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Pull requests: pandas-dev/pandas
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ENH: Reduce for loops in df.corr(method='kendall') Numeric Operations Arithmetic, Comparison, and Logical operations Performance Memory or execution speed performance
#11000 by pratapvardhan was closed Oct 18, 2015 Loading…
PERF: use .values in index difference Indexing Related to indexing on series/frames, not to indexes themselves Performance Memory or execution speed performance Period Period data type
#11279 by max-sixty was closed Jan 6, 2016 Loading…
PERF: period factorization Performance Memory or execution speed performance Period Period data type
#14348 by chris-b1 was closed Oct 13, 2016 Loading…
4 tasks done
WIP - Additional documentation for Performance Improvements using Pandas Docs Performance Memory or execution speed performance
#16439 by andymaheshw was closed Oct 28, 2017 Loading…
ENH: numexpr on boolean frames Enhancement Performance Memory or execution speed performance
#2925 by jreback was merged Mar 9, 2013 Loading…
PERF: Improved performance for StringMethods.encode/decode Performance Memory or execution speed performance Strings String extension data type and string data
#12989 by Winand was closed Apr 27, 2016 Loading…
astype checks notnull Fixes: #8732 Performance Memory or execution speed performance Strings String extension data type and string data
#8924 by vikram was closed Nov 29, 2014 Loading…
PERF: upgrade khash lib to 0.2.8 Performance Memory or execution speed performance
#8547 by immerrr was closed May 9, 2015 Loading…
1 of 5 tasks
improving df.to_csv performance IO CSV read_csv, to_csv Output-Formatting __repr__ of pandas objects, to_string Performance Memory or execution speed performance
#7147 by michaelaye was closed Jan 18, 2015 Loading…
BUG: declare and use self.unique_check API Design Performance Memory or execution speed performance
#9526 by toobaz was closed May 9, 2015 Loading…
PERF: astype(str) on object dtypes GH8732 Performance Memory or execution speed performance Strings String extension data type and string data
#8971 by vikram was closed May 9, 2015 Loading…
(WIP) ENH: Add PeriodBlock Enhancement Performance Memory or execution speed performance Period Period data type
#13755 by sinhrks was closed May 7, 2017 Loading…
2 of 4 tasks
ENH: Have inferred_freq set offset. Have freq always try to infer. Frequency DateOffsets Performance Memory or execution speed performance
#6637 by jseabold was closed Mar 14, 2014 Loading…
(WIP) PERF: improve .str perf for all-string values (about 2x-) Performance Memory or execution speed performance Strings String extension data type and string data
#10135 by sinhrks was closed May 14, 2015 Loading…
3 tasks
RangeIndex as default index API Design Indexing Related to indexing on series/frames, not to indexes themselves Performance Memory or execution speed performance
#9999 by ARF1 was closed May 2, 2015 Loading…
Introduction of RangeIndex API Design Indexing Related to indexing on series/frames, not to indexes themselves Performance Memory or execution speed performance
#9977 by ARF1 was closed Dec 30, 2015 Loading…
15 of 25 tasks
PERF: BlockPlacement.copy() speed-up Performance Memory or execution speed performance
#10073 by ARF1 was closed Aug 5, 2015 Loading…
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…
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…
PERF: __contains__ method for Categorical Categorical Categorical Data Type Performance Memory or execution speed performance
#21022 by fjetter was closed Jun 19, 2018 Loading…
4 tasks done
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…
PERF: avoid unnecessary recoding in CategoricalIndex._create_categorical Indexing Related to indexing on series/frames, not to indexes themselves Performance Memory or execution speed performance
#21506 by topper-123 was closed Jun 16, 2018 Loading…
3 of 4 tasks
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…
2 of 4 tasks
get_indexer_non_unique for orderable indexes Indexing Related to indexing on series/frames, not to indexes themselves Performance Memory or execution speed performance
#15372 by horta was closed Feb 21, 2017 Loading…
PERF: Make DateOffset (partially) immutable, cache _params for __eq__ speedup Enhancement Performance Memory or execution speed performance
#17137 by jbrockmendel was closed Aug 8, 2017 Loading…
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