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Pull requests: pandas-dev/pandas
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REF: do all casting _before_ call to DatetimeEngine.get_loc Datetime Datetime data dtype Indexing Related to indexing on series/frames, not to indexes themselves 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…
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…
2 of 4 tasks
REF: dont use numexpr in places where it doesnt help. Performance Memory or execution speed performance Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#31984 by jbrockmendel was closed Feb 17, 2020 Loading…
PERF: significantly improve performance of MultiIndex.shape MultiIndex Performance Memory or execution speed performance
Series.map Performance Improvement When Using Dictionaries Apply Apply, Aggregate, Transform, Map Performance Memory or execution speed performance Stale
#46348 by ryansdowning was closed May 7, 2022 Loading…
1 of 4 tasks
Performance regression in stat_ops.FrameMultiIndexOps.time_op Performance Memory or execution speed performance
CLN: dont consolidate in indexing Clean Indexing Related to indexing on series/frames, not to indexes themselves Performance Memory or execution speed performance
ENH: Clear index cache after reindex Performance Memory or execution speed performance
#33536 by BaiBaiHi was closed May 22, 2020 Loading…
PERF: Using Numpy C-API for left-join calls Performance Memory or execution speed performance
#32814 by ShaharNaveh was closed Mar 19, 2020 Loading…
2 of 5 tasks
offsets cleanup Clean Frequency DateOffsets Performance Memory or execution speed performance
#18174 by jbrockmendel was closed Nov 9, 2017 Loading…
PERF: Allow str.split callers to skip expensive post-processing Performance Memory or execution speed performance Stale Strings String extension data type and string data
#35223 by wbadart was closed Sep 30, 2020 Loading…
3 of 4 tasks
PERF: Break reference cycle for all Index types Index Related to the Index class or subclasses Performance Memory or execution speed performance
Performance of get_loc on non-unique MultiIndex MultiIndex Performance Memory or execution speed performance
#19464 by toobaz was closed Nov 1, 2018 Loading…
3 tasks done
PERF: Improve SeriesGroupBy.value_counts performances with categorical values. Groupby Performance Memory or execution speed performance Stale
#46940 by LucasG0 was closed Aug 1, 2022 Loading…
3 of 4 tasks
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: array_equivalent Performance Memory or execution speed performance Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#35256 by jbrockmendel was closed Jul 14, 2020 Loading…
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…
4 tasks done
Performance of maybe_box_datetimelike #30520 Performance Memory or execution speed performance
#30531 by ivan-vasilev was closed Jan 24, 2020 Loading…
2 of 5 tasks
PERF: statically define classes for is_dtype checks Dtype Conversions Unexpected or buggy dtype conversions Performance Memory or execution speed performance
#33364 by TomAugspurger was closed Jul 17, 2020 Loading…
PERF: removed coercion to int64 for arrays of ints in Categorical.from_codes Categorical Categorical Data Type Performance Memory or execution speed performance
CLN: avoid _internal_get_values in Categorical.__iter__ Categorical Categorical Data Type Clean Performance Memory or execution speed performance
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