REF: remove internal Block usage from FrameColumnApply #40166
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jorisvandenbossche
added
Refactor
jbrockmendel
reviewed
Mar 2, 2021
pandas/core/apply.py
Outdated
| @@ -896,7 +895,7 @@ def series_generator(self): | |||
| for (arr, name) in zip(values, self.index): | |||
| # GH#35462 re-pin mgr in case setitem changed it | |||
| ser._mgr = mgr | |||
| blk.values = arr | |||
| ser._mgr.set_values(arr) | |||
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small perf gain by using mgr instead of ser._mgr
jbrockmendel
reviewed
Mar 2, 2021
pandas/core/internals/managers.py
Outdated
| @@ -1646,6 +1646,15 @@ def fast_xs(self, loc): | |||
| """ | |||
| raise NotImplementedError("Use series._values[loc] instead") | |||
|
|
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| def set_values(self, values): | |||
|
small comments, otherwise LGTM |
jreback
approved these changes
Mar 2, 2021
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In the
applycode, there is still one case where we are directly using the internal blocks. This moves that to a method on the manager, so we don't have to interact directly with the blocks (which ideally we don't want outside of the internals, and let's ArrayManager cleanly support this as well).For the rest it still updates the Series' values in place, preserving the performance trick.
cc @jbrockmendel @rhshadrach