pandas issues | Ecosyste.ms: OpenCollective

False positive SettingWithCopyWarning when just taking subset of columns

github.com/pandas-dev/pandas - jorisvandenbossche opened this issue over 7 years ago

Importing pandas module breaks expected behavior of Thread[ed] script

github.com/pandas-dev/pandas - christian-eriksson opened this issue over 7 years ago

API/DEPR: Deprecate inplace parameter

github.com/pandas-dev/pandas - gfyoung opened this issue over 7 years ago

More memory efficient hash tables

github.com/pandas-dev/pandas - rohanp opened this issue over 7 years ago

Categorical handles imaginary values incorrectly

github.com/pandas-dev/pandas - TomAugspurger opened this issue over 7 years ago

BUG: Bins are unexpected for qcut when the edges are duplicated

github.com/pandas-dev/pandas - artturib opened this issue almost 8 years ago

Documentation on Performance considerations

github.com/pandas-dev/pandas - Dr-Irv opened this issue almost 8 years ago

Index order of joined frame does not respect the order of left frame when right contains duplicates

github.com/pandas-dev/pandas - Midnighter opened this issue almost 8 years ago

ERR: DataFrame can get into unprintable state

github.com/pandas-dev/pandas - chris-b1 opened this issue almost 8 years ago

ENH: support .fillna(method=,limit=Timedelta)

github.com/pandas-dev/pandas - jreback opened this issue almost 8 years ago

HDFStore() create a new file by mode 'a' ,but file name can't be incorrect

github.com/pandas-dev/pandas - imelee opened this issue almost 8 years ago

When using to_sql(), continue if duplicate primary keys are detected?

github.com/pandas-dev/pandas - rosstripi opened this issue almost 8 years ago

Moving some core team members to inactive status

github.com/pandas-dev/pandas-governance - wesm opened this pull request almost 8 years ago

migrate pandas issues

github.com/pandas-dev/pandas-msgpack - jreback opened this issue almost 8 years ago

BLD: auto wheel builds

github.com/pandas-dev/pandas-msgpack - jreback opened this issue almost 8 years ago

Add Chris Bartak (@chris-b1)

github.com/pandas-dev/pandas-governance - jorisvandenbossche opened this pull request almost 8 years ago

Series.map on a Categorical with a function only processes each unique value once

github.com/pandas-dev/pandas - Kodiologist opened this issue almost 8 years ago

ENH: enable skipna on groupby reduction ops

github.com/pandas-dev/pandas - jreback opened this issue almost 8 years ago

DOC: inconsistent docs-string signatures for shared functions

github.com/pandas-dev/pandas - jreback opened this issue almost 8 years ago

API: expose to_numeric/to_datetime/to_timedelta methods on Series

github.com/pandas-dev/pandas - jreback opened this issue almost 8 years ago

Huge performance hit in get_indexer_non_unique

github.com/pandas-dev/pandas - horta opened this issue almost 8 years ago

BUG: read_csv with date_parser lock file open on failure

github.com/pandas-dev/pandas - rsheftel opened this issue about 8 years ago

Spurious casting to float when assigning both integers and floats

github.com/pandas-dev/pandas - toobaz opened this issue about 8 years ago

Add institutional partners

github.com/pandas-dev/pandas-governance - jorisvandenbossche opened this pull request about 8 years ago

`sort=False` option to stack/unstack/pivot

github.com/pandas-dev/pandas - naught101 opened this issue about 8 years ago

Pre-compute the size of an outer merge and raise MemoryError if merge will be too large

github.com/pandas-dev/pandas - mproffitt opened this issue about 8 years ago

Treat Series as 1-column dataframe in concat with dataframe

github.com/pandas-dev/pandas - jcrist opened this issue about 8 years ago

Severe performance problems with multi-index joins

github.com/pandas-dev/pandas - SReicheltPTV opened this issue about 8 years ago

value_counts failed on unique list values

github.com/pandas-dev/pandas - name-yy opened this issue over 8 years ago

BUG: need to block split when filling na

github.com/pandas-dev/pandas - jreback opened this issue over 8 years ago

to_sql function takes forever to insert in oracle database

github.com/pandas-dev/pandas - rajattjainn opened this issue over 8 years ago

BUG: Python operator 'in' behaves in two different ways on Series object

github.com/pandas-dev/pandas - griai opened this issue over 8 years ago

Unexpected results for the mean of a DataFrame of ufloat from the uncertainties package.

