REV: Revert #40510 #40818
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REV: Revert #40510 #40818
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jreback
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Thanks @jbrockmendel ! I checked some of the benchmarks that were affected, and they improved again, see eg https://pandas.pydata.org/speed/pandas/#groupby.GroupByCythonAgg.time_frame_agg?python=3.8&Cython=0.29.21&jinja2=&p-method='mean' |
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@jorisvandenbossche reports that #40510 was performance-hurting, so this rolls it back until we can sort out why that is.