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Issues: pandas-dev/pandas

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1,828 Open 10,309 Closed
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Issues list

BUG: DataFrame constructor not compatible with array-like classes that have a 'name' attribute Bug Constructors Series/DataFrame/Index/pd.array Constructors
#61443 opened May 14, 2025 by user27182
2 of 3 tasks
1
5
BUG: Confusing Behavior When Assigning DataFrame Columns Using omegaconf.ListConfig Bug Indexing Related to indexing on series/frames, not to indexes themselves Needs Discussion Requires discussion from core team before further action
#61439 opened May 14, 2025 by Trezorro
2 of 3 tasks
2
BUG: Joining Pandas with Polars dataframe produces fuzzy errormessage Bug Error Reporting Incorrect or improved errors from pandas
#61434 opened May 12, 2025 by Juan-132
3 tasks done
6
BUG: Some ExtensionArrays can return 0-d Elements Bug Needs Triage Issue that has not been reviewed by a pandas team member
#61433 opened May 12, 2025 by ilan-gold
2 of 3 tasks
3
BUG: documented usage of of str.split(...).str.get fails on dtype large_string[pyarrow] Bug Needs Triage Issue that has not been reviewed by a pandas team member
#61431 opened May 12, 2025 by SandroCasagrande
3 tasks done
BUG(string dtype): Arithmetic operations between Series with string dtype index API - Consistency Internal Consistency of API/Behavior Bug Needs Discussion Requires discussion from core team before further action Strings String extension data type and string data
#61425 opened May 10, 2025 by rhshadrach
@samruddhibaviskar11
2
BUG/FEATURE REQUEST: DataFrame.to_sql() tries to create table when it exists Bug IO SQL to_sql, read_sql, read_sql_query Needs Discussion Requires discussion from core team before further action Needs Info Clarification about behavior needed to assess issue
#61418 opened May 9, 2025 by vladidobro
2 of 3 tasks
3
BUG: df.rolling.{std, skew, kurt} gives unexpected value Bug Window rolling, ewma, expanding
#61416 opened May 9, 2025 by Jie-Lei
3 tasks done
@eicchen
8
BUG: to_csv() quotechar/escapechar behavior differs from csv module Bug IO CSV read_csv, to_csv
#61407 opened May 8, 2025 by johnrtian
2 of 3 tasks
@omarraf
2
BUG: way to include all columns within a groupby apply Apply Apply, Aggregate, Transform, Map Bug Closing Candidate May be closeable, needs more eyeballs Groupby
#61406 opened May 8, 2025 by madelavar12
3 tasks done
4
BUG: Duplicate columns allowed on merge if originating from separate dataframes Bug Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#61402 opened May 7, 2025 by nikaltipar
3 tasks done
1
@Farsidetfs @samruddhibaviskar11
8
BUG: to_sql works only for strings Bug IO SQL to_sql, read_sql, read_sql_query Needs Info Clarification about behavior needed to assess issue
#61385 opened May 1, 2025 by pranav-ds
2 of 3 tasks
4
BUG: Multindex difference not working on columns with type Timestamp[ns][pyarrow] Arrow pyarrow functionality Bug Numeric Operations Arithmetic, Comparison, and Logical operations
#61382 opened Apr 30, 2025 by bmaisonn
2 of 3 tasks
3
2
BUG: Python 3.14 may not increment refcount Bug Copy / view semantics Needs Discussion Requires discussion from core team before further action Warnings Warnings that appear or should be added to pandas
#61368 opened Apr 28, 2025 by tacaswell
3 tasks done
4
BUG: Constructing series with Timedelta object results in datetime series Bug Constructors Series/DataFrame/Index/pd.array Constructors Timedelta Timedelta data type
#61365 opened Apr 27, 2025 by Casper-Guo
3 tasks done
3
BUG: inserting list of strings into Series auto-infers them as datetimes with mixed formats Bug Datetime Datetime data dtype
#61353 opened Apr 25, 2025 by MarcoGorelli
3 tasks done
BUG: DataFrame.to_markdown exception when a cell has numpy.array type Bug Dependencies Required and optional dependencies IO Data IO issues that don't fit into a more specific label Needs Discussion Requires discussion from core team before further action Nested Data Data where the values are collections (lists, sets, dicts, objects, etc.).
#61337 opened Apr 22, 2025 by omarsaad98
3 tasks done
@sajmaru
6
BUG: to_dict(orient='dict') does not convert np.nan to None in Pandas 2.2.3 Bug IO Data IO issues that don't fit into a more specific label Needs Info Clarification about behavior needed to assess issue
#61323 opened Apr 21, 2025 by uyauhkk01
1 of 3 tasks
1
BUG: memory issues with string[pyarrow] after sorted pd.merge Arrow pyarrow functionality Bug Closing Candidate May be closeable, needs more eyeballs Upstream issue Issue related to pandas dependency
#61322 opened Apr 20, 2025 by noahblakesmith
3 tasks done
@arjuanwall @phiofuni
@bingbhakdibhumi @eenkhbol
5
BUG: .to_parquet fails with schema for string[pyarrow] but not string[python] Arrow pyarrow functionality Bug Closing Candidate May be closeable, needs more eyeballs Upstream issue Issue related to pandas dependency
#61316 opened Apr 20, 2025 by noahblakesmith
3 tasks done
1
BUG: 'ArrowExtensionArray' object has no attribute 'max' when passing pyarrow-backed series to .iloc Arrow pyarrow functionality Bug Indexing Related to indexing on series/frames, not to indexes themselves
#61311 opened Apr 19, 2025 by MarcoGorelli
3 tasks done
1
BUG: NA are coerced in to NaN by concat Bug Dtype Conversions Unexpected or buggy dtype conversions Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate PDEP missing values Issues that would be addressed by the Ice Cream Agreement from the Aug 2023 sprint Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#61303 opened Apr 17, 2025 by davetapley
3 tasks done
4
BUG: join unexpectedly created extra column start with "key_" Bug Deprecate Functionality to remove in pandas Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#61294 opened Apr 15, 2025 by albb318
3 tasks done
@ShayanG9
7
BUG: reindex (and atleast several other methods) do not respect fill_value=None Bug Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Needs Discussion Requires discussion from core team before further action PDEP missing values Issues that would be addressed by the Ice Cream Agreement from the Aug 2023 sprint
#61291 opened Apr 15, 2025 by TimAllen576
3 tasks done
1
BUG: remove_unused_levels does not keep index levels order Bug MultiIndex Needs Discussion Requires discussion from core team before further action Sorting e.g. sort_index, sort_values
#61245 opened Apr 7, 2025 by mathman79
3 tasks done
2
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