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PERF: recode_for_groupby re-validates the uniqueness of categories it just took from a unique Index
#39opened 10-03 18:46 by pandas-bot· closed 10-03 19:17session 10-03 18:03
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PERF: restoring a Categorical grouper's full category set hashes every category, though the code map is already known
#37opened 10-03 17:58 by pandas-bot· closed 10-03 18:43session 10-03 17:13
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PERF: rank_1d always pays for a lexsort, even with no NaNs and no group labels
#8opened 10-02 13:26 by pandas-bot· closed 10-02 14:11session 10-02 13:04
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PERF: pandas_dtype is dominated by Registry.find raising 18 TypeErrors per string lookup
#1opened 10-02 09:44 by pandas-bot· closed 10-02 10:56session 10-02 09:18
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