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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
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
sorenwacker opened this issue over 4 years ago
ENH: Allow join based on conditional statement
wpdonders opened this issue over 4 years ago
wpdonders opened this issue over 4 years ago
Extreme performance issue in pandas 1.0.3 when setting a new column with DatetimeIndex
derHeinzer opened this issue over 4 years ago
derHeinzer 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
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
huonw opened this issue over 4 years ago
BUG: wrong behaviour / segfaults when data from Index have been unintentionally modified
rangeonnicolas opened this issue over 4 years ago
rangeonnicolas 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
rhshadrach opened this issue over 4 years ago
Cython 3.0 Checklist
jbrockmendel opened this issue over 4 years ago
jbrockmendel opened this issue over 4 years ago
BUG: pd.concat inconsistent behaviour with empty and tz-aware Series
dave-cz opened this issue over 4 years ago
dave-cz opened this issue over 4 years ago
BUG: grouping with categorical interval columns
antipisa opened this issue over 4 years ago
antipisa opened this issue over 4 years ago
BUG: Join of DataFrames with MultiIndex does not keep order of index
rikardn opened this issue over 4 years ago
rikardn 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
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
jorisvandenbossche opened this issue over 4 years ago
API: how strict should the equals() method be?
jorisvandenbossche opened this issue over 4 years ago
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
monferrand opened this issue over 4 years ago
Performance regression in rolling.Quantile.time_quantile
TomAugspurger opened this issue over 4 years ago
TomAugspurger opened this issue over 4 years ago
BUG: Cannot save categorical index to HDF5
jakeanq opened this issue over 4 years ago
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
jorisvandenbossche opened this pull request over 4 years ago
ENH: Support setting dataset name in to_hdf and datasets in hdf5 root node
maxnoe opened this issue over 4 years ago
maxnoe opened this issue over 4 years ago
API/BUG: freq retention in value_counts
jbrockmendel opened this issue almost 5 years ago
jbrockmendel opened this issue almost 5 years ago
BUG: multiplying Business Hour (BH) offset by zero results in strange behavior
ahyerman opened this issue almost 5 years ago
ahyerman opened this issue almost 5 years ago
BUG: frequency attribute lost if datetimeindex is localized
rwijtvliet opened this issue almost 5 years ago
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
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
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
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
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
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
Bougeant opened this issue almost 5 years ago
API/DEPR: DataFrame/Series.replace is too complex.
simonjayhawkins opened this issue almost 5 years ago
simonjayhawkins opened this issue almost 5 years ago
Consider adding isnative property to StringDtype?
krassowski opened this issue almost 5 years ago
krassowski opened this issue almost 5 years ago
API: EA interface - strictness of _from_sequence
jorisvandenbossche opened this issue almost 5 years ago
jorisvandenbossche opened this issue almost 5 years ago
Support pydata/sparse arrays in DataFrame
TomAugspurger opened this issue almost 5 years ago
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
HYChou0515 opened this issue almost 5 years ago
pd.NA in object dtype
simonjayhawkins opened this issue almost 5 years ago
simonjayhawkins opened this issue almost 5 years ago
TST: Improve searchsorted test coverage
dsaxton opened this issue almost 5 years ago
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
navankurverma opened this issue almost 5 years ago
Incorrect result with DateOffset.rollback for normalize=True
kdebrab opened this issue almost 5 years ago
kdebrab opened this issue almost 5 years ago
Fix capitalization among headings in documentation files
tonywu1999 opened this issue almost 5 years ago
tonywu1999 opened this issue almost 5 years ago
TST: Seemingly non-deterministic order of value_counts
SaturnFromTitan opened this issue almost 5 years ago
SaturnFromTitan opened this issue almost 5 years ago
DataFrame output too wide / not truncated properly
emsems opened this issue almost 5 years ago
emsems opened this issue almost 5 years ago
incosistencies in dataframe.dtype.isin() - I am getting inconsistent with different runs on same code.
maleknia opened this issue almost 5 years ago
maleknia 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
SaturnFromTitan opened this issue almost 5 years ago
Memory leaks if an object is saved in a DataFrame and references the DataFrame
rbolgaryn opened this issue almost 5 years ago
rbolgaryn 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
kendricng opened this issue almost 5 years ago
BUG: Groupby.transform with tshift giving incorrect result
ryankarlos opened this issue almost 5 years ago
ryankarlos opened this issue almost 5 years ago
local test failure - pandas/tests/io/test_parquet.py::TestBasic::test_compression[fastparquet-snappy]
simonjayhawkins opened this issue almost 5 years ago
simonjayhawkins opened this issue almost 5 years ago
Joining on a nullable column
dsaxton opened this issue almost 5 years ago
dsaxton opened this issue almost 5 years ago
API: distinguish NA vs NaN in floating dtypes
jorisvandenbossche opened this issue almost 5 years ago
jorisvandenbossche opened this issue almost 5 years ago
[FEATURE] Ability to pass regex module flags in DataFrame.replace while regex=True
vishnu-dev opened this issue almost 5 years ago
vishnu-dev opened this issue almost 5 years ago
Protecting sensitive columns while displaying data-frames at Jupyter notebook (feature request)
pavlovdog opened this issue almost 5 years ago
pavlovdog opened this issue almost 5 years ago
merge coerces to left dtype even with how='right'
MarcoGorelli opened this issue almost 5 years ago
MarcoGorelli opened this issue almost 5 years ago
pandas.Dataframe.interpolate() does not extrapolate even if it is asked to, depending on interpolation method
typorian opened this issue almost 5 years ago
typorian 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
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
gerrymanoim opened this issue almost 5 years ago
Add generic buffer (s3) support to read_hdf
pedroreys opened this issue almost 5 years ago
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
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
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
valtron opened this issue almost 5 years ago
query works for string data type columns with missing values but not for boolean indexing
tdpetrou opened this issue almost 5 years ago
tdpetrou opened this issue almost 5 years ago
AssertionError creating array with StringDtype instead of StringDtype(), can we have a friendlier error message?
