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Pull requests: pandas-dev/pandas
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PERF: cythonizing _concat_date_cols; conversion to float without exceptions in _does_string_look_like_datetime Datetime Datetime data dtype Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate Performance Memory or execution speed performance
REF/DEPR: DatetimeIndex constructor Datetime Datetime data dtype Deprecate Functionality to remove in pandas
implement+test mean for datetimelike EA/Index/Series Algos Non-arithmetic algos: value_counts, factorize, sorting, isin, clip, shift, diff Datetime Datetime data dtype ExtensionArray Extending pandas with custom dtypes or arrays. Testing pandas testing functions or related to the test suite
PERF: Parse certain dates in Cython instead of falling back to dateutil.parse Datetime Datetime data dtype Performance Memory or execution speed performance
BUG/REF: TimedeltaIndex.__new__ Bug Datetime Datetime data dtype Refactor Internal refactoring of code Timedelta Timedelta data type
Allow indices to be mapped through through dictionaries or series API Design Clean Datetime Datetime data dtype Indexing Related to indexing on series/frames, not to indexes themselves Reshaping Concat, Merge/Join, Stack/Unstack, Explode
ENH: Return locale based month_name and weekday_name values (#12805, #12806) Compat pandas objects compatability with Numpy or Python functions Datetime Datetime data dtype Enhancement
ENH: Support multiple opening hours intervals for BusinessHour Datetime Datetime data dtype Enhancement
Rolling window endpoints inclusion API Design Datetime Datetime data dtype Reshaping Concat, Merge/Join, Stack/Unstack, Explode
BUG: Fix Timestamp type checks to work with subclassed datetime (#25851) Datetime Datetime data dtype Internals Related to non-user accessible pandas implementation
REF/TST: Fix remaining DatetimeArray with DateOffset arithmetic ops Datetime Datetime data dtype Frequency DateOffsets
PERF: changed default value of cache parameter to True in to_datetime function API Design Datetime Datetime data dtype Performance Memory or execution speed performance
BUG: Series.asof fails for all NaN Series (GH15713) Bug Datetime Datetime data dtype Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
DEPR: __array__ for tz-aware Series/Index Datetime Datetime data dtype Deprecate Functionality to remove in pandas Timezones Timezone data dtype
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