pandas (original) (raw)

Tests added and passed if fixing a bug or adding a new feature
All code checks passed.
Added type annotations to new arguments/methods/functions.
Added an entry in the latest doc/source/whatsnew/v1.6.0.rst file if fixing a bug or adding a new feature.

Perf improvement in MultiIndex.argsort and MultiIndex.sort_values for the vast majority of cases (where MultiIndex.argsort is called without additional passthrough numpy parameters).

Also, an xfail was removed because np.lexsort does not complain about complex dtype arrays whereas np.argsort will complain about an object array of tuples containing complex and non-complex dtypes.

ASV added:

       before           after         ratio
     [fa211d47]       [b2fea756]
     <main>           <perf-multiindex-argsort>
-      81.0±0.9ms       27.9±0.7ms     0.34  multiindex_object.SortValues.time_sort_values('Int64')
-        96.9±2ms       2.00±0.2ms     0.02  multiindex_object.SortValues.time_sort_values('int64')