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Pull requests: pandas-dev/pandas
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PERF: fast non-unique indexing Indexing Related to indexing on series/frames, not to indexes themselves Performance Memory or execution speed performance
#15468 by horta was closed Feb 25, 2017 Loading… updated Feb 25, 2017
Make some attributes of DateOffset read-only; add tests Enhancement Performance Memory or execution speed performance
#17181 by jbrockmendel was closed Aug 30, 2017 Loading… updated Aug 30, 2017
2 of 4 tasks
offsets cleanup Clean Frequency DateOffsets Performance Memory or execution speed performance
#18174 by jbrockmendel was closed Nov 9, 2017 Loading… updated Nov 12, 2017
core.dtypes.generic --> cython Internals Related to non-user accessible pandas implementation Performance Memory or execution speed performance
#17599 by jbrockmendel was closed Oct 31, 2017 Loading… updated Dec 8, 2017
PERF: Cythonize Groupby.cummin/cummax (#15048) Groupby Performance Memory or execution speed performance
PERF: multi-column sort_values speedup Performance Memory or execution speed performance Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#17141 by mficek was closed Jan 13, 2018 Loading… updated Jan 13, 2018
3 of 4 tasks
Fix makeIntIndex, benchmark get loc Performance Memory or execution speed performance Testing pandas testing functions or related to the test suite
PERF: removed coercion to int64 for arrays of ints in Categorical.from_codes Categorical Categorical Data Type Performance Memory or execution speed performance
PERF: Speedup in printing DataFrames of long strings Output-Formatting __repr__ of pandas objects, to_string Performance Memory or execution speed performance
#21110 by david-liu-brattle-1 was closed Jun 19, 2018 Loading… updated Jun 19, 2018
Performance of get_loc on non-unique MultiIndex MultiIndex Performance Memory or execution speed performance
#19464 by toobaz was closed Nov 1, 2018 Loading… updated Nov 1, 2018
3 tasks done
PERF: speed up concat on Series by skipping unnecessary DataFrame creation Performance Memory or execution speed performance Reshaping Concat, Merge/Join, Stack/Unstack, Explode
REF: cython cleanups and optimizations Clean Internals Related to non-user accessible pandas implementation Performance Memory or execution speed performance
PERF: fix some of .clip() performance regression by using numpy arrays where possible Dtype Conversions Unexpected or buggy dtype conversions Performance Memory or execution speed performance
PERF: CategoricalIndex.get_loc should avoid expensive cast of .codes to int64 Categorical Categorical Data Type Performance Memory or execution speed performance
#21699 by topper-123 was closed Oct 19, 2018 Loading… updated Feb 2, 2019
2 of 4 tasks
PERF: Improve performance of Series.isin() on sets Performance Memory or execution speed performance Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#25812 by kykosic was closed Mar 24, 2019 Loading… updated Mar 24, 2019
4 tasks done
[PERF] Get rid of MultiIndex conversion in IntervalIndex.is_monotonic methods Interval Interval data type Performance Memory or execution speed performance
pivot_table very slow on Categorical data; how about an observed keyword argument? #24923 Categorical Categorical Data Type Performance Memory or execution speed performance
PERF: added no exception versions of '_string_to_dts' and 'parse_iso_8601_datetime' functions Datetime Datetime data dtype Performance Memory or execution speed performance
Get rid of MultiIndex conversion in IntervalIndex.is_unique Interval Interval data type Performance Memory or execution speed performance
#25159 by makbigc was closed May 14, 2019 Loading… updated May 14, 2019
PERF: DataFrame dict constructor with columns Dtype Conversions Unexpected or buggy dtype conversions Performance Memory or execution speed performance
#24387 by TomAugspurger was closed Jun 8, 2019 Loading… updated Jun 8, 2019
PERF: leverage tzlocal package to provide 2000x speedup for dateutil.tz.tzlocal operations Datetime Datetime data dtype Performance Memory or execution speed performance Timezones Timezone data dtype
#24737 by qwhelan was closed Jun 8, 2019 Loading… updated Jun 8, 2019
4 tasks
PERF: custom ops for RangeIndex.[all|any|__contains__] Index Related to the Index class or subclasses Performance Memory or execution speed performance
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