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Issues: pandas-dev/pandas

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Issues list

BUG: Constructing series with Timedelta object results in datetime series Bug ConstructorsSeries/DataFrame/Index/pd.array Constructors TimedeltaTimedelta data type
#61365 openedApr 27, 2025 byCasper-Guo
3 tasks done
BUG: Memory leak when creating a df inside a loop Bug Closing CandidateMay be closeable, needs more eyeballs ConstructorsSeries/DataFrame/Index/pd.array Constructors PerformanceMemory or execution speed performance WindowsWindows OS
#60897 openedFeb 9, 2025 byChuck321123
3 tasks done
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
BUG: Creation of UInt64 column with18446744073709551615 throws RuntimeWarning Bug ConstructorsSeries/DataFrame/Index/pd.array Constructors ExtensionArrayExtending pandas with custom dtypes or arrays.
#60050 openedOct 15, 2024 byTishj
2 of 3 tasks
BUG: Boolean Series (actually object) with <NA> values breaks ~ negation and reverts to bit-wise operations Bug Closing CandidateMay be closeable, needs more eyeballs ConstructorsSeries/DataFrame/Index/pd.array Constructors NA - MaskedArraysRelated to pd.NA and nullable extension arrays
#60049 openedOct 15, 2024 byRedAero
3 tasks done
ENH: DataFrame.from_dict doesn't work with collections.UserDict objects ConstructorsSeries/DataFrame/Index/pd.array Constructors Enhancement IO DataIO issues that don't fit into a more specific label Needs DiscussionRequires discussion from core team before further action
#59737 openedSep 6, 2024 bymesvam
2 of 3 tasks
BUG: Can't storeIntEnum members inside apd.DataFrame column ofobject dtype. If you usepd.Series it works Bug ConstructorsSeries/DataFrame/Index/pd.array Constructors Dtype ConversionsUnexpected or buggy dtype conversions
#59380 openedAug 1, 2024 bywillofferfit
2 of 3 tasks
ENH: generalize__init__ on adict toabc.collections.Mapping and__getitem__ on alist toabc.collections.Sequence API Design ConstructorsSeries/DataFrame/Index/pd.array Constructors Enhancement Needs DiscussionRequires discussion from core team before further action
#58803 openedMay 21, 2024 byMilesCranmer
1 of 3 tasks
BUG: DataFrame([Series with different CategoricalIndexes]) results in non-Categorical columns CategoricalCategorical Data Type ConstructorsSeries/DataFrame/Index/pd.array Constructors DataFrameDataFrame data structure
#57592 openedFeb 23, 2024 bymroeschke
PERF: timezoned series created 6x faster than non-timezoned series ConstructorsSeries/DataFrame/Index/pd.array Constructors PerformanceMemory or execution speed performance Timestamppd.Timestamp and associated methods TimezonesTimezone data dtype
#56860 openedJan 13, 2024 bysoerenwolfers
2 of 3 tasks
BUG: Empty list passed toSeries returnsobject dtype, but viaDataFrame returnsfloat64 Bug ConstructorsSeries/DataFrame/Index/pd.array Constructors DataFrameDataFrame data structure Dtype ConversionsUnexpected or buggy dtype conversions
#56679 openedDec 29, 2023 bygalipremsagar
2 of 3 tasks
BUG: Inconsistent behavior while constructing a Series with large integers in a int64 masked array Bug ConstructorsSeries/DataFrame/Index/pd.array Constructors Dtype ConversionsUnexpected or buggy dtype conversions NA - MaskedArraysRelated to pd.NA and nullable extension arrays
#56566 openedDec 19, 2023 byMridulS
3 tasks done
4
3
REF/EA-API: EA constructor without dtype specified API Design ConstructorsSeries/DataFrame/Index/pd.array Constructors ExtensionArrayExtending pandas with custom dtypes or arrays.
#56430 openedDec 10, 2023 byjbrockmendel
BUG: DataFrame([empty EA Series]) returns NAs with dtype object Bug ConstructorsSeries/DataFrame/Index/pd.array Constructors DataFrameDataFrame data structure NA - MaskedArraysRelated to pd.NA and nullable extension arrays
#56231 openedNov 28, 2023 bymroeschke
3 tasks done
API/PERF: when to check for mismatched tzs/awareness in array_to_datetime API Design ConstructorsSeries/DataFrame/Index/pd.array Constructors DatetimeDatetime data dtype PerformanceMemory or execution speed performance
#55779 openedOct 31, 2023 byjbrockmendel
API: to_datetime with integers/floats and format desired behavior? API Design ConstructorsSeries/DataFrame/Index/pd.array Constructors DatetimeDatetime data dtype
#55663 openedOct 24, 2023 byjbrockmendel
BUG: Data type is float64 when Dataframe is initialized with array of shape (0, 0) Bug ConstructorsSeries/DataFrame/Index/pd.array Constructors DataFrameDataFrame data structure Dtype ConversionsUnexpected or buggy dtype conversions
#55649 openedOct 23, 2023 byGianlucaFicarelli
2 of 3 tasks
QST: pandas.DataFrame() converts pyarrow.array() to numpy series Arrowpyarrow functionality Bug ConstructorsSeries/DataFrame/Index/pd.array Constructors Dtype ConversionsUnexpected or buggy dtype conversions
#54057 openedJul 9, 2023 byyoonghm
2 tasks done
API/DEPR: pd.array don't cast numpy int/float/bool arrays to nullable API Design ConstructorsSeries/DataFrame/Index/pd.array Constructors DeprecateFunctionality to remove in pandas NA - MaskedArraysRelated to pd.NA and nullable extension arrays Needs DiscussionRequires discussion from core team before further action PDEP missing valuesIssues that would be addressed by the Ice Cream Agreement from the Aug 2023 sprint
#53695 openedJun 15, 2023 byjbrockmendel
BUG: (regression? v2 vs v1.5) ValueError: Big-endian buffer not supported on little-endian compiler ConstructorsSeries/DataFrame/Index/pd.array Constructors RegressionFunctionality that used to work in a prior pandas version
#53234 openedMay 15, 2023 byst-bender
3 tasks done
 2.2.3
API: construction from custom object with __array__ method API - ConsistencyInternal Consistency of API/Behavior ConstructorsSeries/DataFrame/Index/pd.array Constructors
#53085 openedMay 4, 2023 byjbrockmendel
ENH: switch to copy=False by default when DataFrame is constructed from dict of Series/Index for CoW ConstructorsSeries/DataFrame/Index/pd.array Constructors Copy / view semantics Enhancement Needs DiscussionRequires discussion from core team before further action
#52967 openedApr 27, 2023 byphofl
1 of 3 tasks
 3.0
BUG: Rows are not inserted into DataFrame from lists of one element in v2.0 Bug ConstructorsSeries/DataFrame/Index/pd.array Constructors DataFrameDataFrame data structure RegressionFunctionality that used to work in a prior pandas version
#52825 openedApr 21, 2023 byn-splv
3 tasks done
BUG: fixed-length string arrays are not recognised as bytes on instantiation Bug Compatpandas objects compatability with Numpy or Python functions ConstructorsSeries/DataFrame/Index/pd.array Constructors DataFrameDataFrame data structure
#51994 openedMar 15, 2023 bygszep
3 tasks done
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