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Add chunksize support to to_json

Enhancement

IO JSONread_json, to_json, json_normalizeread_json, to_json, json_normalize

Status: Open.

#22853 In pandas-dev/pandas;

· julienfr112 opened on Sep 27, 2018

using to_dict with the 'records' orient produces different results from the default one

API - ConsistencyInternal Consistency of API/BehaviorInternal Consistency of API/Behavior

Bug

Needs DiscussionRequires discussion from core team before further actionRequires discussion from core team before further action

Status: Open.

#29824 In pandas-dev/pandas;

· finete opened on Nov 24, 2019

ENH: Retrieve SqlAlchemy Mapped Attributes with read_sql

Enhancement

IO SQLto_sql, read_sql, read_sql_queryto_sql, read_sql, read_sql_query

Status: Open.

#46100 In pandas-dev/pandas;

· adriantre opened on Feb 21, 2022

PERF: Memory duplication spotted when dropping columns/axis from a dataframe with <code>inplace=True</code>

Copy / view semantics

PerformanceMemory or execution speed performanceMemory or execution speed performance

Status: Open.

#48682 In pandas-dev/pandas;

· ArcRiiad opened on Sep 21, 2022

BUG: setting raw=True in the Dataframe.apply function causes a ValueError

ApplyApply, Aggregate, Transform, MapApply, Aggregate, Transform, Map

Bug

Status: Open.

#34822 In pandas-dev/pandas;

· lfdversluis opened on Jun 16, 2020

MultiIndex reindex should behave like Index.

Enhancement

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

MultiIndex

Status: Open.

#7895 In pandas-dev/pandas;

· rockg opened on Aug 1, 2014

Upsampling a time-series is missing an option to properly deal with the end

Enhancement

PeriodPeriod data typePeriod data type

Resampleresample methodresample method

Status: Open.

#10449 In pandas-dev/pandas;

· filmor opened on Jun 26, 2015

Produce representative dataframes for benchmarking

PerformanceMemory or execution speed performanceMemory or execution speed performance

Status: Open.

#15911 In pandas-dev/pandas;

· mrocklin opened on Apr 5, 2017

pd.DataFrame.__deepcopy__ is does not work when elements are lists (nested)

Bug

Nested DataData where the values are collections (lists, sets, dicts, objects, etc.).Data where the values are collections (lists, sets, dicts, objects, etc.).

Status: Open.

#17406 In pandas-dev/pandas;

· mortonjt opened on Aug 31, 2017

Multiindex query

Bug

expressionspd.eval, querypd.eval, query

MultiIndex

Status: Open.

#13348 In pandas-dev/pandas;

· wcbeard opened on Jun 2, 2016

DataFrame.plot doesn't handle axis titles for sharex=row correctly

Bug

Visualizationplottingplotting

Status: Open.

#21290 In pandas-dev/pandas;

· Austrianguy opened on Jun 1, 2018

pandas.dataframe.values floating number changes automatically

Bug

InternalsRelated to non-user accessible pandas implementationRelated to non-user accessible pandas implementation

Status: Open.

#21885 In pandas-dev/pandas;

· snowflake01986 opened on Jul 13, 2018