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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
Cython-optimized expanding apply transformations
bschreck opened this issue almost 9 years ago
bschreck opened this issue almost 9 years ago
ENH: Make use of RangeIndex in DatetimeIndex
kawochen opened this issue almost 9 years ago
kawochen opened this issue almost 9 years ago
use_inf_as_null makes fillna extremely slow
Winand opened this issue almost 9 years ago
Winand opened this issue almost 9 years ago
Assignment to mixed-type DataFrame with float32 coerce to float64
fnielsen opened this issue almost 9 years ago
fnielsen opened this issue almost 9 years ago
BUG: fillna('') does not replace NaT
jreback opened this issue about 9 years ago
jreback opened this issue about 9 years ago
BUG/API: Clarify the behaviour of fillna downcasting
sinhrks opened this issue about 9 years ago
sinhrks opened this issue about 9 years ago
df.plot(ax=ax) AttributeError: 'Axes' object has no attribute 'is_first_col'
dragoljub opened this issue about 9 years ago
dragoljub opened this issue about 9 years ago
PERF: refactor ExcelFormatter
chris-b1 opened this issue over 9 years ago
chris-b1 opened this issue over 9 years ago
groupby.nth with dropna is buggy
behzadnouri opened this issue over 9 years ago
behzadnouri opened this issue over 9 years ago
read_sql should accept a sql_params parameter
scls19fr opened this issue over 9 years ago
scls19fr opened this issue over 9 years ago
TST/API: Simplify testing functions API
sinhrks opened this issue over 9 years ago
sinhrks opened this issue over 9 years ago
BUG: crosstab(dropna=False) does not work like value_counts(dropna=False)
rosnfeld opened this issue over 9 years ago
rosnfeld opened this issue over 9 years ago
Add inplace option to DataFrame.update()
dov opened this issue over 9 years ago
dov opened this issue over 9 years ago
BUG: GroupBy.idxmax breaks when grouping by Categorical with unused categories
jorisvandenbossche opened this issue over 9 years ago
jorisvandenbossche opened this issue over 9 years ago
Expose the blocks API and disable automatic consolidation
shoyer opened this issue over 9 years ago
shoyer opened this issue over 9 years ago
High memory usage pivot_table
cangermueller opened this issue over 9 years ago
cangermueller opened this issue over 9 years ago
BUG: partial nan levels missing when grouping
jreback opened this issue over 9 years ago
jreback opened this issue over 9 years ago
DOC: splitting the IO docs into separate pages
jorisvandenbossche opened this issue over 9 years ago
jorisvandenbossche opened this issue over 9 years ago
Add to_fwf support
cancan101 opened this issue over 9 years ago
cancan101 opened this issue over 9 years ago
New feature/enhancement request: Merge dataframes where one value is between two others
stoffprof opened this issue over 9 years ago
stoffprof opened this issue over 9 years ago
Poor read_csv performance on file with many columns
tloredo opened this issue almost 10 years ago
tloredo opened this issue almost 10 years ago
Status of io.sql.get_schema as public function?
jorisvandenbossche opened this issue almost 10 years ago
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
kundapur opened this issue almost 10 years ago
kundapur opened this issue almost 10 years ago
Grouped plot legend does not create legend entry for first group
michaelaye opened this issue almost 10 years ago
michaelaye opened this issue almost 10 years ago
False negative on SettingWithCopyWarning
adamklein opened this issue almost 10 years ago
adamklein opened this issue almost 10 years ago
pandas.DataFrame.plot(): Labels do not appear in legend
JohnNapier opened this issue almost 10 years ago
JohnNapier opened this issue almost 10 years ago
BUG: DataFrame.unstack() does not properly sort list of levels
seth-p opened this issue almost 10 years ago
seth-p opened this issue almost 10 years ago
Support pad/backfill/nearest reindexing even for unsorted indexes by storing a sorted index?
shoyer opened this issue almost 10 years ago
shoyer opened this issue almost 10 years ago
BUG: DataFrame Apply unexpectedly casts types (uint64)
bdmcfar opened this issue almost 10 years ago
bdmcfar opened this issue almost 10 years ago
API: consistent float_format specification
jorisvandenbossche opened this issue almost 10 years ago
jorisvandenbossche opened this issue almost 10 years ago
Use KDTrees to support nearest neighbor queries/joins on MultiIndexes?
