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github.com/pandas-dev/pandas

Flexible and powerful data analysis / manipulation library for Python, providing labeled data structures similar to R data.frame objects, statistical functions, and much more
https://github.com/pandas-dev/pandas

ENH: Support rolling over one level of a MultiIndex

miccoli opened this issue over 4 years ago
ENH: Add number of missing values and cardinality to df.describe()

sorenwacker opened this issue over 4 years ago
ENH: Allow join based on conditional statement

wpdonders opened this issue over 4 years ago
BUG: unexpected behavior of json_normalize meta arg

evan-anderson-ts opened this issue over 4 years ago
BUG: to_numpy on empty dataframe allocates O(len(df)) array

huonw opened this issue over 4 years ago
BUG: setting with iloc and no labels does not effect certain data types

rhshadrach opened this issue over 4 years ago
Cython 3.0 Checklist

jbrockmendel opened this issue over 4 years ago
BUG: grouping with categorical interval columns

antipisa opened this issue over 4 years ago
API: argmin/argmax behaviour for nullable dtypes with skipna=False

jorisvandenbossche opened this issue over 4 years ago
API/BUG: Series.argmin/max with all-NaN data returns -1 ?

jorisvandenbossche opened this issue over 4 years ago
API: how strict should the equals() method be?

jorisvandenbossche opened this issue over 4 years ago
BUG: Local test fail due to change of botocore error handling

monferrand opened this issue over 4 years ago
Performance regression in rolling.Quantile.time_quantile

TomAugspurger opened this issue over 4 years ago
BUG: Cannot save categorical index to HDF5

jakeanq opened this issue over 4 years ago
COMPAT: add back block manager constructors to pandas.core.internals API

jorisvandenbossche opened this pull request over 4 years ago
API/BUG: freq retention in value_counts

jbrockmendel opened this issue almost 5 years ago
BUG: frequency attribute lost if datetimeindex is localized

rwijtvliet opened this issue almost 5 years ago
Vectorize DataFrame `first_valid_index()` and `last_valid_index()`

jkleint opened this issue almost 5 years ago
BUG: mix of int and pd.NA defaults to object dtype

eddy-geek opened this issue almost 5 years ago
ENH: add a float_precision='low' option to read_csv

gosuto-inzasheru opened this issue almost 5 years ago
ENH: Prettier printing of DataFrames with nested objects, discuss?

bwllc opened this issue almost 5 years ago
BUG: merge left and merge inner produce different index-order

rwijtvliet opened this issue almost 5 years ago
QST: Why is resample with high frequency faster than lower frequency

Bougeant opened this issue almost 5 years ago
API/DEPR: DataFrame/Series.replace is too complex.

simonjayhawkins opened this issue almost 5 years ago
Consider adding isnative property to StringDtype?

krassowski opened this issue almost 5 years ago
API: EA interface - strictness of _from_sequence

jorisvandenbossche opened this issue almost 5 years ago
Support pydata/sparse arrays in DataFrame

TomAugspurger opened this issue almost 5 years ago
BUG: truncated repr with pd.NA in object dtype column shows "NaN"

HYChou0515 opened this issue almost 5 years ago
pd.NA in object dtype

simonjayhawkins opened this issue almost 5 years ago
TST: Improve searchsorted test coverage

dsaxton opened this issue almost 5 years ago
mean with skipna either True or False on groupby gives error

navankurverma opened this issue almost 5 years ago
Incorrect result with DateOffset.rollback for normalize=True

kdebrab opened this issue almost 5 years ago
Fix capitalization among headings in documentation files

tonywu1999 opened this issue almost 5 years ago
TST: Seemingly non-deterministic order of value_counts

SaturnFromTitan opened this issue almost 5 years ago
DataFrame output too wide / not truncated properly

emsems opened this issue almost 5 years ago
Include tests for pd.NA and pd.NaT in tests/base/test_ops.py

SaturnFromTitan opened this issue almost 5 years ago
BLD: Clang error while installing snappy in requirements-dev.txt

kendricng opened this issue almost 5 years ago
BUG: Groupby.transform with tshift giving incorrect result

ryankarlos opened this issue almost 5 years ago
Joining on a nullable column

dsaxton opened this issue almost 5 years ago
API: distinguish NA vs NaN in floating dtypes

jorisvandenbossche opened this issue almost 5 years ago
merge coerces to left dtype even with how='right'