github.com/pandas-dev/pandas - bgatessucks opened this issue over 8 years ago

SettingWithCopy dependence on reference count

github.com/pandas-dev/pandas - pkch opened this issue over 8 years ago

CoC: add committee members to CoC text

github.com/pandas-dev/pandas-governance - jorisvandenbossche opened this pull request over 8 years ago

DOC: more documentation that pandas by-default aligns when setting

github.com/pandas-dev/pandas - IamGianluca opened this issue over 8 years ago

Incorrect timedelta type coercion when doing in-place .loc expansion

github.com/pandas-dev/pandas - bmcfee opened this issue over 8 years ago

ENH: df.add fill_value NotImplementedError

github.com/pandas-dev/pandas - neverforgit opened this issue over 8 years ago

PERF: large subset of block cast

github.com/pandas-dev/pandas - chris-b1 opened this issue over 8 years ago

Inconsistent Handling of na_values and converters in read_csv

github.com/pandas-dev/pandas - gfyoung opened this issue over 8 years ago

BUG: groupby, as_index=False still returning group variable as index

github.com/pandas-dev/pandas - nickeubank opened this issue over 8 years ago

resample() / DatetimeIndexResampler is not resampling according to the given frequency rule

github.com/pandas-dev/pandas - gabrielcnr opened this issue almost 9 years ago

BUG: Series.argsort() incorrect handling of NaNs

github.com/pandas-dev/pandas - seth-p opened this issue almost 9 years ago

BUG: Week ('W') does not work as suffixes for a string passed to Timedelta.

github.com/pandas-dev/pandas - belteshassar opened this issue almost 9 years ago

PERF: use lib.write_csv_rows for encoded data when writing to csv

github.com/pandas-dev/pandas - jreback opened this issue almost 9 years ago

ENH: add .dropinf() and/or .dropna(drop_inf=True) methods

github.com/pandas-dev/pandas - adrivsh opened this issue almost 9 years ago

append a categorical with different categories to the existing

github.com/pandas-dev/pandas - dneise opened this issue almost 9 years ago

Cython-optimized expanding apply transformations

github.com/pandas-dev/pandas - bschreck opened this issue almost 9 years ago

ENH: Make use of RangeIndex in DatetimeIndex

github.com/pandas-dev/pandas - kawochen opened this issue about 9 years ago

use_inf_as_null makes fillna extremely slow

github.com/pandas-dev/pandas - Winand opened this issue about 9 years ago

Assignment to mixed-type DataFrame with float32 coerce to float64

github.com/pandas-dev/pandas - fnielsen opened this issue about 9 years ago

Add Code of Conduct

github.com/pandas-dev/pandas-governance - TomAugspurger opened this pull request about 9 years ago

Initial pandas governance documents

github.com/pandas-dev/pandas-governance - wesm opened this pull request about 9 years ago

BUG: fillna('') does not replace NaT

github.com/pandas-dev/pandas - jreback opened this issue about 9 years ago

BUG/API: Clarify the behaviour of fillna downcasting

github.com/pandas-dev/pandas - sinhrks opened this issue over 9 years ago

df.plot(ax=ax) AttributeError: 'Axes' object has no attribute 'is_first_col'

github.com/pandas-dev/pandas - dragoljub opened this issue over 9 years ago

PERF: refactor ExcelFormatter

github.com/pandas-dev/pandas - chris-b1 opened this issue over 9 years ago

groupby.nth with dropna is buggy

github.com/pandas-dev/pandas - behzadnouri opened this issue over 9 years ago

read_sql should accept a sql_params parameter

github.com/pandas-dev/pandas - scls19fr opened this issue over 9 years ago

TST/API: Simplify testing functions API

github.com/pandas-dev/pandas - sinhrks opened this issue over 9 years ago

BUG: crosstab(dropna=False) does not work like value_counts(dropna=False)

github.com/pandas-dev/pandas - rosnfeld opened this issue over 9 years ago

Add inplace option to DataFrame.update()

github.com/pandas-dev/pandas - dov opened this issue over 9 years ago

BUG: GroupBy.idxmax breaks when grouping by Categorical with unused categories

github.com/pandas-dev/pandas - jorisvandenbossche opened this issue over 9 years ago

Expose the blocks API and disable automatic consolidation

github.com/pandas-dev/pandas - shoyer opened this issue over 9 years ago

High memory usage pivot_table

github.com/pandas-dev/pandas - cangermueller opened this issue over 9 years ago

BUG: partial nan levels missing when grouping

github.com/pandas-dev/pandas - jreback opened this issue over 9 years ago

DOC: splitting the IO docs into separate pages

github.com/pandas-dev/pandas - jorisvandenbossche opened this issue over 9 years ago

