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Pull requests: pandas-dev/pandas
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BUG: unstack with object dtype of tzaware timestamps Bug Reshaping Concat, Merge/Join, Stack/Unstack, Explode Timezones Timezone data dtype
BUG: DataFrame index name no longer resets after appending a list of series Bug Reshaping Concat, Merge/Join, Stack/Unstack, Explode
BUG: DataFrame(dict_of_series) raising depending on order of dict Constructors Series/DataFrame/Index/pd.array Constructors Reshaping Concat, Merge/Join, Stack/Unstack, Explode
PERF/CLN: avoid potential copies in ravel Performance Memory or execution speed performance Reshaping Concat, Merge/Join, Stack/Unstack, Explode
BUG: nullable dtypes not preserved in Series.replace Bug Dtype Conversions Unexpected or buggy dtype conversions Reshaping Concat, Merge/Join, Stack/Unstack, Explode
Can't combine DatetimeIndex MultiIndex with numeric MultiIndex Datetime Datetime data dtype Index Related to the Index class or subclasses MultiIndex Reshaping Concat, Merge/Join, Stack/Unstack, Explode Stale
BUG: Inconsistent conversion of missing column names Reshaping Concat, Merge/Join, Stack/Unstack, Explode
PERF: any/all with axis=1 Performance Memory or execution speed performance Reshaping Concat, Merge/Join, Stack/Unstack, Explode
PERF: faster dataframe construction from recarray Performance Memory or execution speed performance Reshaping Concat, Merge/Join, Stack/Unstack, Explode
PERF: unstack Performance Memory or execution speed performance Reshaping Concat, Merge/Join, Stack/Unstack, Explode
ENH: allow attrs to be propagated via pd.concat metadata _metadata, .attrs Reshaping Concat, Merge/Join, Stack/Unstack, Explode
DOC: Improve code example for DataFrame.join Docs Reshaping Concat, Merge/Join, Stack/Unstack, Explode
BUG: metadata propagation in .loc, .iloc and Series.to_frame() Reshaping Concat, Merge/Join, Stack/Unstack, Explode
BUG: join MultiIndex with overlapping IntervalIndex level (#44096) Interval Interval data type MultiIndex Reshaping Concat, Merge/Join, Stack/Unstack, Explode
BUG: DataFrame.shift with axis=1 and mismatched fill_value Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Reshaping Concat, Merge/Join, Stack/Unstack, Explode
BUG: Series/Index arithmetic result names with NAs Bug NA - MaskedArrays Related to pd.NA and nullable extension arrays Numeric Operations Arithmetic, Comparison, and Logical operations Reshaping Concat, Merge/Join, Stack/Unstack, Explode
BUG: DataFrame.astype(series) with duplicate columns Bug Dtype Conversions Unexpected or buggy dtype conversions Reshaping Concat, Merge/Join, Stack/Unstack, Explode
BUG: sort_index did not respect ignore_index when not sorting Bug Index Related to the Index class or subclasses Reshaping Concat, Merge/Join, Stack/Unstack, Explode
BUG: Merge with str/StringDtype keys and multiindex Dtype Conversions Unexpected or buggy dtype conversions Reshaping Concat, Merge/Join, Stack/Unstack, Explode
PERF: get_dummies create array of 0/1s with appropriate layout for internals Internals Related to non-user accessible pandas implementation Performance Memory or execution speed performance Reshaping Concat, Merge/Join, Stack/Unstack, Explode
BUG: NumericIndex.append retain dtype Index Related to the Index class or subclasses Reshaping Concat, Merge/Join, Stack/Unstack, Explode
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