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Issues: pandas-dev/pandas

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Issues list

BUG: Raise clear error for duplicate id_vars in melt (GH61475) Error ReportingIncorrect or improved errors from pandas ReshapingConcat, Merge/Join, Stack/Unstack, Explode
#61484 openedMay 23, 2025 byZanirPLoading…
4 of 5 tasks
BUG: More Indicative Error when pd.melt with duplicate columns Bug Error ReportingIncorrect or improved errors from pandas good first issue ReshapingConcat, Merge/Join, Stack/Unstack, Explode
#61475 openedMay 21, 2025 byJames-Lee-998
3 tasks done
BUG: Raise TypeError when joining with non-DataFrame using 'on=' (GH#61434) Error ReportingIncorrect or improved errors from pandas ReshapingConcat, Merge/Join, Stack/Unstack, Explode
#61454 openedMay 18, 2025 byiabhi4Loading…
4 tasks done
BUG: Joining Pandas with Polars dataframe produces fuzzy errormessage Bug Error ReportingIncorrect or improved errors from pandas
#61434 openedMay 12, 2025 byJuan-132
3 tasks done
BUG: Raise ValueError for non-string columns in read_json orient='table' (GH19129) Error ReportingIncorrect or improved errors from pandas IO JSONread_json, to_json, json_normalize
#61359 openedApr 26, 2025 byamoitra1Loading…
DOC: Pivot() example call incorrectly used and would give "error: duplicate index" Error ReportingIncorrect or improved errors from pandas Needs InfoClarification about behavior needed to assess issue ReshapingConcat, Merge/Join, Stack/Unstack, Explode
#61058 openedMar 5, 2025 bymheskett
1 task done
BUG:Index.drop_duplicates() is inconsistent for unhashable values Bug Error ReportingIncorrect or improved errors from pandas
#60925 openedFeb 13, 2025 bycamriddell
2 of 3 tasks
BUG: scalar out of bounds input does not raise for to_datetime Bug datetime.datestdlib datetime.date support Error ReportingIncorrect or improved errors from pandas
#60677 openedJan 8, 2025 bykmuehlbauer
2 of 3 tasks
BUG: Arrow Struct columns cannot be grouped on (ArrowNotImplementedError) Arrowpyarrow functionality Bug Error ReportingIncorrect or improved errors from pandas Groupby
#60594 openedDec 20, 2024 bya-reich
2 of 3 tasks
ERR: consistent error messages for unsupported setitem values API - ConsistencyInternal Consistency of API/Behavior Error ReportingIncorrect or improved errors from pandas IndexingRelated to indexing on series/frames, not to indexes themselves
#60218 openedNov 6, 2024 byjorisvandenbossche
BUG: many dataframe operations broken when a column contains numpy structured array Bug ConstructorsSeries/DataFrame/Index/pd.array Constructors Error ReportingIncorrect or improved errors from pandas
#60108 openedOct 26, 2024 bydigitalsignalperson
2 of 3 tasks
ERR: consistent error messages for unsupported reduction operations API - ConsistencyInternal Consistency of API/Behavior Error ReportingIncorrect or improved errors from pandas Reduction Operationssum, mean, min, max, etc.
#59580 openedAug 22, 2024 byjorisvandenbossche
BUG: provide better error message for pd.Timedelta - pd.Series[Timestamp] DatetimeDatetime data dtype Error ReportingIncorrect or improved errors from pandas
#59571 openedAug 21, 2024 bysfc-gh-mvashishtha
2 of 3 tasks
BUG: Error message in read_csv misleading when using decimal="," Bug Error ReportingIncorrect or improved errors from pandas IO CSVread_csv, to_csv
#59299 openedJul 23, 2024 bybehrenhoff
2 of 3 tasks
BUG: reindex with level specified does not expand data Bug Docs Error ReportingIncorrect or improved errors from pandas
#59170 openedJul 2, 2024 byseanv507
2 of 3 tasks
BUG: ht.PyObjectHashTable swallows exception Bug Error ReportingIncorrect or improved errors from pandas hashinghash_pandas_object
#57052 openedJan 24, 2024 byFreekPaans
3 tasks done
API: IncompatibleFrequency should subclass TypeError API Design Error ReportingIncorrect or improved errors from pandas
#55782 openedOct 31, 2023 byjbrockmendel
3 tasks done
 3.0
BUG: Pandas 2.0 loses type information fromdatetime64[M/D] when creating dataframes Bug Dtype ConversionsUnexpected or buggy dtype conversions Error ReportingIncorrect or improved errors from pandas Non-Nanodatetime64/timedelta64 with non-nanosecond resolution
#55301 openedSep 26, 2023 byKianShepherd
3 tasks done
BUG: TypeError when printing dataframe with numpy.record Bug Error ReportingIncorrect or improved errors from pandas
#55011 openedSep 5, 2023 byrvernica
3 tasks done
BUG: pandas coercesnp.longlong tonp.int64 Bug Error ReportingIncorrect or improved errors from pandas
#54252 openedJul 25, 2023 byrandolf-scholz
2 of 3 tasks
BUG: "table name" form ofpd.read_sql() doesn't work for SQLite databases Error ReportingIncorrect or improved errors from pandas IO SQLto_sql, read_sql, read_sql_query
#54233 openedJul 23, 2023 bykalekundert
2 of 3 tasks
BUG: pd.Series.describe ignores include, exclude arguments AlgosNon-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Error ReportingIncorrect or improved errors from pandas
#54193 openedJul 19, 2023 bynatalymr
3 tasks done
BUG: MultiIndex label lookup with empty list indexers inconsistent wrt placement of indexer Bug Error ReportingIncorrect or improved errors from pandas IndexingRelated to indexing on series/frames, not to indexes themselves MultiIndex
#54009 openedJul 5, 2023 bywence-
3 tasks done
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