Add to_fwf support

github.com/pandas-dev/pandas - cancan101 opened this issue over 9 years ago

New feature/enhancement request: Merge dataframes where one value is between two others

github.com/pandas-dev/pandas - stoffprof opened this issue over 9 years ago

Poor read_csv performance on file with many columns

github.com/pandas-dev/pandas - tloredo opened this issue almost 10 years ago

Status of io.sql.get_schema as public function?

github.com/pandas-dev/pandas - jorisvandenbossche opened this issue almost 10 years ago

pd.merge for outer with empty dataframe on the left side results in merged dataframe with the key column not being first

github.com/pandas-dev/pandas - kundapur opened this issue almost 10 years ago

Grouped plot legend does not create legend entry for first group

github.com/pandas-dev/pandas - michaelaye opened this issue almost 10 years ago

False negative on SettingWithCopyWarning

github.com/pandas-dev/pandas - adamklein opened this issue almost 10 years ago

pandas.DataFrame.plot(): Labels do not appear in legend

github.com/pandas-dev/pandas - JohnNapier opened this issue almost 10 years ago

BUG: DataFrame.unstack() does not properly sort list of levels

github.com/pandas-dev/pandas - seth-p opened this issue almost 10 years ago

Support pad/backfill/nearest reindexing even for unsorted indexes by storing a sorted index?

github.com/pandas-dev/pandas - shoyer opened this issue almost 10 years ago

BUG: DataFrame Apply unexpectedly casts types (uint64)

github.com/pandas-dev/pandas - bdmcfar opened this issue almost 10 years ago

API: consistent float_format specification

github.com/pandas-dev/pandas - jorisvandenbossche opened this issue about 10 years ago

Use KDTrees to support nearest neighbor queries/joins on MultiIndexes?

github.com/pandas-dev/pandas - shoyer opened this issue about 10 years ago

ENH: implement clip for sparse structures

github.com/pandas-dev/pandas - wholmgren opened this issue about 10 years ago

Constructing DataFrame from dict

github.com/pandas-dev/pandas - bmu opened this issue about 10 years ago

np.float16 support

github.com/pandas-dev/pandas - datapythonista opened this issue about 10 years ago

drop_duplicates() on a float64 type column containing NaN values will cause CPU 100% occupied forever

github.com/pandas-dev/pandas - scratdata opened this issue about 10 years ago

COMPAT: Floating point fractional hours for timedeltas gives unexpected precision issue

github.com/pandas-dev/pandas - ahjulstad opened this issue about 10 years ago

Use multi-row inserts for massive speedups on to_sql over high latency connections

github.com/pandas-dev/pandas - maxgrenderjones opened this issue about 10 years ago

ENH: other join types than 'left' for .update

github.com/pandas-dev/pandas - maxgrenderjones opened this issue about 10 years ago

bug in tz_localize when summer/winter time change

github.com/pandas-dev/pandas - gbakalian opened this issue over 10 years ago

Klib upgrade (factorizing performance increase)

github.com/pandas-dev/pandas - CarstVaartjes opened this issue over 10 years ago

BUG: columns misaligned in repr when having >10 columns with integer index

github.com/pandas-dev/pandas - jorisvandenbossche opened this issue over 10 years ago

ENH: read_csv to have a parse_timedelta kw to automatically parse into timedelta64

github.com/pandas-dev/pandas - jreback opened this issue over 10 years ago

Allowing the index to be referenced by name, like a column

github.com/pandas-dev/pandas - makmanalp opened this issue over 10 years ago

BUG: coercion of non-M8[ns] in datetime ops

github.com/pandas-dev/pandas - jreback opened this issue over 10 years ago

API: disallow inplace setting with where and a non-np.nan value (GH7656)

github.com/pandas-dev/pandas - jreback opened this pull request over 10 years ago

BUG: option date_dayfirst does not function as expected

github.com/pandas-dev/pandas - clham opened this issue over 10 years ago

API: way to exclude the grouped column with apply

github.com/pandas-dev/pandas - jreback opened this issue over 10 years ago

DOC: freeze old whatsnew notes?

github.com/pandas-dev/pandas - jorisvandenbossche opened this issue almost 11 years ago

PERF: Cython or C implementation for reading fixed-width files (read_fwf)

github.com/pandas-dev/pandas - stevenmanton opened this issue almost 11 years ago

Allow multibyte separator / delimiter in read_csv() & read_table()

github.com/pandas-dev/pandas - dlcmh opened this issue almost 11 years ago

BUG df with 'index' as one name of a MultiIndex fails to save as HDFStore table

github.com/pandas-dev/pandas - glyg opened this issue about 11 years ago