shoyer opened this issue almost 10 years ago
shoyer opened this issue almost 10 years ago
ENH: implement clip for sparse structures
wholmgren opened this issue about 10 years ago
wholmgren opened this issue about 10 years ago
Constructing DataFrame from dict
bmu opened this issue about 10 years ago
bmu opened this issue about 10 years ago
np.float16 support
datapythonista opened this issue about 10 years ago
datapythonista opened this issue about 10 years ago
drop_duplicates() on a float64 type column containing NaN values will cause CPU 100% occupied forever
scratdata opened this issue about 10 years ago
scratdata opened this issue about 10 years ago
COMPAT: Floating point fractional hours for timedeltas gives unexpected precision issue
ahjulstad opened this issue about 10 years ago
ahjulstad opened this issue about 10 years ago
Use multi-row inserts for massive speedups on to_sql over high latency connections
maxgrenderjones opened this issue about 10 years ago
maxgrenderjones opened this issue about 10 years ago
ENH: other join types than 'left' for .update
maxgrenderjones opened this issue about 10 years ago
maxgrenderjones opened this issue about 10 years ago
bug in tz_localize when summer/winter time change
gbakalian opened this issue over 10 years ago
gbakalian opened this issue over 10 years ago
Klib upgrade (factorizing performance increase)
CarstVaartjes opened this issue over 10 years ago
CarstVaartjes opened this issue over 10 years ago
BUG: columns misaligned in repr when having >10 columns with integer index
jorisvandenbossche opened this issue over 10 years ago
jorisvandenbossche opened this issue over 10 years ago
ENH: read_csv to have a parse_timedelta kw to automatically parse into timedelta64
jreback opened this issue over 10 years ago
jreback opened this issue over 10 years ago
Allowing the index to be referenced by name, like a column
makmanalp opened this issue over 10 years ago
makmanalp opened this issue over 10 years ago
BUG: coercion of non-M8[ns] in datetime ops
jreback opened this issue over 10 years ago
jreback opened this issue over 10 years ago
API: disallow inplace setting with where and a non-np.nan value (GH7656)
jreback opened this pull request over 10 years ago
jreback opened this pull request over 10 years ago
BUG: option date_dayfirst does not function as expected
clham opened this issue over 10 years ago
clham opened this issue over 10 years ago
API: way to exclude the grouped column with apply
jreback opened this issue over 10 years ago
jreback opened this issue over 10 years ago
DOC: freeze old whatsnew notes?
jorisvandenbossche opened this issue almost 11 years ago
jorisvandenbossche opened this issue almost 11 years ago
PERF: Cython or C implementation for reading fixed-width files (read_fwf)
stevenmanton opened this issue almost 11 years ago
stevenmanton opened this issue almost 11 years ago
Allow multibyte separator / delimiter in read_csv() & read_table()
dlcmh opened this issue almost 11 years ago
dlcmh opened this issue almost 11 years ago
BUG df with 'index' as one name of a MultiIndex fails to save as HDFStore table
glyg opened this issue almost 11 years ago
glyg opened this issue almost 11 years ago
API: allow read_pickle to read from strings (and not just files)
jreback opened this issue about 11 years ago
jreback opened this issue about 11 years ago
set_columns() equivalent of set_index() ?
tyarkoni opened this issue about 11 years ago
tyarkoni opened this issue about 11 years ago
ENH: Add decimal parameter to to_numeric
cancan101 opened this issue over 11 years ago
cancan101 opened this issue over 11 years ago
custom formatters for to_csv
cpcloud opened this issue over 11 years ago
cpcloud opened this issue over 11 years ago
Give the merge copy parameter better documentation
cpcloud opened this issue over 11 years ago
cpcloud opened this issue over 11 years ago
column-wise fillna with Series/dict NotImplemented
hayd opened this issue over 11 years ago
hayd opened this issue over 11 years ago
ER: compound dtypes - DataFrame constructor/astype
mamikonyan opened this issue over 11 years ago
mamikonyan opened this issue over 11 years ago
BUG: update should try harder to preserve dtypes
jreback opened this issue over 11 years ago
jreback opened this issue over 11 years ago
cython not found when building from source
gliptak opened this issue over 11 years ago
gliptak opened this issue over 11 years ago
fillna() does not work when value parameter is a list
ijmcf opened this issue almost 12 years ago
ijmcf opened this issue almost 12 years ago