MarcoGorelli opened this issue almost 5 years ago
BUG: wrong errors when indexing with list that includes pd.NA

jorisvandenbossche opened this issue almost 5 years ago
`to_json` of Series with period dtype results in AttributeError

gerrymanoim opened this issue almost 5 years ago
Add generic buffer (s3) support to read_hdf

pedroreys opened this issue almost 5 years ago
`test_maybe_promote_int_with_int` error on 32bit platform

toddrme2178 opened this issue almost 5 years ago
pd.read_csv automatically casts strings into int/float

rusiano opened this issue almost 5 years ago
PERF: Indexing a multi-index is a lot slower

valtron opened this issue almost 5 years ago
MyPy doesn't recognize scalar arithmetic for pandas classes

WillAyd opened this issue about 5 years ago
API: inconsistency in casting back to its EA dtype (try_cast_to_ea)

jorisvandenbossche opened this issue about 5 years ago
PERF: DataFrame.mean() is slow with datetime columns

richierocks opened this issue about 5 years ago
REF: remove method and tolerance keywords from Index.get_loc

jbrockmendel opened this issue about 5 years ago
Suggestion: remove tests from the distribution

vfilimonov opened this issue about 5 years ago
BUG: Support win_type parameter with groupby.rolling

ghost opened this issue about 5 years ago
PERF: groupby with many empty groups memory blowup

jbrockmendel opened this issue about 5 years ago
Strange behaviour of pd.DataFrame.drop() with inplace argument

DenisVorotyntsev opened this issue about 5 years ago
TYPING: keywords in df.sort_values and sr.sort_values cannot be annotated

charlesdong1991 opened this issue about 5 years ago
ENH: Requested IO readers/writers

jbrockmendel opened this issue about 5 years ago
tm.assert_series_equal checking on Integer EA should be exact by default?

simonjayhawkins opened this issue about 5 years ago
errors='ignore' does not work on df.replace({col : type}) if col not found

climatebrad opened this issue about 5 years ago
ENH: Add numba engine for rolling apply

mroeschke opened this pull request about 5 years ago
Thousands separator for to_csv

ghisvail opened this issue about 5 years ago
API: return "correct" missing value scalar from Categorical?

jorisvandenbossche opened this issue about 5 years ago
Added FutureWarning to Series.str.__iter__

SaturnFromTitan opened this pull request about 5 years ago
Use an enum for infer_dtype return values?

TomAugspurger opened this issue about 5 years ago
Adding (Insert or update if key exists) option to .to_sql #14553

cvonsteg opened this pull request about 5 years ago
startingMonth ignored on non-unitary Quarter periods

aulemahal opened this issue about 5 years ago
DEPR: is_extension_type

jbrockmendel opened this pull request about 5 years ago
ENH: Group By Grouping set /Cube/ Rollup

rsdpyenugula opened this issue about 5 years ago
Memory leak in Dataframe.memory_usage

hyfjjjj opened this issue about 5 years ago
Style problem using Styler.set_table_styles

Tiarles opened this issue about 5 years ago
Named aggregations with multiple columns

erfannariman opened this issue about 5 years ago
config.register_option allows registering invalid options

simonjayhawkins opened this issue over 5 years ago
pd.concat inconsistent coercion of None depending of value in rows

ConorSheehan1 opened this issue over 5 years ago
Allow NaN Intervals and to allow NaN as a Groupby Category

JoshuaC3 opened this issue over 5 years ago
DataFrame.replace with dict does not work with Duplicate Column Labels

CrystalWindSnake opened this issue over 5 years ago
Migrate 32-bit linux build

TomAugspurger opened this issue over 5 years ago
datetime64[ns] dtype coerced to object after pd.concat(axis=1)

atlasstrategic opened this issue over 5 years ago
Picking up issue#17304 from closed PR

Alexandreae opened this pull request over 5 years ago
Upsampling time series produces noisy derivative

ytsaplin opened this issue over 5 years ago