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PERF: Remove unnecessary copies in sorting functions (#33917) #34192

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Merged
merged 15 commits into from
Jun 3, 2020
Merged

PERF: Remove unnecessary copies in sorting functions (#33917) #34192

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PERF: Remove unnecessary copies in sorting functions
mproszewska May 15, 2020
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mproszewska May 16, 2020
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mproszewska May 16, 2020
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mproszewska May 22, 2020
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mproszewska May 22, 2020
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mproszewska May 22, 2020
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Merge branch 'perf'
mproszewska May 24, 2020
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mproszewska May 28, 2020
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Merge remote-tracking branch 'upstream/master'
mproszewska Jun 1, 2020
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mproszewska Jun 3, 2020
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2 changes: 1 addition & 1 deletion pandas/core/sorting.py
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Original file line number Diff line number Diff line change
Expand Up @@ -385,7 +385,7 @@ def ensure_key_mapped(values, key: Optional[Callable], levels=None):
from pandas.core.indexes.api import Index

if not key:
return values.copy()
return values

if isinstance(values, ABCMultiIndex):
return ensure_key_mapped_multiindex(values, key, level=levels)
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