gerritholl opened this issue about 5 years ago
gerritholl opened this issue about 5 years ago
MyPy doesn't recognize scalar arithmetic for pandas classes
WillAyd opened this issue about 5 years ago
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
jorisvandenbossche opened this issue about 5 years ago
PERF: DataFrame.mean() is slow with datetime columns
richierocks opened this issue about 5 years ago
richierocks opened this issue about 5 years ago
Pandas .plot() on regularly spaced timeseries result in slow plotting/interaction
rhkarls opened this issue about 5 years ago
rhkarls opened this issue about 5 years ago
as_index = False not working for applying groupby rolling agg to DataFrame
hsorsky opened this issue about 5 years ago
hsorsky 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
jbrockmendel opened this issue about 5 years ago
Suggestion: remove tests from the distribution
vfilimonov opened this issue about 5 years ago
vfilimonov opened this issue about 5 years ago
BUG: Support win_type parameter with groupby.rolling
ghost opened this issue about 5 years ago
ghost opened this issue about 5 years ago
PERF: groupby with many empty groups memory blowup
jbrockmendel opened this issue about 5 years ago
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
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
charlesdong1991 opened this issue about 5 years ago
ENH: Requested IO readers/writers
jbrockmendel opened this issue about 5 years ago
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
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
climatebrad opened this issue about 5 years ago
ENH: Add numba engine for rolling apply
mroeschke opened this pull request about 5 years ago
mroeschke opened this pull request about 5 years ago
SettingWithCopyWarning raised unnecessarily with .fillna() on df with multiple indices
rebeccachinn opened this issue about 5 years ago
rebeccachinn opened this issue about 5 years ago
pandas.read_sql_table switches double quotation wrapping keys and values to single quotation in JSON columns
Magicbeanbuyer opened this issue about 5 years ago
Magicbeanbuyer opened this issue about 5 years ago
Thousands separator for to_csv
ghisvail opened this issue about 5 years ago
ghisvail opened this issue about 5 years ago
API: return "correct" missing value scalar from Categorical?
jorisvandenbossche opened this issue about 5 years ago
jorisvandenbossche opened this issue about 5 years ago
Using to_json/read_json with orient='table' on a DataFrame with a single level MultiIndex does not work
larrymouse opened this issue about 5 years ago
larrymouse opened this issue about 5 years ago
Added FutureWarning to Series.str.__iter__
SaturnFromTitan opened this pull request about 5 years ago
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
TomAugspurger opened this issue about 5 years ago
ENH: Allow opting in to new dtypes on I/O routines via keyword to I/O routines
Dr-Irv opened this issue about 5 years ago
Dr-Irv 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
cvonsteg opened this pull request about 5 years ago
startingMonth ignored on non-unitary Quarter periods
aulemahal opened this issue about 5 years ago
aulemahal opened this issue about 5 years ago
DEPR: is_extension_type
jbrockmendel opened this pull request about 5 years ago
jbrockmendel opened this pull request about 5 years ago
ENH: Group By Grouping set /Cube/ Rollup
rsdpyenugula opened this issue about 5 years ago
rsdpyenugula opened this issue about 5 years ago
Memory leak in Dataframe.memory_usage
hyfjjjj opened this issue about 5 years ago
hyfjjjj opened this issue about 5 years ago
Style problem using Styler.set_table_styles
Tiarles opened this issue about 5 years ago
Tiarles opened this issue about 5 years ago
Named aggregations with multiple columns
erfannariman opened this issue about 5 years ago
erfannariman opened this issue about 5 years ago
config.register_option allows registering invalid options
simonjayhawkins opened this issue over 5 years ago
simonjayhawkins opened this issue over 5 years ago
Feature request: improve behavior of ambiguous='infer' of tz_localize()
phaabe opened this issue over 5 years ago
phaabe 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
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
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
CrystalWindSnake opened this issue over 5 years ago
Migrate 32-bit linux build
TomAugspurger opened this issue over 5 years ago
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
atlasstrategic opened this issue over 5 years ago
Picking up issue#17304 from closed PR
Alexandreae opened this pull request over 5 years ago
Alexandreae opened this pull request over 5 years ago
Upsampling time series produces noisy derivative
ytsaplin opened this issue over 5 years ago
ytsaplin opened this issue over 5 years ago