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Issues: pandas-dev/pandas
FEEDBACK: PyArrow as a required dependency and PyArrow backed...
#54466
opened Aug 9, 2023 by
phofl
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154
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ENH: adding a filter (and bold) to header when writing to excel
Enhancement
IO Excel
read_excel, to_excel
#61194
opened Mar 28, 2025 by
simonaubertbd
1 of 3 tasks
BUG: Boolean selection edge case.
Bug
Indexing
Related to indexing on series/frames, not to indexes themselves
Needs Discussion
Requires discussion from core team before further action
#61191
opened Mar 27, 2025 by
ptth222
2 of 3 tasks
BUG: date comparison fails when series is all pd.NaT values
Bug
Datetime
Datetime data dtype
good first issue
#61188
opened Mar 27, 2025 by
imrehg
3 tasks done
BUG: DataFrame.min raises TypeError when column contains mixed types (e.g., np.nan and datetime)
Bug
Missing-data
np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
Needs Info
Clarification about behavior needed to assess issue
Reduction Operations
sum, mean, min, max, etc.
#61187
opened Mar 27, 2025 by
tanjt107
3 tasks done
BUG: engine calamine lost 0 when read_excel from vlookup cell
Bug
IO Excel
read_excel, to_excel
Needs Info
Clarification about behavior needed to assess issue
#61186
opened Mar 27, 2025 by
ryjfgjl
2 of 3 tasks
BUG: Negation of np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
Needs Discussion
Requires discussion from core team before further action
Strings
String extension data type and string data
.str.isnumeric()
changes dtype
when pd.NA
is present
Bug
Missing-data
#61182
opened Mar 26, 2025 by
noahblakesmith
3 tasks done
BUG: Performance issue with fillna() after merging DataFrames
Missing-data
np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
Needs Info
Clarification about behavior needed to assess issue
Performance
Memory or execution speed performance
#61180
opened Mar 26, 2025 by
sjfakharian
2 of 3 tasks
BUG: Inconsistency when converting week PeriodIndex into DatetimeIndex with astype("datetime64[ns]")
Bug
Needs Triage
Issue that has not been reviewed by a pandas team member
#61177
opened Mar 25, 2025 by
dbalabka
3 tasks done
BUG: AttributeError on method call after binary operation in eval expression
Bug
expressions
pd.eval, query
#61175
opened Mar 25, 2025 by
stewit
2 of 3 tasks
BUG: pd.read_csv() on empty files should give an empty dataframe pd.DataFrame()
Bug
Closing Candidate
May be closeable, needs more eyeballs
IO CSV
read_csv, to_csv
#61172
opened Mar 24, 2025 by
xuancong84
3 tasks done
ENH: Enable nsmallest/nlargest on object dtype
Enhancement
Filters
e.g. head, tail, nth
Sorting
e.g. sort_index, sort_values
#61166
opened Mar 22, 2025 by
Gri72
ENH: merge_asof threshold minimum
Enhancement
Needs Discussion
Requires discussion from core team before further action
Needs Info
Clarification about behavior needed to assess issue
Reshaping
Concat, Merge/Join, Stack/Unstack, Explode
#61164
opened Mar 21, 2025 by
Lituchy
1 of 3 tasks
BUG: fails to plot 2 plots with secondary y axis when index type is PeriodIndex and plot kinds are different
Bug
Visualization
plotting
#61161
opened Mar 21, 2025 by
Ev2geny
2 of 3 tasks
ENH: Accept no fields for groupby by
Enhancement
Groupby
Needs Discussion
Requires discussion from core team before further action
#61160
opened Mar 21, 2025 by
simonaubertbd
1 of 3 tasks
BUILD: Cython.Compiler.Errors: 'free_threading_config.pxi' not found
Build
Library building on various platforms
#61156
opened Mar 20, 2025 by
yohplala
1 task done
BUG: Impossible creation of array with dtype=string
Bug
Strings
String extension data type and string data
#61155
opened Mar 20, 2025 by
Maxence1402
2 of 3 tasks
BUG: Inconsistent index type when using read_csv with string[pyarrow] dtype
API - Consistency
Internal Consistency of API/Behavior
Bug
IO CSV
read_csv, to_csv
Needs Discussion
Requires discussion from core team before further action
#61145
opened Mar 19, 2025 by
ptth222
2 of 3 tasks
BUG(?): rolling sum with pyarrow types results in float64 instead of preserving integer type
Arrow
pyarrow functionality
Bug
Dtype Conversions
Unexpected or buggy dtype conversions
Window
rolling, ewma, expanding
#61144
opened Mar 18, 2025 by
MarcoGorelli
3 tasks done
Improve the apply/map APIs
Apply
Apply, Aggregate, Transform, Map
#61128
opened Mar 15, 2025 by
datapythonista
DOC: Write user guide page on apply/map/transform methods
Apply
Apply, Aggregate, Transform, Map
Docs
#61126
opened Mar 15, 2025 by
datapythonista
ENH: Supporting third-party engines for all Apply, Aggregate, Transform, Map
map
and apply
methods
Apply
#61125
opened Mar 15, 2025 by
datapythonista
ENH: fillna enhancement with method='nearest'
Enhancement
Missing-data
np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
Needs Info
Clarification about behavior needed to assess issue
#61124
opened Mar 15, 2025 by
mennowitteveen
1 of 3 tasks
BUG: np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
Reshaping
Concat, Merge/Join, Stack/Unstack, Explode
pivot_table
drops rows and columns despite values being non-NaN
Docs
Missing-data
#61113
opened Mar 12, 2025 by
it176131
3 tasks done
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