REF: simplify Series.__setitem__ #41912
Merged
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Motivating goal is to get rid of the Series methods that use
self.index._engine.get_loc
, as these are a mine field (xref #41846). The correct method would be to useself.index.get_loc
, the trouble being that we are inconsistent about what kinds of exceptions we raise in engine.get_loc vs Index.get_loc (and Index subclasses). This is a bite-size step towards this goal.