List view

Dividing None Series with Timedelta fails with pandas 1.0.1

Numeric OperationsArithmetic, Comparison, and Logical operationsArithmetic, Comparison, and Logical operations

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#31869 In pandas-dev/pandas;

· by pquentin was closed on Feb 29, 2020

BUG: read_parquet unexpected output with pyarrow 0.16.0 and nullable usigned int dtype

Bug

IO Parquetparquet, featherparquet, feather

NA - MaskedArraysRelated to pd.NA and nullable extension arraysRelated to pd.NA and nullable extension arrays

Status: Closed (completed).

#31896 In pandas-dev/pandas;

· by cat-Yu was closed on Feb 12, 2020

pandas.DataFrame.reindex_like throws if called from a derived class instance

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#31925 In pandas-dev/pandas;

· by lguyot was closed on Mar 11, 2020

pd.ExcelFile closes stream on destruction in pandas 1.0.0

IO Excelread_excel, to_excelread_excel, to_excel

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#31467 In pandas-dev/pandas;

· by johny-b was closed on Mar 12, 2020

BUG: pd.NA doesn't pickle/unpickle faithfully

Bug

IO Pickleread_pickle, to_pickleread_pickle, to_pickle

NA - MaskedArraysRelated to pd.NA and nullable extension arraysRelated to pd.NA and nullable extension arrays

Status: Closed (completed).

#31847 In pandas-dev/pandas;

· by tsoernes was closed on Mar 2, 2020

pandas 1.0.1 read_csv() is broken for some file-like objects

IO CSVread_csv, to_csvread_csv, to_csv

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#31819 In pandas-dev/pandas;

· by sasanquaneuf was closed on Mar 11, 2020

<code>Series.replace</code> fails on categoricals with list

CategoricalCategorical Data TypeCategorical Data Type

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#31720 In pandas-dev/pandas;

· by bnaul was closed on Feb 17, 2020

GroupBy aggregation of DataFrame with MultiIndex columns breaks with custom function

Groupby

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#31777 In pandas-dev/pandas;

· by sbitzer was closed on Mar 12, 2020

Crash when using align between a Series and a DataFrame and ffill (or bfill) method

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#31785 In pandas-dev/pandas;

· by m-lal was closed on Feb 9, 2020

MemoryError when using series.rolling().corr(other) with &gt;1.0

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#31789 In pandas-dev/pandas;

· by mdering was closed on Feb 10, 2020

REGR: cumsum regression with groupby call to agg

Groupby

Numeric OperationsArithmetic, Comparison, and Logical operationsArithmetic, Comparison, and Logical operations

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

ReshapingConcat, Merge/Join, Stack/Unstack, ExplodeConcat, Merge/Join, Stack/Unstack, Explode

Status: Closed (completed).

#31802 In pandas-dev/pandas;

· by mattharrison was closed on Mar 11, 2020

groupby().agg() calls the user function for an extra time with empty inputs in 1.0.0

Groupby

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#31760 In pandas-dev/pandas;

· by icexelloss was closed on Feb 21, 2020

<code>raw=True</code> no longer applies to groupby().rolling() in 1.0.0

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Windowrolling, ewma, expandingrolling, ewma, expanding

Status: Closed (completed).

#31754 In pandas-dev/pandas;

· by icexelloss was closed on Feb 10, 2020

BUG: setitem on string dtype with slices fails

Bug

IndexingRelated to indexing on series/frames, not to indexes themselvesRelated to indexing on series/frames, not to indexes themselves

Status: Closed (completed).

#31772 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Feb 12, 2020

REGR: Timestamp subtraction raises TypeError, Non informative

DatetimeDatetime data dtypeDatetime data dtype

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#31774 In pandas-dev/pandas;

· by sbrugman was closed on Mar 11, 2020

Categorical.from_codes fails for the (new nullable) Int64 dtype

Bug

CategoricalCategorical Data TypeCategorical Data Type

ConstructorsSeries/DataFrame/Index/pd.array ConstructorsSeries/DataFrame/Index/pd.array Constructors

Status: Closed (completed).

#31779 In pandas-dev/pandas;

· by mila was closed on Feb 12, 2020

Rolling Apply Docs Broken

Docs

Status: Closed (completed).

#31762 In pandas-dev/pandas;

· by WillAyd was closed on Mar 10, 2020

REGR: AssertionError when subtracting Timestamp-valued DataFrames with non-indentical column index

Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolatenp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate

Numeric OperationsArithmetic, Comparison, and Logical operationsArithmetic, Comparison, and Logical operations

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#31623 In pandas-dev/pandas;

· by DomKennedy was closed on Feb 19, 2020

pd.NA is converted to {} instead of null with pd.DataFrame.to_json

IO JSONread_json, to_json, json_normalizeread_json, to_json, json_normalize

NA - MaskedArraysRelated to pd.NA and nullable extension arraysRelated to pd.NA and nullable extension arrays

Status: Closed (completed).

#31615 In pandas-dev/pandas;

· by pvieito was closed on Feb 8, 2020

Pandas excel output specify column names to write is broken in 1.0.0

Bug

IO Excelread_excel, to_excelread_excel, to_excel

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#31677 In pandas-dev/pandas;

· by mikemc3 was closed on Feb 6, 2020

Reindex on nearest datetime gives UFuncTypeError - subtract with dtype('&lt;M8[ns]') and dtype('O')

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#31964 In pandas-dev/pandas;

· by andrewcooke was closed on Feb 21, 2020

BUG: groupby-nunique modifies null values

Bug

RegressionFunctionality that used to work in a prior pandas versionFunctionality that used to work in a prior pandas version

Status: Closed (completed).

#31950 In pandas-dev/pandas;

· by thomas-reineking-by was closed on Feb 23, 2020

Construction of Categorical from array with pd.NA failing

CategoricalCategorical Data TypeCategorical Data Type

NA - MaskedArraysRelated to pd.NA and nullable extension arraysRelated to pd.NA and nullable extension arrays

Status: Closed (completed).

#31927 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Feb 23, 2020

BUG: DataFrame.convert_dtypes fails on column that is already "string" dtype

Bug

Status: Closed (completed).

#31731 In pandas-dev/pandas;

· by ghost was closed on Feb 12, 2020

Bug in Series.str.repeat with string dtype and sequence of repeats

Missing-datanp.nan, pd.NaT, pd.NA, dropna, isnull, interpolatenp.nan, pd.NaT, pd.NA, dropna, isnull, interpolate

NA - MaskedArraysRelated to pd.NA and nullable extension arraysRelated to pd.NA and nullable extension arrays

StringsString extension data type and string dataString extension data type and string data

Status: Closed (completed).

#31632 In pandas-dev/pandas;

· by TomAugspurger was closed on Mar 10, 2020