index order fix

  #50193 commented on Jan 13, 2023 • 1 new comment

• DEPR: deprecate Index.is_interval

  #50196 commented on Jan 12, 2023 • 1 new comment

• DEPR: deprecate Index.holds_integer

  #50243 commented on Jan 15, 2023 • 1 new comment

• POC: Devpy CLI

  #50260 commented on Jan 14, 2023 • 1 new comment

• PDEP6: ban upcasting in Series setitem-like operations

  #50424 commented on Jan 15, 2023 • 1 new comment

• TST: Test CoW with DataFrame.items()

  #50595 commented on Jan 9, 2023 • 1 new comment

• Float conversion makes fillna lossy

  #24537 commented on Jan 10, 2023 • 0 new comments

• BUG: numpy 1.24.0 causes ValueError with pivot_table and ragged nested sequences

  #50342 commented on Jan 11, 2023 • 0 new comments

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

  #30228 commented on Jan 12, 2023 • 0 new comments

• Cannot query dataframe using str.slice with negative indexes

  #49905 commented on Jan 12, 2023 • 0 new comments

• BUG: Confusing/inconsistent behaviour with `.to_sql()` when using a custom PostgreSQL `search_path`

  #45392 commented on Jan 12, 2023 • 0 new comments

• Subplot date ticks appear unevenly spaced with irregular time series

  #46961 commented on Jan 12, 2023 • 0 new comments

• pd.eval not correctly evaluating equality of local string variables

  #47629 commented on Jan 12, 2023 • 0 new comments

• BUG: Reading a HDF with nested search terms produces different results depending on how the data is sorted

  #50598 commented on Jan 12, 2023 • 0 new comments

• DEPR: Series.__getitem__, Series.__setitem__

  #50617 commented on Jan 12, 2023 • 0 new comments

• Expose the blocks API and disable automatic consolidation

  #10556 commented on Jan 13, 2023 • 0 new comments

• SettingWithCopy dependence on reference count

  #14150 commented on Jan 13, 2023 • 0 new comments

• API/DEPR: DataFrame/Series.replace is too complex.

  #33302 commented on Jan 13, 2023 • 0 new comments

• API: Timestamp and Timedelta .value changing in 2.0

  #49076 commented on Jan 13, 2023 • 0 new comments

• BUG: datetime ExtensionDtype do not work with DataFrame

  #35767 commented on Jan 13, 2023 • 0 new comments

• API: bool(pd.NA)

  #38224 commented on Jan 13, 2023 • 0 new comments

• BLD: remove support for 32 bit

  #44453 commented on Jan 13, 2023 • 0 new comments

• STYLE: Prohibit parsing exeption messages in `try/except` code flows

  #50353 commented on Jan 14, 2023 • 0 new comments

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

  #49473 commented on Jan 15, 2023 • 0 new comments

• CI: Add ccache

  #47360 commented on Jan 9, 2023 • 0 new comments

• API: Add DataFrameGroupBy and SeriesGroupBy to top level

  #48578 commented on Jan 9, 2023 • 0 new comments

• ENH: Add masked engine

  #49420 commented on Jan 14, 2023 • 0 new comments

• API: various .value_counts() result in different names / indices

  #49912 commented on Jan 13, 2023 • 0 new comments

• STYLE: prohibit parsing exeption messages

  #50408 commented on Jan 12, 2023 • 0 new comments

• BUG: Period constructor raises instead of ignoring when passing a string with extra precision(pico, femto, etc.)

  #50417 commented on Jan 11, 2023 • 0 new comments

• CI: Fix npdev error on deprecation & future warnings

  #50452 commented on Jan 13, 2023 • 0 new comments

• BUG: DataFrame constructor not tracking reference if called with df

  #50499 commented on Jan 12, 2023 • 0 new comments

• CI: Try with sqlalchemy warnings

  #50580 commented on Jan 8, 2023 • 0 new comments

• (WIP) PDEP6 implementation pt 1: block.setitem

  #50626 commented on Jan 13, 2023 • 0 new comments