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Grouping by index and column fails on DataFrame with single index

Bug

Groupby

Status: Closed (completed).

#14327 In pandas-dev/pandas;

· by jonmmease was closed on Oct 15, 2016

Inconsistent behaviour on empty RangeIndex intersection

Bug

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

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

Status: Closed (completed).

#14364 In pandas-dev/pandas;

· by maxencedb was closed on Oct 24, 2016

ValueError when trying to compute Quantile

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).

#14357 In pandas-dev/pandas;

· by Rubyj was closed on Nov 2, 2016

Index._maybe_cast_slice_bound switched meaning of left/right

Bug

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

Status: Closed (completed).

#14354 In pandas-dev/pandas;

· by mrocklin was closed on Oct 27, 2016

Error when key-only Grouper is passed to groupby in a list

Bug

Groupby

Status: Closed (completed).

#14334 In pandas-dev/pandas;

· by jonmmease was closed on Oct 25, 2016

TST: failing test at tseries/tests/test_base.py TestDatetimeIndexOps test_nat

Testingpandas testing functions or related to the test suitepandas testing functions or related to the test suite

Status: Closed (completed).

#14345 In pandas-dev/pandas;

· by MattRijk was closed on Oct 6, 2016

PERF: Period factorization very slow in 0.19.0

PerformanceMemory or execution speed performanceMemory or execution speed performance

PeriodPeriod data typePeriod data type

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

Status: Closed (completed).

#14338 In pandas-dev/pandas;

· by bmoscon was closed on Oct 15, 2016

BUG: DataFrame.insert with allow_duplicates=True fails when already duplicates present

Bug

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

Status: Closed (completed).

#14291 In pandas-dev/pandas;

· by mbochk was closed on Oct 24, 2016

.info() fails with CategoricalIndex in the columns

CategoricalCategorical Data TypeCategorical Data Type

Output-Formatting__repr__ of pandas objects, to_string__repr__ of pandas objects, to_string

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

Status: Closed (completed).

#14298 In pandas-dev/pandas;

· by TomAugspurger was closed on Nov 3, 2016

DatetimeIndex union fails in 0.19rc1 when constructed from differences in DatetimeIndexes

Bug

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).

#14323 In pandas-dev/pandas;

· by Liam3851 was closed on Oct 24, 2016

Inconsistent behavior in Timestamp for large negative values

Bug

DatetimeDatetime data dtypeDatetime data dtype

Status: Closed (completed).

#14415 In pandas-dev/pandas;

· by ssanderson was closed on Oct 20, 2016

read_csv and others derived from _read close user-provided filehandles

Bug

IO CSVread_csv, to_csvread_csv, to_csv

IO DataIO issues that don't fit into a more specific labelIO issues that don't fit into a more specific label

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

Status: Closed (completed).

#14418 In pandas-dev/pandas;

· by ebolyen was closed on Nov 2, 2016

BUG: Line delimited json is breaks if string includes <code>}</code>

Bug

IO JSONread_json, to_json, json_normalizeread_json, to_json, json_normalize

Status: Closed (completed).

#14390 In pandas-dev/pandas;

· by joshowen was closed on Oct 15, 2016

AmbiguousTimeError: Cannot infer dst time from Timestamp('2015-11-01 01:00:03'), try using the 'ambiguous' argument

Bug

TimezonesTimezone data dtypeTimezone data dtype

Status: Closed (completed).

#14402 In pandas-dev/pandas;

· by adamschultz was closed on Oct 13, 2016

PERF: to_json very slow with lines=True

IO JSONread_json, to_json, json_normalizeread_json, to_json, json_normalize

PerformanceMemory or execution speed performanceMemory or execution speed performance

Status: Closed (completed).

#14408 In pandas-dev/pandas;

· by joshowen was closed on Oct 15, 2016

concat with axis='rows'

Bug

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

Status: Closed (completed).

#14369 In pandas-dev/pandas;

· by AlbertDeFusco was closed on Oct 15, 2016

BUG: concat with dataframes heterogeneous in length and tuple keys

Bug

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).

#14438 In pandas-dev/pandas;

· by dubourg was closed on Oct 20, 2016

DOC/BUG: pd.to_datetime example produces different results from documentation

DatetimeDatetime data dtypeDatetime data dtype

Docs

Status: Closed (completed).

#14448 In pandas-dev/pandas;

· by AnkurDedania was closed on Oct 24, 2016

read_csv incompatible with newstr and future

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).

#14477 In pandas-dev/pandas;

· by larssono was closed on Oct 26, 2016

RLS: v0.19.1

Release

Status: Closed (completed).

#14474 In pandas-dev/pandas;

· by jorisvandenbossche was closed on Nov 7, 2016

CI: numpy dev started failing

Compatpandas objects compatability with Numpy or Python functionspandas objects compatability with Numpy or Python functions

Status: Closed (completed).

#14489 In pandas-dev/pandas;

· by jreback was closed on Oct 26, 2016

groupby transform producing different results depending on whether a lambda function was passed or a numpy function was passed

Bug

Groupby

Status: Closed (completed).

#14457 In pandas-dev/pandas;

· by pirsquared was closed on Oct 25, 2016

pd.Series.asof performance regression: 14x slower

PerformanceMemory or execution speed performanceMemory or execution speed performance

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

Status: Closed (completed).

#14461 In pandas-dev/pandas;

· by laudney was closed on Oct 26, 2016

Conflict b/w skiprows and default quotechar kwargs to pandas.read_table

Bug

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).

#14459 In pandas-dev/pandas;

· by rahulporuri was closed on Oct 31, 2016

Dataframe constructor fails when given dict with None value

Bug

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

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

Status: Closed (completed).

#14381 In pandas-dev/pandas;

· by gitj was closed on Oct 31, 2016